TEA6845H [NXP]
New In Car Entertainment NICE car radio; 新的车载娱乐NICE车载电台型号: | TEA6845H |
厂家: | NXP |
描述: | New In Car Entertainment NICE car radio |
文件: | 总48页 (文件大小:264K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
TEA6845AH; TEA6845H
New In Car Entertainment (NICE)
car radio
Product specification
2001 Apr 12
File under Integrated Circuits, IC01
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
CONTENTS
11
12
AC CHARACTERISTICS
I2C-BUS PROTOCOL
I2C-bus specification
Test mode
1
2
3
4
5
6
7
FEATURES
12.1
GENERAL DESCRIPTION
ORDERING INFORMATION
QUICK REFERENCE DATA
BLOCK DIAGRAM
12.1.1
12.1.2
12.1.3
12.1.4
12.2
12.2.1
12.2.2
12.2.3
12.2.4
12.2.5
12.2.6
12.2.7
12.2.8
Data transfer for the TEA6845
I2C-bus pull-up resistors
Frequency setting
I2C-bus protocol
PINNING
Data transfer mode and IC address
Write mode: data byte 1
Write mode: data byte 2
Write mode: data byte 3
Write mode: data byte 4
Write mode: data byte 5
Write mode: data byte 6
Read mode: data byte 1
FUNCTIONAL DESCRIPTION
7.1
Oscillators
7.1.1
7.1.2
7.1.3
7.2
7.2.1
7.2.2
7.2.3
7.2.4
7.2.5
7.3
7.3.1
7.3.2
7.3.3
7.3.4
7.3.5
7.3.6
7.4
VCO
Crystal oscillator
PLL
FM signal channel
DAA
FM I/Q mixer
FM keyed AGC
FM IF amplifiers
FM demodulator
AM signal channel
AM tuner including mixer 1 and mixer 2
AM RF AGC and IF2 AGC
AM detector
AM AF or IF2 switch
AM noise detector and blanker
FM and AM level detector
Test mode
13
TEST AND APPLICATION INFORMATION
PACKAGE OUTLINES
14
15
SOLDERING
15.1
Introduction to soldering surface mount
packages
Reflow soldering
Wave soldering
Manual soldering
15.2
15.3
15.4
15.5
Suitability of surface mount IC packages for
wave and reflow soldering methods
16
17
18
19
DATA SHEET STATUS
DEFINITIONS
8
LIMITING VALUES
9
THERMAL CHARACTERISTICS
DC CHARACTERISTICS
DISCLAIMERS
PURCHASE OF PHILIPS I2C COMPONENTS
10
2001 Apr 12
2
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
1
FEATURES
• FM mixer for conversion of FM RF from 65 to 108 MHz
to IF of 10.7 MHz; the mixer provides inherent image
rejection
• FM RF mixer can be set to receive weather band radio
up to 162.55 MHz; weather band radio flag output
• Level detector for AM and FM with temperature
compensated output voltage; starting point and slope of
level output is programmable via the I2C-bus
• AM mixer 1 for conversion of AM RF to AM IF1 of
10.7 MHz
• LC tuner oscillator providing mixer frequencies for
FM mixer and AM mixer 1
• AM RF PIN diode drive circuit; AGC threshold detection
at AM mixer 1 and IF2 AGC input; threshold is
programmable via the I2C-bus; AM IF2 AGC and
demodulator
• AM mixer 2 for conversion of AM IF1 to AM IF2 of
450 kHz
• AM AF output switchable to provide AM IF2 for
AM stereo decoder
• Crystal oscillator providing mixer frequencies for
AM mixer 2 and reference for synthesizer PLL, IF count,
timing for Radio Data System (RDS) update and
reference frequency for car audio signal processor ICs
• AM noise blanker with blanking at AM IF2
• Several test modes available for fast IC and system
• Fast synthesizer PLL tuning system with local control for
tests.
inaudible RDS updating
• Timing function for RDS update algorithm and control
signal output for car audio signal processor ICs
(TEA688x, SAA77xx) or car radio integrated signal
processor IC (TEF6890H)
2
GENERAL DESCRIPTION
The TEA6845 is a single IC with car radio tuner for
AM and FM intended for microcontroller tuning with the
I2C-bus. It provides the following functions:
• Digital auto alignment circuit for conversion of
LC oscillator tuning voltage to controlled alignment
voltage of FM antenna tank circuit
• AM double conversion receiver for LW, MW and SW
(31 m, 41 m and 49 m bands) with IF1 = 10.7 MHz and
IF2 = 450 kHz
• AGC PIN diode drive circuit for FM RF AGC; AGC
detection at FM mixer input; the AGC PIN diode drive
can be activated by the I2C-bus as a local or distance
function; AGC threshold is a programmable and keyed
function switchable via the I2C-bus
• FM single conversion receiver with integrated image
rejection for IF = 10.7 MHz capable of selecting US FM,
US weather, Europe FM, East Europe FM and Japan
FM bands.
• FM IF linear amplifiers with high dynamic input range
• FM quadrature demodulator with automatic centre
frequency adjustment and Total Harmonic Distortion
(THD) compensation
3
ORDERING INFORMATION
TYPE
PACKAGE
NUMBER
NAME
DESCRIPTION
VERSION
TEA6845AH
QFP64
QFP64
plastic quad flat package; 64 leads (lead length 1.95 mm);
body 14 × 20 × 2.8 mm
SOT319-5
TEA6845H
plastic quad flat package; 64 leads (lead length 1.95 mm);
SOT319-2
body 14 × 20 × 2.8 mm
2001 Apr 12
3
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
4
QUICK REFERENCE DATA
SYMBOL
VDDA(n)
PARAMETER
CONDITIONS
MIN.
TYP.
8.5
MAX.
UNIT
analog supply voltage 1, 3, 4, 5
and 6
8
9
V
IDDA(tot)
total analog supply current 1, 3, 4, FM mode
45
56
49
5
67
mA
mA
V
5 and 6
AM mode
39
59
VDDA2
IDDA2
analog supply voltage 2
4.75
6.5
5.25
9.8
analog supply current 2
FM mode
AM mode
8.1
5.9
5
mA
mA
V
4.7
7.1
VDDD
IDDD
digital supply voltage
digital supply current
4.75
18
5.25
28
FM mode
AM mode
LW
23
23
−
mA
mA
MHz
MHz
MHz
MHz
18
28
fAM(ant)
AM input frequency
0.144
0.522
5.85
65
0.288
1.710
9.99
108
MW
−
SW
−
fFM(ant)
FM input frequency
−
fFM(WB)(ant)
Tamb
FM weather band input frequency
ambient temperature
162.4
−40
−
162.55 MHz
−
+85
°C
AM overall system parameters (1 × SFE10.7MS3; 1 × SFR450H)
(S+N)/N
THD
signal plus noise-to-noise ratio
total harmonic distortion
m = 0.3
m = 0.8
m = 0.9
−
−
−
58
−
−
−
dB
%
0.3
0.5
%
FM overall system parameters (3 × SFE10.7MS3)
(S+N)/N
signal plus noise-to-noise ratio
∆f = 22.5 kHz;
de-emphasis = 50 µs
−
−
65
−
dB
%
THD
total harmonic distortion
∆f = 75 kHz
0.6
1
2001 Apr 12
4
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V
DGND
39
OSCFDB
AFHOLD
AMAFIF2
RDSMPX FMMPX
DDA3
f
V
V
V
V
V
ref
37
tune
DDA4
DDD
DAAIN
33
CPOUT
35
VCOGND OSCTNK
AFSAMPLE TRDSMUTE
DDA2 DDA1
34
36
38
40 41 42
43
44
45
46
47
48
49
50
51
32
31
SEQUENTIAL
CIRCUIT FOR
RDS UPDATING
DAATD
AM
DETECTOR
POWER
SUPPLY
VCO
MUTE
ANTENNA
DAA
DAAOUT
TUNING SYSTEM
AM
2 ms/20 ms
10.25 MHz
52
53
FM IF
AM IF2
2
SDA
SCL
I C-bus
IF
COUNT
2
I C-BUS
30
29
28
T1FMAGC
T2FMAGC
IFMAGC
FM
AGC
54
55
IF2GND
QDET1
WX
N1
TEA6845AH
TEA6845H
27
26
25
FMMIXIN2
AM
IF AGC
LEVEL
DAA
×
DEMODULATOR
56
57
RFGND
FM
÷2
90°
QDET2
I/Q MIXER
FMMIXIN1
C
AFC
24
AM-NOISE
DETECTOR
PEAK/
AVERAGE
AM
LEVEL
BLANK
PULSE
V
90°
Σ
ref(FMMIX)
58
V
level
59
60
61
XTAL1
23
22
21
FM
LIMITER/
LEVEL
IAMAGC
T2AMAGC
T1AMAGC
CRYSTAL
OSCILLATOR
×
AM
MIXER2
XTALGND
XTAL2
N2
AM
RF AGC
÷5/10
62
I
ref
IFAMP1
IFAMP2
×
20
AMMIX1IN1
AM
63
64
MIXER 1
AMMIX2OUT1
AMMIX2OUT2
19
18
17 16
15 14
13
12
11
10
9
8
7
6
5
4
3
2
1
MGU350
C
C
AGC
AMMIX1IN2
V
MIX1OUT2
IFAMP1DEC
IFAMP1IN
IFAMP1OUT
IFAMP2DEC
IF1GND
FMLIMIN
offset
V
MIX1OUT1
IFAMP2IN
AMIF2IN
AMIF2DEC
FMLIMDEC
DDA5
DDA6
AMNBHOLD
IFAMP2OUT
Fig.1 Block diagram.
ahdnbok,uflapegwidt
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
6
PINNING
SYMBOL
PIN
DESCRIPTION
CAGC
1
AMIFAGC capacitor
FMLIMDEC
FMLIMIN
AMIF2DEC
IFAMP2OUT
AMNBHOLD
AMIF2IN
IF1GND
2
FM limiter decoupling
3
FM limiter input (10.7 MHz)
decoupling for AM IF2 input
IF amplifier 2 output (10.7 MHz)
AM noise blanker hold output
4
5
6
7
AM IF2 input (450 kHz) for demodulator AGC and AM level detector
AM IF1 ground
8
IFAMP2IN
Coffset
9
IF amplifier 2 input (10.7 MHz)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
DC feedback for offset compensation RDS mute
IF amplifier 2 decoupling and AGC capacitor for AM noise blanker
IF amplifier 1 output (10.7 MHz)
IFAMP2DEC
IFAMP1OUT
IFAMP1IN
VDDA6
IF amplifier 1 and AM mixer 2 input (10.7 MHz)
analog supply voltage 6 (8.5 V) for IF amplifier 1 and 2
AM mixer 2 and FM IF amplifier 1 decoupling
FM mixer and AM mixer 1 IF output high (10.7 MHz)
FM mixer and AM mixer 1 IF output low (10.7 MHz)
analog supply voltage 5 (8.5 V) for FM mixer and AM mixer 1
AM mixer 1 input 2
IFAMP1DEC
MIX1OUT1
MIX1OUT2
VDDA5
AMMIX1IN2
AMMIX1IN1
T1AMAGC
T2AMAGC
IAMAGC
Vref(FMMIX)
FMMIXIN1
RFGND
AM mixer 1 input 1
1st time constant output of AM front-end AGC
2nd time constant of AM front-end AGC
PIN diode drive current output of AM front-end AGC
reference voltage for FM mixer
input 1 of FM RF mixer
RF ground
FMMIXIN2
IFMAGC
T2FMAGC
T1FMAGC
DAAOUT
DAATD
input 2 of FM RF mixer
PIN diode drive current output of FM front-end AGC
2nd time constant of FM front-end AGC
1st time constant of FM front-end AGC
output of digital alignment circuit for antenna tank circuit
temperature compensation diode of digital auto alignment circuit for antenna tank circuit
input of digital auto alignment circuit for antenna tank circuit
tuning voltage
DAAIN
Vtune
CPOUT
charge pump output
VDDA4
analog supply voltage 4 (8.5 V) for tuning PLL
reference frequency output for signal processor IC
digital supply voltage (5 V)
fref
VDDD
DGND
digital ground
VCOGND
VCO ground
2001 Apr 12
6
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
OSCFDB
PIN
DESCRIPTION
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
VCO feedback
OSCTNK
VDDA3
VCO tank circuit
analog supply voltage 3 (8.5 V) for VCO
AFSAMPLE
AFHOLD
TRDSMUTE
AMAFIF2
RDSMPX
FMMPX
VDDA2
AF sample flag output for car audio signal processor IC
AF hold flag output for car audio signal processor IC
time constant for RDS update mute
AM demodulator AF output or IF2 output for AM stereo (multiplexed by I2C-bus)
MPX output for RDS decoder and signal processor (not muted)
FM demodulator MPX output
analog supply voltage 2 (5 V) for on-chip power supply
analog supply voltage 1 (8.5 V) for on-chip power supply
I2C-bus data line input and output
VDDA1
SDA
SCL
I2C-bus clock line input
IF2GND
QDET1
QDET2
CAFC
AM IF2 ground
quadrature demodulator tank 1
quadrature demodulator tank 2
FM demodulator AFC capacitor
Vlevel
level voltage output for AM and FM
crystal oscillator 1
XTAL1
XTALGND
XTAL2
crystal oscillator ground
crystal oscillator 2
Iref
reference current for power supply
AM mixer 2 output 1 (450 kHz)
AMMIX2OUT1
AMMIX2OUT2
AM mixer 2 output 2 (450 kHz)
2001 Apr 12
7
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
C
V
V
1
2
51
50
AGC
DDA1
DDA2
FMLIMDEC
FMLIMIN
3
49 FMMPX
AMIF2DEC
IFAMP2OUT
AMNBHOLD
AMIF2IN
4
48 RDSMPX
47 AMAFIF2
46 TRDSMUTE
45 AFHOLD
5
6
7
IF1GND
8
44 AFSAMPLE
V
43
IFAMP2IN
9
DDA3
TEA6845AH
TEA6845H
C
10
42 OSCTNK
OSCFDB
offset
IFAMP2DEC 11
IFAMP1OUT 12
IFAMP1IN 13
41
40 VCOGND
39 DGND
V
V
f
14
38
37
36
DDA6
DDD
IFAMP1DEC 15
MIX1OUT1 16
MIX1OUT2 17
ref
V
DDA4
35 CPOUT
V
V
tune
18
34
DDA5
AMMIX1IN2 19
33 DAAIN
MHB877
Fig.2 Pin configuration.
2001 Apr 12
8
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
7
FUNCTIONAL DESCRIPTION
Oscillators
It includes an AGC PIN diode drive circuit for the FM RF
AGC. The PIN diode drive can be activated via the I2C-bus
as a local or distance function.
7.1
7.1.1
VCO
The AGC threshold is programmable and the keyed AGC
function is switchable via the I2C-bus.
The L and C tuned VCO provides the local oscillator signal
for both FM and AM mixer 1. It has a frequency range of
151.2 to 248.2 MHz.
7.2.4
FM IF AMPLIFIERS
The two FM IF amplifiers provide 10 dB and 4 dB
amplification with high linearity and dynamic range.
7.1.2
CRYSTAL OSCILLATOR
The crystal oscillator provides a 20.5 MHz signal that is
used for:
7.2.5
FM DEMODULATOR
• Reference frequency for frequency synthesizer PLL
• Local oscillator for AM mixer 2
The FM quadrature demodulator includes automatic
centre frequency adjustment and THD compensation.
• Reference frequency for the IF counter
• Timing signal for the RDS update algorithm
7.3
AM signal channel
7.3.1
AM TUNER INCLUDING MIXER 1 AND MIXER 2
• Reference frequency (75.4 kHz) for the TEA6880H (car
audio signal processor - CASP) or TEF6890H (car radio
integrated signal processor).
The AM tuner is realized in a double conversion technique
and is capable of selecting LW, MW and SW bands.
AM mixer 1 converts AM RF to IF1 of 10.7 MHz, while
AM mixer 2 converts IF1 of 10.7 MHz to IF2 of 450 kHz:
7.1.3
PLL
Fast synthesizer PLL tuning system with local control for
inaudible RDS updating.
• LW = 144 to 288 kHz
• MW = 530 to 1710 kHz (US AM band)
• SW = 5.85 to 9.99 MHz (including the 31 m, 41 m and
7.2
FM signal channel
49 m bands).
7.2.1
DAA
7.3.2
AM RF AGC AND IF2 AGC
FM RF Digital Auto Alignment (DAA) circuitry for the
conversion of the VCO tuning voltage to a controlled
alignment voltage for the FM antenna tank circuit.
The AM RF includes a PIN diode drive circuit. The
threshold detection points for AM AGC are performed at
AM mixer 1 and AM IF2. AGC thresholds are
programmable via the I2C-bus.
7.2.2
FM I/Q MIXER
FM quadrature mixer converts FM RF (65 to 162.55 MHz)
to IF of 10.7 MHz. The FM mixer provides inherent image
rejection and high RF sensitivity.
7.3.3
AM DETECTOR
The AM detector provides AM level information and
AM AF or AM IF2.
It is capable of tuning the US FM, US weather,
Europe FM, Japan FM and East Europe FM bands:
7.3.4
AM AF OR IF2 SWITCH
• US FM = 87.9 to 107.9 MHz
The AM output provides either a detected AM AF or the
corresponding AM IF2 signal. The IF2 signal can be used
for AM stereo decoder processing.
• US weather FM = 162.4 to 162.55 MHz
• Europe FM = 87.5 to 108 MHz
• Japan FM = 76.0 to 91 MHz
• East Europe FM = 65.8 to 74 MHz.
7.2.3
FM KEYED AGC
FM contains keyed wide-band RF AGC. AGC detection
occurs at the FM mixer. The wide-band RF signal switches
a narrow band signal (IF) from the FM IF level detector
circuitry that controls the FM RF AGC block.
2001 Apr 12
9
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
7.3.5
AM NOISE DETECTOR AND BLANKER
If the test mode is enabled by pin fref:
• The settling time of the AM IF2 AGC is reduced to less
than 100 ms in the nominal application
The detection point for the AM noise blanker is the output
stage of AM mixer 1, while blanking is realized at the
output of the mixer 2.
• The digital-to-analog converters for the antenna DAA
and the level DAA can be clocked directly by the SCL
line of the I2C-bus
• The output at pin fref can be selected by the I2C-bus:
TEA6880H or TEF6890H reference frequency, PLL
reference frequency or PLL programmable divider
output frequency
Trigger sensitivity can be modified by changing the resistor
value at pin AMNBHOLD.
7.3.6
FM AND AM LEVEL DETECTOR
FM and AM level detectors provide the temperature
compensated output voltage. The starting points and
slopes of the level detector outputs are programmable via
the I2C-bus.
• The RDS update control circuit can be clocked directly
via pin DAATD
• Pin T1AMAGC can be used to enable the load PLL
7.4
Test mode
circuit of the RDS update control circuit
• Charge pumps can be set into 3-state mode.
The test mode of the IC is activated by:
• Sending the test byte (byte 5) to the IC
• Connecting pin fref through a 100 kΩ resistor to VDDA1
• Applying 50 µA to pin fref.
8
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOL
VDDA1
VDDA2
VDDA3
VDDA4
VDDA5
VDDA6
VDDD
PARAMETER
CONDITIONS
MIN.
−0.3
MAX.
+10
UNIT
analog supply voltage 1 for on-chip power supply
analog supply voltage 2 for on-chip power supply
analog supply voltage 3 for VCO
V
V
V
V
V
V
V
V
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
−0.3
+6.5
+10
+10
+10
+10
+6.5
−
analog supply voltage 4 for tuning PLL
analog supply voltage 5 for FM and AM RF
analog supply voltage 6 for IF amplifier 1 and 2
digital supply voltage
∆VDD8.5-DD5 difference between any 8.5 V supply voltage and any note 1
5 V supply voltage
Tstg
Tamb
Ves
storage temperature
−55
+150
+85
°C
°C
V
ambient temperature
−40
electrostatic handling voltage
note 2
note 3
−200
−2000
+200
+2000
V
Notes
1. To avoid damages and wrong operation it is necessary to keep all 8.5 V supply voltages at a higher level than any
5 V supply voltage. This is also necessary during power-on and power-down sequences. Precautions have to be
provided in such a way that interferences can not pull down the 8.5 V supply below the 5 V supply.
2. Machine model (R = 0 Ω, C = 200 pF).
3. Human body model (R = 1.5 kΩ, C = 100 pF).
2001 Apr 12
10
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
9
THERMAL CHARACTERISTICS
SYMBOL
Rth(j-a)
PARAMETER
CONDITIONS
VALUE
UNIT
thermal resistance from junction to ambient
in free air
TEA6845AH
TEA6845H
46
48
K/W
K/W
10 DC CHARACTERISTICS
VDDA1 = VDDA3 = VDDA4 = VDDA5 = VDDA6 = 8.5 V; VDDA2 = 5 V; VDDD = 5 V; Tamb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply voltage
VDDA(n)
VDDA2
VDDD
analog supply voltage 1, 3, 4, 5 and 6
analog supply voltage 2
8
8.5
9
V
4.75
4.75
5
5
5.25
5.25
V
V
digital supply voltage
Supply current in FM mode
IDDD
digital supply current
18
23
15
28
mA
mA
IDDA1
analog supply current 1 for on-chip power
supply
−
−
IDDA2
analog supply current 2 for on-chip power
supply
6.5
8.1
9.8
mA
IDDA3
IDDA4
analog supply current 3 for VCO
−
−
6.5
2.9
−
−
mA
mA
analog supply current 4 for tuning PLL
test mode;
bit TMS3 = 1
IDDA5
IDDA6
analog supply current 5 for FM RF
−
5
−
mA
mA
analog supply current 6 for FM IF
amplifier 1 and 2
10
12
14
IMIX1OUT1
IMIX1OUT2
bias current of FM mixer output 1
bias current of FM mixer output 2
4.8
4.8
6
6
7.2
7.2
mA
mA
Supply current in AM mode
IDDD
digital supply current
18
23
28
mA
mA
IDDA1
analog supply current 1 for on-chip power
supply
−
17.5
−
IDDA2
analog supply current 2 for on-chip power
supply
4.7
5.9
7.1
mA
IDDA3
IDDA4
analog supply current 3 for VCO
−
−
6.5
1.6
−
−
mA
mA
analog supply current 4 for tuning PLL
test mode;
bit TMS3 = 1
IDDA5
analog supply current 5 for RF
−
1.8
6
−
mA
mA
mA
mA
mA
IMIX1OUT1
IMIX1OUT2
bias current of AM mixer 1 output 1
bias current of AM mixer 1 output 2
4.8
4.8
3.6
3.6
7.2
7.2
5.4
5.4
6
IAMMIX2OUT1 bias current of AM mixer 2 output 1
IAMMIX2OUT2 bias current of AM mixer 2 output 2
4.5
4.5
2001 Apr 12
11
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
On-chip power supply reference current generator: pin Iref
Vo(ref)
Ro
output reference voltage
output resistance
4
8
4.25
4.5
V
11
13
kΩ
Io(max)
maximum output current
−100
−
+100
nA
11 AC CHARACTERISTICS
DDA1 = VDDA3 = VDDA4 = VDDA5 = VDDA6 = 8.5 V; VDDA2 = 5 V; VDDD = 5 V; Tamb = 25 °C; see Figs 9 and 10; unless
V
otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Voltage controlled oscillator
fosc
oscillator frequency
carrier-to-noise ratio
151.2
−
248.2
MHz
C/N
fosc = 200 MHz; ∆f = 10 kHz
−
101
−
dBc
-----------
Hz
RR
ripple rejection
fripple = 100 Hz;
VDDA3(ripple) = 100 mV (RMS)
fosc = 250 MHz
−
−
97
99
−
−
dB
dB
fosc = 200 MHz
FEEDBACK INPUT: PIN OSCFDB
Vi(bias)
input bias voltage
2.2
2.8
3.4
V
TANK CIRCUIT OUTPUT: PIN OSCTNK
VO
DC output voltage
5
6.1
1.5
7.2
V
V
Vo(rms)
AC output voltage
(RMS value)
fosc = 200 MHz
−
−
Crystal oscillator
fxtal
crystal frequency
20.4996
20.5
20.5004
500
MHz
Rxtal
crystal motional
resistance
start of operating
−
−
Ω
Cxtal
C/N
crystal shunt capacitance
carrier-to-noise ratio
−
−
−
18
pF
fxtal = 20.5 MHz (10.25 MHz);
∆f = 10 kHz
112
−
dBc
-----------
Hz
CIRCUIT INPUTS: PINS XTAL1, XTAL2 AND XTALGND
Vxtal(rms)
crystal voltage
(RMS value)
note 2
−
350
2.1
−
−
mV
V
VXTAL1
,
DC bias voltage
1.7
−500
8
2.5
−
VXTAL2
Ri
Ci
real part of input
impedance
VXTAL1 − VXTAL2 = 1 mV;
Ω
note 1
input capacitance
note 1
10
12
pF
2001 Apr 12
12
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
PARAMETER
CONDITIONS
start-up at
MIN.
TYP.
MAX.
UNIT
mA
IXTALGND
crystal oscillator circuit
current
−
−
9
−
−
VXTAL1 = VXTAL2 = 2.1 V
operating at
1.5
mA
VXTAL1 − VXTAL2 = ±400 mV
Oscillator divider N1
N1
oscillator divider ratio
FM mode:
standard, Europe and local
weather band (WX)
−
−
2
1
−
−
Oscillator divider N2
N2
oscillator divider ratio
AM mode
SW
−
−
10
5
−
−
LW and MW
Synthesizer
PROGRAMMABLE DIVIDER
Nprog
programmable divider
512
−
32767
ratio
∆Nstep
programmable divider step
size
−
1
−
REFERENCE FREQUENCY DIVIDER
Nref
crystal oscillator divider
ratio
fxtal = 20.5 MHz
fref = 100 kHz
fref = 50 kHz
fref = 25 kHz
fref = 20 kHz
fref = 10 kHz
−
−
−
−
−
205
−
−
−
−
−
410
820
1025
2050
CHARGE PUMP: PIN CPOUT
Isink(cp1)l
low charge pump 1 peak
sink current
FM weather band mode;
0.4 V < VCPOUT < 7.6 V
200
−400
0.7
300
−300
1
400
−200
1.3
µA
µA
mA
Isource(cp1)l
Isink(cp1)h
low charge pump 1 peak
source current
FM weather band mode;
0.4 V < VCPOUT < 7.6 V
high charge pump 1 peak AM stereo mode; N2 = 10
sink current
(LW and MW);
0.4 V < VCPOUT < 7.6 V
Isource(cp1)h
high charge pump 1 peak AM stereo mode; N2 = 10
−1.3
−1
−0.7
mA
source current
(LW and MW);
0.4 V < VCPOUT < 7.6 V
Isink(cp2)
charge pump 2 peak sink FM standard mode;
100
−160
−5
130
−130
−
160
−100
+5
µA
µA
nA
current
0.3 V < VCPOUT < 7.1 V
Isource(cp2)
charge pump 2 peak
source current
FM standard mode;
0.3 V < VCPOUT < 7.1 V
IZ(cp1), IZ(cp2) charge pump 1 or 2
current in 3-state
0 < VCPOUT < 8.5 V
2001 Apr 12
13
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
CHARGE PUMP: PIN Vtune
Isink(cp3)
Isource(cp3)
IZ(cp3)
charge pump 3 peak sink FM standard mode;
2.1
3
3.9
mA
current
0.4 V < Vtune < 7.6 V
charge pump 3 peak
source current
FM standard mode;
0.4 V < Vtune < 7.6 V
−3.9
−5
−3
−
−2.1
mA
nA
charge pump 3 current in 0 < Vtune < 8.5 V
3-state
+5
Antenna Digital Auto Alignment (DAA)
DAA INPUT: PIN DAAIN
Ibias(cp)
charge pump buffer input FM mode;
−10
−10
0
−
−
−
+10
+10
8.5
nA
nA
V
bias current
0.4 V < VDAAIN < 8.0 V
AM mode;
0 V < VDAAIN < 8.5 V
Vi(cp)
charge pump buffer input
voltage
DAA OUTPUT: PIN DAAOUT; note 2
Vo(AM)
DAA output voltage in
AM mode
−
−
0.3
V
Vo(FM)
DAA output voltage in
FM mode
VDAAIN = 4.0 V;
VDAATD = 0.7 V
minimum value
−
−
0.5
1.8
4.2
V
V
V
bits DAA[6:0] set to logic 0 1.5
1.65
4
value: data
3.8
byte 3 = 10101011
maximum value;
bits DAA[6:0] set to logic 1
8
−
8.5
6.8
V
V
VDAAIN = 3.0 V;
6.2
6.5
VDAATD = 0.7 V; bits DAA[6:0]
set to logic 1
VDAAIN = 2 V
data byte 3 = 11010101
data byte 3 = 10101010
3
3.3
2
3.6
2.2
100
V
1.8
−
V
Vo(n)
DAA output noise voltage FM mode; VDAAIN = 4 V;
data byte 3: bit 6 = 1,
30
µV
bits 5 to 0 = 0;
B = 300 Hz to 15 kHz
∆Vo (T)
DAA output voltage
variation with temperature data byte 3 = 10101011;
VDAATD = 0.7 V
Tamb = −40 to +85 °C;
−8
−
+8
mV
mV
∆Vo (step)
DAA step accuracy
FM mode; VDAAOUT < 8.0 V;
n = 0 to 127
0.5VLSB
VLSB
1.5VLSB
Io(sink)
DAA output sink current
0.2 V < VDAAOUT < 8.25 V
50
−
−
−
µA
µA
Io(source)
DAA output source current
−
−50
2001 Apr 12
14
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
tst
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
µs
DAA output settling time
0.2 V < VDAAOUT < 8.25 V;
CL = 270 pF
−
−
30
RR
CL
ripple rejection
fripple = 100 Hz; VDDA4 = 1 mV
VDAAOUT < 8.0 V; FM mode
−
−
50
−
dB
pF
DAA output load
capacitance
−
270
DAA TEMPERATURE COMPENSATION: PIN DAATD
Isource
compensation diode
source current
0.2 V < VDAATD < 1.5 V
−50
−40
−30
µA
TCsource
temperature coefficient of 0.2 V < VDAATD < 1.5 V;
−3 × 10−10
−
+3 × 10−10 K−1
compensation diode
source current
Tamb = −40 to +85 °C
IF counter (FM IF or AM IF2 counter)
NIF
IF counter length for
AM and FM
−
8
−
bit
Tcount(IF)
IF counter period
data byte 4: bit 7 = 1
data byte 4: bit 7 = 0
data byte 4: bit 3 = 1
data byte 4: bit 3 = 0
−
−
−
−
2
−
−
−
−
ms
ms
20
10
100
Rprecount
FM IF counter prescaler
ratio
Reference frequency for car sound processor IC; note 3
REFERENCE FREQUENCY DIVIDER
Nref
crystal oscillator divider
ratio
−
−
272
−
−
fref
reference frequency
fxtal = 20.5 MHz
75.368
kHz
mV
VOLTAGE GENERATOR; PIN fref
Vo(p-p)
AC output voltage
60
100
170
(peak-to-peak value)
VO
DC output voltage
3.2
−
3.4
−
3.9
50
−
V
Ro
output resistance
kΩ
MΩ
RL(min)
minimum load resistance
1
−
AM signal channel
AM RF AGC STAGE INPUTS: PINS AMMIX1IN1 AND AMMIX1IN2
Vi(p)
RF input voltage for AGC data byte 5: bit 5 = 0, bit 6 = 0
−
−
−
−
150
275
400
525
−
−
−
−
mV
mV
mV
mV
start level (peak value)
data byte 5: bit 5 = 1, bit 6 = 0
data byte 5: bit 5 = 0, bit 6 = 1
data byte 5: bit 5 = 1, bit 6 = 1
AM IF AGC STAGE INPUTS: PINS AMIF2IN AND AMIF2DEC
Vi(p)
IF2 input voltage (peak
value)
AGC start level
0.20
0.27
15
0.35
V
AM RF AGC CURRENT GENERATOR OUTPUT: PIN IAMAGC
Isink(max)
maximum AGC sink
current
VAMMIX1IN1 > 500 mV
(peak value)
−
−
mA
2001 Apr 12
15
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
Ro
Co
PARAMETER
CONDITIONS
IIAMAGC = 1 µA
MIN.
TYP.
MAX.
UNIT
output resistance
1
−
−
MΩ
output capacitance
−
5
7
pF
AM RF AGC PEAK DETECTOR: PIN T2AMAGC
Iatt
attack current AGC peak
detector
data byte 5: bit 5 = 1,
bit 6 = 1;
AM mixer 1 input Vi = 1 V;
VT2AMAGC−GND = 3 V;
VAMIF2IN−AMIF2DEC = 0 V
−
−
3.15
2.6
−
−
mA
Idec
decay current AGC peak
detector
data byte 5: bit 5 = 1,
bit 6 = 1;
µA
AM mixer 1 input Vi = 0 V;
VT2AMAGC−AMMIN1IN2 = 0.25 V;
VT2AMAGC−GND = 3 V;
VAMIF2IN−AMIF2DEC = 0 V
AM MIXER 1 (IF1 = 10.7 MHZ)
Mixer inputs: pins AMMIX1IN1and AMMIX1IN2
Ri
input resistance
input capacitance
DC input voltage
note 4
note 4
50
70
5
100
7
kΩ
pF
V
Ci
−
VI
2.3
2.7
−
3.1
−
Vi(max)
maximum voltage on
pin AMMIX1IN1
1 dB compression point of
AM mixer 1 output
(peak-to-peak)
500
mV
Mixer outputs: pins MIX1OUT1 and MIXOUT2
Ro
output resistance
note 5
note 5
100
−
−
−
7
−
kΩ
pF
V
Co
output capacitance
5
Vo(max)(p-p)
maximum output voltage
(peak-to-peak value)
12
15
Ibias
mixer bias current
AM mode
4.8
2.0
6
7.2
3.2
mA
Mixer
gm(conv)
conversion
transconductance
2.55
mA
--------
V
IMIXOUT1
---------------------------------------------------
VFMMIXIN1 – FMMIXIN2
gm(conv)(T)
conversion
−
−9 × 10−4
−
K−1
transconductance
variation with temperature
∆gm(conv)
--------------------------------
g
m(conv) × ∆T
IP3
IP2
3rd-order intermodulation RL = 2.8 kΩ (AC load between 135
138
170
−
−
dBµV
dBµV
output pins)
2nd-order intermodulation RL = 2.8 kΩ (AC load between
−
output pins)
2001 Apr 12
16
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
5.8
MAX.
UNIT
Vi(n)(eq)
equivalent input noise
voltage
band limited noise;
Rgen = 750 Ω; RL = 2.8 kΩ
(AC load between output pins)
−
−
−
nV
-----------
Hz
F
noise figure of AM mixer 1
4.5
7.1
dB
WEATHER BAND FLAG: PIN T1AMAGC
IL(max)
maximum load current
−5
−
−
+5
µA
Vo(max)
maximum output voltage
for FM mode
measured with respect to
pin RFGND
0
0.5
V
Vo(min)
minimum output voltage
for WX mode
measured with respect to
pin RFGND
5.1
6.0
6.9
V
AM MIXER 2 (IF2 = 450 KHZ)
Mixer inputs: pins IFAMP1IN and IFAMP1DEC
Ri
input resistance
input capacitance
DC voltage
note 6
note 6
270
−
330
5
390
7
Ω
pF
V
Ci
VI
2.4
1.1
2.7
−
3
Vi(max)(p)
maximum input voltage
(peak value)
1 dB compression point of
AM mixer 2 output
(peak-to-peak)
−
V
Mixer outputs: pins AMMIX2OUT1 and AMMIXOUT2
R0
output resistance
note 7
100
−
−
−
7
−
kΩ
pF
V
Co
output capacitance
note 7
5
Vo(max)(p-p)
maximum output voltage
(peak-to-peak value)
VDDA = 8.5 V
12
15
Ibias
mixer bias current
AM mode
3.6
1.3
4.5
1.6
5.4
1.9
mA
Mixer
gm(conv)
conversion
transconductance
mA
--------
V
IAMMIX2OUT1
------------------------------
VIFAMP1IN
gm(conv)(T)
conversion
−
−9 × 10−4
−
K−1
transconductance
variation with temperature
∆gm(conv)
--------------------------------
g
m(conv) × ∆T
IP3
3rd-order intermodulation RL = 4 kΩ (AC load between
134
−
137
170
15
−
dBµV
dBµV
output pins)
IP2
2nd-order intermodulation RL = 4 kΩ (AC load between
−
output pins)
Vi(n)(eq)
equivalent input noise
voltage
Rgen = 330 Ω; RL = 4 kΩ
(AC load between output pins)
−
22
nV
-----------
Hz
F
noise figure of AM mixer 2
−
16
19.5
dB
2001 Apr 12
17
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
AM IF2 AGC STAGE: PINS AMIF2IN AND AMIF2DEC; note 8
Vi
input voltage
for α = −10 dB audio
attenuation
AM soft mute on
AM soft mute off
−
−
−
1
75
6
120
µV
10
30
−
µV
µV
V
VAGC(start)
VAGC(stop)
VAGC(ctrl)
∆AGC
AGC start voltage
AGC stop voltage
AGC control voltage
AGC range
input carrier voltage
maximum input peak voltage
Vi = 1 mV
14
−
4.1
4.3
89
4.7
−
V
between start and stop of
AGC; m = 0.8
−
dB
Ri
Ci
input resistance
1.8
2
2.2
5
kΩ
input capacitance
−
−
pF
AM DETECTOR
Vsens(rms)
sensitivity voltage
(RMS value)
m = 0.3; fmod = 400 Hz;
BAF = 2.5 kHz; Rgen = 2 kΩ;
note 8
(S+N)/N = 26 dB
(S+N)/N = 46 dB
−
45
65
900
−
µV
µV
dB
−
600
60
(S+N)/N
THD
maximum signal plus
noise-to-noise ratio
m = 0.3; fmod = 400 Hz;
54
BAF = 2.5 kHz; Rgen = 2 kΩ
total harmonic distortion
BAF = 2.5 kHz; CAGC = 22 µF;
AM IF2 AGC input
Vi = 100 µV to 500 mV (RMS)
m = 0.8; fmod = 400 Hz
m = 0.9; fmod = 400 Hz
m = 0.8; fmod = 100 Hz
m = 0.9; fmod = 100 Hz
−
−
−
−
0.5
1
1
%
%
%
%
dB
2
1.25
1.75
40
2.5
3.5
−
RR
ripple rejection
VDDA2(ripple) = 100 mV (RMS); 30
fripple = 100 Hz;
tsw
FM to AM switching time
AM AGC settling time
CAGC = 22 µF
CAGC = 22 µF
normal operation
test mode
−
1000
1500
ms
tsettle
−
−
−
−
1800
180
ms
ms
Output: pin AMAFIF2
Vo(rms)
AM IF2 output voltage
AM stereo; m = 0
(RMS value)
minimum at Vi = 14 µV
maximum at Vi = 5.0 mV
1.5
3
4.5
mV
mV
mV
130
240
180
290
230
340
AM mono; m = 0.3;
fmod = 400 Hz;
Vi = 100 µV to 500 mV (RMS)
Ro
output resistance
AM stereo
AM mono
−
−
−
−
500
500
Ω
Ω
2001 Apr 12
18
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
Co
PARAMETER
CONDITIONS
AM mono
MIN.
TYP.
MAX.
UNIT
pF
output capacitance
−
5
7
7
AM IF2 LEVEL DETECTOR OUTPUT: PIN Vlevel; see Fig.3
Vlevel
DC output voltage
Vi = 10 µV to 1 V
0
−
V
V
Vi < 1 µV; standard setting of 0.1
level DAA and level slope
0.5
2.2
40
0.9
2.8
50
Vi = 1.4 mV; standard setting 1.6
of level DAA
V
∆Vlevel
step size for adjustment of standard setting of level slope 30
level starting point
mV
Vlevel(slope)
slope of level voltage
standard setting of level slope 650
800
950
mV
---------------
20 dB
∆Vstep
step size for adjustment of Vi =1.4 mV
level starting point
45
60
75
mV
---------------
20 dB
Blevel
bandwidth of level output
voltage
200
300
−
mV
Ro
output resistance
−
−
−
500
Ω
RR
ripple rejection
VDDA1(ripple) = 100 mV (RMS);
40
−
dB
fripple = 100 Hz;
AM NOISE BLANKER; see Fig.4
Threshold: pin AMNBHOLD
VO
DC output voltage
suppression time
4.3
6
4.6
5.1
10
−
V
tsup
7.5
µs
Hz
ftrigger
trigger sensitivity
frequency
Vp = 200 mV (peak);
Vlevel < 1.8 V
−
1000
Vp = 200 mV (peak);
Vlevel > 2.2 V
−
−
−
−
100
100
Hz
Hz
Vp = 20 mV (peak)
Noise detector output: pin TRDSMUTE
Isink(AGC)
AM noise blanker AGC
sink current
VTRDSMUTE = 3 V
35
50
65
µA
VAGC
AM noise blanker AGC
voltage
AM mixer 1 input Vi = 0 V
1.9
2.2
2.5
V
FM signal channel
FM RF AGC
Inputs: pins FMMIXIN1 and FMMIXIN2; note 9
Vi(RF)(rms)
RF input voltage for start
of wide-band AGC
(RMS value)
data byte 5: bit 5 = 0, bit 6 = 0
data byte 5: bit 5 = 1, bit 6 = 0
data byte 5: bit 5 = 0, bit 6 = 1
data byte 5: bit 5 = 1, bit 6 = 1
−
−
−
−
4
−
−
−
−
mV
mV
mV
mV
8
12
16
2001 Apr 12
19
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
AGC peak detector output: pin T1FMAGC
Ich
charge current
−350
−600
−850
µA
Idis
discharge current
15
25
35
µA
PIN diode drive output: pin IFMAGC
Idrive drive current
Level voltage output: pin Vlevel
Vo = 0.5 to 4.0 V
8
11.5
950
15
mA
mV
Vth
threshold voltage for
narrow-band AGC
data byte 5: bit 7 = 1;
standard setting of level DAA
500
1400
FM RF MIXER
Reference voltage: pin Vref(FMMIX)
Vref reference voltage
FM mode
AM mode
6.5
2.7
7.1
3.1
7.9
3.4
V
V
Inputs: pins FMMIXIN1 and FMMIXIN2; note 9
Vi(RF)(max)
maximum RF input
voltage
1 dB compression point of
FM mixer output voltage
(peak-to-peak value)
70
100
2.6
−
mV
Vi(n)(eq)
equivalent input noise
voltage
Rgen = 600 Ω; RL = 2.8 kΩ;
noise of Rgen not included
−
3.1
nV
-----------
Hz
Ri
Ci
input resistance
−
−
1.4
5
−
kΩ
input capacitance
7
pF
Outputs: pins MIX1OUT1 and MIX1OUT2; note 5
Ro
output resistance
output capacitance
mixer bias current
100
−
−
5
6
−
−
kΩ
pF
mA
V
Co
7
Ibias
FM mode
4.8
3
7.2
−
Vo(max)(p-p)
maximum output voltage
(peak-to-peak value)
FM mixer
gm(conv)
conversion
transconductance
8.5
12.5
18
mA
--------
V
gm(conv)(T)
conversion
−
−1 × 10−3
−
K−1
transconductance
variation with temperature
F
noise figure
−
3
4.6
−
dB
IP3
IRR
3rd-order intermodulation
image rejection ratio
116
25
119
30
dBµV
dB
−
IF AMPLIFIER 1
G
gain
RL = 330 Ω; Vi = 1 mV;
13.5
15.5
17.5
dB
note 10
F
noise figure
−
10
13
dB
IP3
3rd-order intermodulation
117
120
−
dBµV
2001 Apr 12
20
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Inputs: pins IFAMP1IN and IFAMP1DEC; note 10
Vi(max)(p)
maximum input voltage
(peak value)
1 dB compression point of
IF amplifier 1 output voltage
(peak value)
200
−
−
mV
Vi(n)(eq)
equivalent input noise
voltage
Rgen = 330 Ω; RL = 330 Ω;
noise of Rgen not included
−
8
10
nV
-----------
Hz
Ri
Ci
input resistance
270
330
5
390
7
Ω
input capacitance
−
pF
Output: pin IFAMP1OUT
Ro
output resistance
270
−
330
5
390
7
Ω
Co
output capacitance
pF
V
Vo(max)(p)
maximum output voltage
(peak value)
1.2
1.5
−
IF AMPLIFIER 2
G
gain
RL = 330 Ω; Vi = 1 mV;
6.5
8.5
10.5
dB
note 11
F
noise figure
−
13
15
dB
IP3
3rd-order intermodulation
127
130
−
dBµV
Inputs: pins IFAMP2IN and IFAMP2DEC; note 11
Vi(max)(p)
maximum input voltage
(peak value)
1 dB compression point of
IF amplifier 2 output voltage
(peak value)
500
−
−
mV
Vi(n)(eq)
equivalent input noise
voltage
Rgen = 330 Ω; RL = 330 Ω;
noise of Rgen not included
−
10
13
nV
-----------
Hz
Ri
Ci
input resistance
270
330
5
390
7
Ω
input capacitance
−
pF
Output: pin IFAMP2OUT
Ro
output resistance
270
−
330
5
390
7
Ω
Co
output capacitance
pF
V
Vo(max)(p)
maximum output voltage
(peak value)
1.2
1.5
−
FM demodulator and level detector; see Figs 5 and 6
FM LIMITER
Inputs: pins FMLIMIN and FMLIMDEC; note 12
G
Ri
Ci
gain
Rgen = 50 Ω
74
270
−
80
330
5
−
dB
kΩ
pF
input resistance
input capacitance
390
7
Outputs: pins QDET1 and QDET2
Vo(p-p)
output voltage
(peak-to-peak value)
measured between output
pins
500
700
−
mV
2001 Apr 12
21
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
FM DEMODULATOR
Limiter decoupling: pin FMLIMDEC
RL
CL
load resistance
20
−
−
−
kΩ
load capacitance
−
50
pF
RDS MPX inputs: pins FMLIMIN and FMLIMDEC; note 12
Vstart(lim)(rms) start of limiting of RDS
MPX output voltage
αAF = −3 dB
−
10
15
µV
(RMS value)
RDS MPX output: pin QRDSMPX
Vo(rms)
RDS MPX output voltage ∆f = 22.5 kHz; fmod = 57 kHz; 180
230
280
100
mV
(RMS value)
Vi = 20 µV to 1 V; note 12
Io(max)
maximum RDS MPX
output current
−
−
µA
Ro
B
output resistance
−
−
500
Ω
bandwidth RDS MPX
output
CL = 0; RL > 20 kΩ
200
300
−
kHz
PSRR
power supply ripple
rejection
fripple = 100 Hz to 20 kHz
−
−
40
10
−
dB
FM RDS inputs: pins FMLIMIN and FMLIMDEC; note 12
Vstart(lim)(rms) start of limiting of MPX
output voltage
αAF = −3 dB
15
µV
(RMS value)
Vo(sens)(rms) sensitivity for MPX output ∆f = 22.5 kHz; fmod = 1 kHz;
voltage (RMS value)
de-emphasis = 75 µs
(S+N)/N = 26 dB
(S+N)/N = 46 dB
−
−
10
50
15
75
µV
µV
FM MPX output: pin FMMPX; note 12
Vo(rms)
MPX output voltage
(RMS value)
∆f = 22.5 kHz; fmod = 1 kHz;
de-emphasis = 75 µs;
Vi = 20 µV to 1 V;
180
230
280
mV
αAM
AM suppression of MPX
output
∆f = 22.5 kHz; fmod = 1 kHz;
m = 0.3; de-emphasis = 75 µs
Vi = 500 µV to 300 mV
Vi = 20 to 500 µV
50
−
60
40
40
−
−
dB
dB
dB
µA
−
Vi = 300 mV to 1 V
−
−
Io(max)
maximum MPX output
current
−
100
(S+N)/N
maximum signal plus
noise-to-noise ratio of
MPX output voltage
∆f = 22.5 kHz; fmod = 1 kHz;
de-emphasis = 75 µs;
Vi = 10 mV;
67
70
−
dB
%
THD
total harmonic distortion of ∆f = 75 kHz; fmod = 1 kHz;
−
0.35
0.7
MPX output voltage
de-emphasis = 75 µs;
Vi = 200 µV to 800 mV
2001 Apr 12
22
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
PARAMETER
CONDITIONS
CL = 0; RL > 20 kΩ
MIN.
200
TYP.
MAX.
UNIT
kHz
dB
B
bandwidth MPX output
−
−
−
PSRR
power supply ripple
rejection
fripple = 100 Hz to 20 kHz
−
40
RL(min)
Ro(max)
minimum load resistance
20
−
−
−
kΩ
maximum output
resistance
−
500
Ω
CL(max)
maximum load
capacitance
−
−
50
pF
MPX MUTE
αmute
muting depth
during RDS update
CTRDSMUTE = 10 nF
CTRDSMUTE = 10 nF
60
80
1
−
dB
ms
ms
tatt
attack time MPX mute
decay time MPX mute
0.75
0.75
1.25
1.25
tdecay
1
RDS update: pin TRDSMUTE
Idis
Ich
discharge current
charge current
Vo = 3 V; audio output muted 24
32
38
µA
µA
Vo = 3 V; audio output not
muted
−24
−32
−38
DEMODULATOR AFC
GAFC
AFC gain
∆f = 100 kHz
28
32
−
dB
RDS MPX output: pin RDSMPX; note 12
Voffset(DC)
residual DC offset voltage Ldemod = typical value
Vi = 10 to 80 µV
−
−
0.1
10
1
V
Vi = 80 µV to 800 mV
Ldemod = ±6%
30
mV
Vi = 10 to 80 µV
−
−
0.240
25
1
V
Vi = 80 µV to 800 mV
500
mV
FM IF LEVEL DETECTOR OUTPUT: PIN Vlevel; note 12
Vlevel
DC output voltage
Vi = 10 µV to 1 V
0
−
7
V
V
Vi < 1 µV; standard setting of 0.2
0.6
1.1
level DAA
Vi = 1 mV; standard setting of 1.4
level DAA
1.9
40
2.5
50
V
∆Vlevel
level starting point for
adjustment of step size
standard setting of level slope 30
mV
Vlevel(slope)
slope of level voltage
standard setting of level slope 650
800
950
mV
---------------
20 dB
∆Vstep
level slope adjustment of
step size
Vi = 1 mV
45
50
75
mV
---------------
20 dB
Vlevel(B)
Ro
bandwidth of level output Vi = 10 mV; fmod = 22.5 kHz;
200
300
−
mV
voltage
standard setting of DAA
output resistance
−
−
500
Ω
2001 Apr 12
23
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
SYMBOL
RR
PARAMETER
ripple rejection
CONDITIONS
MIN.
TYP.
40
MAX.
UNIT
dB
V
DDA1(ripple) = 100 mV (RMS);
−
−
fripple = 100 Hz
RDS update
Output: pin AFHOLD
Isink(max) maximum sink current
after first bus transmission
with AF = 1 (start of RDS
update); Vo = 0.5 V
1.0
1.0
1.2
1.2
1.4
1.4
mA
mA
Output: pin AFSAMPLE
Isink(max)
maximum sink current
no RDS update in progress;
Vo = 0.5 V
Test mode; note 3
Temperature compensation diode: pin DAATD
Vi(ext)
external input voltage to
clock state machine
VDAATD(L) = 2.5 V;
DAATD(H) = 3.5 V
2.5
0
−
−
6
3.5
5
V
V
V
V
Clock input: pin SCL
Vi(ext) external input voltage to
clock DAA
Time constant output: pin T1AMAGC
VSCL(L) = 0 V; VSCL(H) = 5 V
Vpulse
enabling voltage of load
PLL signal
pin fref in test mode
5.1
6.9
Notes
1. Measured between pins XTAL1 and XTAL2.
n
2. DAA conversion gain formula: VDAAOUT
=
2 × 0.75 ×
+ 0.25 × (VDAAIN + VDAATD) – VDAATD
---------
128
where n = 0 to 127.
3. Reference frequency pin fref:
a) Rext = 68 kΩ connected to ground, activates the 2nd I2C-bus address
b) Rext = 100 kΩ connected to VDDA1, sets the IC into test mode.
4. Input parameters of AM mixer 1 measured between pins AMMIX1IN1 and AMMIX1IN2.
5. Output parameters of FM mixer and AM mixer 1 measured between pins MIX1OUT1 and MIX1OUT2.
6. Input parameters of AM mixer 2 measured between pins IFAMP1IN and IFAMP1DEC.
7. Output parameters of AM mixer 2 measured between pins AMMIX2OUT1 and AMMIX2OUT2.
8. Input parameters of AM IF2 measured between pins AMIF2IN and AMIF2DEC.
9. Input parameters of FM mixer measured between pins FMMIXIN1 and FMMIXIN2.
10. Input parameters of IF amplifier 1 measured between pins IFAMP1IN and IFAMP1DEC.
11. Input parameters of IF amplifier 2 measured between pins IFAMP2IN and IFAMP2DEC.
12. Input parameters of FM limiter measured between pins FMLIMIN and FMLIMDEC.
2001 Apr 12
24
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
MHB484
6
V
level
(V)
5
4
(1)
3
(2)
2
(3)
1
0
−3
−2
−1
2
3
10
10
10
10
10
1
10
V (mV)
i
(1) Level DAA setting byte 6 = FFH.
(2) Level DAA setting byte 6 = 84H (standard setting).
(3) Level DAA setting byte 6 = 00H.
Vi = VAMIF2IN − VAMIF2DEC
Fig.3 AM level output voltage (DAA) as a function of AM level circuit input voltage.
T
58
59
61
rep
V
level
V
P
TEA6845AH
TEA6845H
3 V
1 kΩ
1 kΩ
64
63
test signal
8.5 V
16 17
13
4.7 nF
oscilloscope,
counter
50 Ω
100 Ω
100 Ω
MHB876
4 V
V
P
8.5 V
Test signal: Trep = 2 ms, tr < 50 ns, tf < 50 ns, and duty factor 50%.
Fig.4 Test circuit for AM noise blanker.
25
2001 Apr 12
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
MHB486
6
V
level
(V)
5
(1)
(2)
4
3
2
1
0
(3)
−3
−2
−1
2
3
10
10
10
10
10
1
10
V (mV)
i
(1) Level DAA setting byte 6 = FFH.
(2) Level DAA setting byte 6 = 84H (standard setting).
(3) Level DAA setting byte 6 = 00H.
Vi = VFMLIMIN − VFMLIMDEC
.
Fig.5 FM level output voltage (DAA) as a function of FM limiter and level circuit input voltage.
2001 Apr 12
26
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
MHB487
9
10
FMMPX
RDSMPX
V
,
V
level
V
(V)
(dB)
0
8
(1)
THD
(%)
−10
−20
−30
−40
−50
−60
−70
−80
7
6
5
4
3
2
(2)
(3)
(4)
(5)
1
0
−3
−2
−1
2
3
10
10
10
1
10
10
10
V (mV)
i
(1) Output voltage for FMMPX and RDSMPX: f = 10.7 MHz; ∆f = 22.5 kHz; f
IF
= 1 kHz.
mod
(2) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50 µs for FMMPX.
(3) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50 µs for RDSMPX.
(4) THD for FMMPX and RDSMPX.
Vi = VFMLIMIN − VFMLIMDEC
.
(5) Level for standard setting of level DAA, byte 6 = 84H.
Fig.6 (S+N)/N, THD and level output voltage for FM mode as a function of FM demodulator input voltage.
2001 Apr 12
27
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12 I2C-BUS PROTOCOL
12.1.3 I2C-bus pULL-UP RESISTORS
12.1 I2C-bus specification
When the IC is used together with the TEA6880H or
TEF6890H and both SCL and SDA lines are connected via
the I2C-bus to the TEA6880H or TEF6890H, the pull-up
resistors of the tuner IC should be connected to the digital
supply voltage of the TEA6880H or TEF6890H. Otherwise
an I2C-bus pull-down can occur switching off the tuner IC
supply when the I2C-bus buffer interface of the TEA6880H
or TEF6890H is enabled for data transfer to the tuner IC.
Information about the I2C-bus can be found in the brochure
“The I2C-bus and how to use it” (order number
9398 393 40011).
The standard I2C-bus specification is expanded by the
following definitions.
IC addresses:
• 1st IC address C2: 1100001
• 2nd IC address C0: 1100000.
12.1.4 FREQUENCY SETTING
For new frequency setting, in both AM and FM mode, the
programmable divider is enabled by setting bit MUTE =1.
To select an FM frequency, two I2C-bus transmissions are
necessary:
Structure of the I2C-bus logic: slave transceiver with auto
increment.
Subaddresses are not used.
12.1.1 TEST MODE
• First: bit MUTE = 1
• Second: bit MUTE = 0.
Connecting pin fref to VDDA1 via a 100 kΩ resistor or
feeding 50 µA into that pin switches the IC into the test
mode.
During test mode the digital-to-analog converters of the
level and antenna DAA functions can be sequenced by the
I2C-bus SCL line.
During test mode either the TEA6880H or TEF6890H
reference frequency, the PLL reference frequency divider
or the programmable divider output can be switched to
pin fref.
12.1.2 DATA TRANSFER FOR THE TEA6845
Data sequence: address, byte 1, byte 2, byte 3, byte 4,
byte 5, and byte 6. The data transfer has to be in this
order. The LSB = 0 indicates a WRITE operation to the
TEA6845.
Bit 7 of each byte is considered the MSB and has to be
transferred as the first bit of the byte.
The data becomes valid at the output of the internal
latches with the acknowledge of each byte. A STOP
condition after any byte can shorten transmission times.
When writing to the transceiver by using the STOP
condition before completion of the whole transfer:
• The remaining bytes will contain the old information
• If the transfer of a byte is not completed, this byte is lost
and the previous information is available.
In byte 5, 4 bits are reserved for test mode purposes.
Those can only be used when the test mode is activated
by the select pin fref.
2001 Apr 12
28
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12.2 I2C-bus protocol
12.2.1 DATA TRANSFER MODE AND IC ADDRESS
Table 1 Write mode
S(1)
address (write)
A(2)
data byte(s)
A(2)
P(3)
Table 2 Read mode
S(1)
address (read)
A(2)
data byte 1
Notes to Tables 1 and 2
1. S = START condition.
2. A = acknowledge.
3. P = STOP condition.
Table 3 IC address byte
IC ADDRESS
MODE
1
1
0
0
0
0
0/1(1)
R/W(2)
Notes
1. Defined by address pin fref:
a) 1 = 1st IC address
b) 0 = 2nd IC address.
2. Read or write mode:
a) 0 = write operation to TEA6840H
b) 1 = read operation from TEA6840H.
12.2.2 WRITE MODE: DATA BYTE 1
Table 4 Format of data byte 1
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
AF
PCA6
PCA5
PCA4
PCA3
PCA2
PCA1
PCA0
Table 5 Description of data byte 1 bits
BIT
SYMBOL
DESCRIPTION
7
AF
Alternative frequency. If AF = 0, then normal operation. If AF = 1, then AF (RDS)
update mode.
6 to 0
PCA[6:0]
Setting of programmable counter of synthesizer PLL. Upper byte of PLL divider
word.
2001 Apr 12
29
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12.2.3 WRITE MODE: DATA BYTE 2
Table 6 Format of data byte 2
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
PCB7
PCB6
PCB5
PCB4
PCB3
PCB2
PCB1
PCB0
Table 7 Description of data byte 2 bits
BIT
SYMBOL
DESCRIPTION
7 to 0
PCB[7:0]
Setting of programmable counter of synthesizer PLL. Lower byte of PLL divider
word.
12.2.4 WRITE MODE: DATA BYTE 3
Table 8 Format of data byte 3
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
MUTE
DAA6
DAA5
DAA4
DAA3
DAA2
DAA1
DAA0
Table 9 Description of data byte 3 bits
BIT
SYMBOL
DESCRIPTION
7
MUTE
FM audio mute. If MUTE = 0, then FM audio not muted. If MUTE = 1, then FM audio
muted; writing to programmable divider enabled.
6 to 0
DAA[6:0]
Setting of antenna digital auto alignment.
12.2.5 WRITE MODE: DATA BYTE 4
Table 10 Format of data byte 4
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
IFMT
RFS2
RFS1
RFS0
IFPR
BND1
BND0
AMFM
Table 11 Description of data byte 4 bits
BIT
SYMBOL
DESCRIPTION
7
IFMT
IF measuring time. If IFMT = 0, then IF measuring time is 20 ms. If IFMT = 1, then
IF measuring time is 2 ms.
6 to 4
RFS[2:0]
IFPR
Reference frequency for synthesizer. These 3 bits determine the reference
frequency, see Table 12.
3
2 and 1
0
IF counter prescaler ratio. If IFPR = 0, then IF prescaler ratio is 100. If IFPR = 1, then
IF prescaler ratio is 10.
BND[1:0]
AMFM
Band switch. These 2 bits select in FM mode band and local or distant, see Table 13;
in AM mode band and AM stereo, see Table 14.
AM or FM switch. If AMFM = 0, then FM mode. If AMFM = 1, then AM mode
2001 Apr 12
30
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
Table 12 Reference frequency setting
RFS2
RFS1
RFS0
f
ref (kHz)
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
100
50
25
20
10
10
10
10
Table 13 FM mode
BND1
BND0
SELECTION
0
0
FM standard: dead zone high current charge pump active,
FM AGC defined by RF level and threshold level setting by
I2C-bus
0
1
1
1
0
1
FM local: dead zone high current charge pump active,
FM AGC source current set to maximum
FM East Europe: dead zone high current charge pump
switched off, current of low current charge pump set to 1 mA
FM weather band: N1 divider set to 1 and I and Q phase shift
network switched on, WX flag signal activated
Table 14 AM mode; note 1
BND1
BND0
SELECTION
AM mono; N2 divider set to 5 (SW)
AM stereo; N2 divider set to 5 (SW)
AM mono; N2 divider set to 10 (LW, MW)
AM stereo; N2 divider set to 10 (LW, MW)
0
0
1
1
0
1
0
1
Note
1. In AM mode dead zone high current charge pump switched off, current of low current charge pump set to 1 mA.
2001 Apr 12
31
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12.2.6 WRITE MODE: DATA BYTE 5
Table 15 Format of data byte 5
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
KAGC
WBA1
WBA0
AMSM
TMS3
TMS2
TMS1
TMS0
Table 16 Description of data byte 5 bits
BIT
SYMBOL
DESCRIPTION
7
KAGC
Keyed FM AGC. If KAGC = 0, then keyed FM AGC is off. If KAGC = 1, then keyed
FM AGC is on.
6 and 5
WBA[1:0]
AMSM
Wide band AGC. These 2 bits set the start value of wide band AGC. For AM,
see Table 17 and for FM, see Table 18.
4
AM soft mute. If AMSM = 0, then AM soft mute is off. If AMSM = 1, then AM soft mute
is on.
3
2
TMS3
In test mode charge pump 3-state. If TMS3 = 0, then 3-state off. If TMS3 = 1, then
3-state on.
TMS2
In test mode external clock for level and antenna DAA. If TMS2 = 0, then external
clock disabled. If TMS2 = 1, then external clock enabled.
1 and 0
TMS[1:0]
In test mode setting of pin fref. These 2 bits define the function of pin fref,
see Table 19.
Table 17 Setting of wide band AGC for AM
AM MIXER 1 INPUT VOLTAGE (PEAK VALUE)
(mV)
WBA1
WBA0
0
0
1
1
0
1
0
1
150
275
400
525
Table 18 Setting of wide band AGC for FM
FM RF MIXER 1 INPUT VOLTAGE (RMS VALUE)
(mV)
WBA1
WBA0
1
1
0
0
1
0
1
0
4
8
12
16
Table 19 Setting function of pin fref in test mode
TMS1
TMS0
OUTPUT AT PIN fref
0
0
0
1
reference frequency of TEA6880H or TEF6890H
tuner oscillator frequency divided by division ratio of
programmable divider
1
1
0
1
PLL synthesizer reference frequency
not used (no output)
2001 Apr 12
32
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
12.2.7 WRITE MODE: DATA BYTE 6
Table 20 Format of data byte 6
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
LST4
LST3
LST2
LST1
LST0
LSL2
LSL1
LSL0
Table 21 Description of data byte 6 bits
BIT
SYMBOL
DESCRIPTION
7 to 3
LST[4:0]
Setting of level DAA starting point. These 5 bits determine the offset of the level
detector output voltage.
2 to 0
LSL[2:0]
Setting of level DAA slope. These 3 bits determine the steepness of the level detector
output voltage.
Table 22 Standard setting of data byte 6 bits
SETTING OF LEVEL DAA STARTING POINT
SETTING OF LEVEL DAA SLOPE
LST4
1
LST3
0
LST2
0
LST1
0
LST0
0
LSL2
1
LSL1
0
LSL0
0
12.2.8 READ MODE: DATA BYTE 1
Table 23 Format of 1st data byte
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
IFC7
IFC6
IFC5
IFC4
IFC3
IFC2
IFC1
IFC0
Table 24 Description of data byte 1 bits
BIT
SYMBOL
DESCRIPTION
7 to 0
IFC[7:0]
IF counter result. These bits contain the last eight bits of the IF counter result.
2001 Apr 12
33
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
13 TEST AND APPLICATION INFORMATION
A
V
tune
B
Coils:
f
5 V
digital
10 kΩ
2.2 kΩ
1.2 kΩ
ref
L1: P826RC-5134N=S
L2: PSGAE-5078D=S
L3: P293BC-1977Z
L4: E543SNAS-02010
L5: 611SNS-1066Y
L6: 369INS-3076X
PLL
3.3 nF
22 Ω
3.3
µH
3.9 nF
DGND
L7; 388BN-1211Z
L8: air coil
(1): 1 to 5 pF trimmer without DAA
(2): series NP0
antenna
100 nF
22 nF
100 nF
38
34 35
36
37
39
33
2.2
MΩ
32
31
ANTENNA
DAA
V
22 kΩ
t
3.3 µH
C
TUNING SYSTEM
BAS16
BB814
D
E
AM
L5
120 nH
10.25 MHz
(1)
270
nH
30
29
28
8.2
pF
FM
AGC
1 µF
1 µF
F
TEA6845AH
TEA6845H
15 pF
290 nH
BA595
BA595
L8
290 nH
WX
27
26
25
L6
N1
×
8.2 pF
FM
÷2
90°
G
22 Ω
330 Ω
I/Q MIXER
H
I
2.2 kΩ
15 pF
RFGND
10 µF
24
AM-NOISE
DETECTOR
PEAK/
AVERAGE
1 nF
1 nF
90°
22 nF
J
5 V
analog
K
L
BAQ806
1 kΩ
23
22
21
N2
AM
RF AGC
100 nF
÷5/10
M
N
WB FLAG
220 nF
6.8
µH
560 Ω
22 µF
IFAMP1
×
AM
MIXER 1
20
22
nF
O
P
270
100
pF
180
µH
150
pF
µH
150 µH
10
nF
1.8 MΩ
1.5 kΩ
19
18
17 16
15 14
13
180
pF
22
nF
22
nF
100
nF
22
nF
10 nF
470 pF
1 nF
BF861C
2.2 MΩ
SFE10.7
MS3
L7
BAV99
L1
22 nF
10
kΩ
47 Ω
22 Ω
22 Ω
10 Ω
Q
MHB878
Fig.7 Application diagram (continued in Fig.8).
34
2001 Apr 12
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
3.3 µH
1 µH
8.5 V
A
(2)
270 pF
4.7 kΩ
5 V
analog
AF
AF
AM
RDS/
FM
MPX
B
SAMPLE HOLD
AUDIO/IF MPX
L4
BB156
22 Ω
100
nF
100 nF
22 nF
6.8 nF
47 µF
2.7 1.8
pF pF
47 µF
47 µF
40 41 42
43
44
45
46
47
48
49
50
51
SEQUENTIAL
CIRCUIT FOR
RDS UPDATING
AM
DETECTOR
POWER
SUPPLY
VCO
MUTE
C
2
V
(I C-bus)
DD
D
E
2 ms/
20 ms
10
kΩ
10
kΩ
52
FM IF
AM IF2
2
SDA
SCL
I C-bus
IF
COUNT
2
I C-BUS
53
54
F
IF2GND
55
56
57
AM
IF AGC
LEVEL
DAA
4.7
kΩ
L3
DEMODULATOR
G
AFC
H
I
47 µF
AM
LEVEL
BLANK
PULSE
Σ
58
AM/FM
LEVEL
J
59
60
61
K
L
FM
LIMITER/
LEVEL
CRYSTAL
OSCILLATOR
20.5
MHz
×
AM
M
N
MIXER2
62
120
kΩ
220
nF
IFAMP2
O
P
L2
63
64
12
11
10
9
8
7
6
5
4
3
2
1
330 Ω
22
nF
220
nF
22
nF
22 nF
22 nF
10 µF
IF1GND
22 nF
SFE10.7
MS3
SFE10.7
MS3
SFR450H
22 Ω
Q
8.5 V
MHB879
Fig.8 Application diagram (continued from Fig.7).
35
2001 Apr 12
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
antenna
f
PLL
FM RF input
ref
input
A
B
C
V
D
tune
10 kΩ
2.2 kΩ
1.2 kΩ
100 nF
relay 1
100
nF
470
kΩ
3.3
nF
22 Ω
3.9
nF
3.3
µH
47 Ω
100 nF
DGND
22
nF
relay 1
teledyne
relay 2
100 nF
38
34
35
36
37
39
33
32
31
ANTENNA
DAA
V
22 kΩ
t
E
BAS16
TUNING SYSTEM
BB814
F
AM
120
nH
10.25 MHz
G
(1)
1.5 to
5 pF
30
29
28
8.2
pF
FM
AGC
1 µF
1 µF
H
1 nF
TEA6845AH
TEA6845H
L8
470 nH
WX
N1
6.8
µH
27
26
25
4:6
BA779-2
47 pF
×
FM
÷2
90°
I
560 pF
3.3 µH
I/Q MIXER
8.2
pF
L6
22 Ω
BA779-2
100 nF
J
K
L
RFGND
L7
220 nH
24
AM NOISE
DETECTOR
PEAK/
AVERAGE
47 µF
90°
22 nF
270
Ω
M
N
BAQ806
23
22
N2
AM
RF AGC
270
Ω
100 nF
÷5/10
21
O
P
22 µF
220 nF
WB
FLAG
IFAMP1
×
AM
MIXER1
220
nF
20
Q
R
680
µH
180
pF
100
µH
1 mH
100
pF
19
18
17 16
15
14
13
220 µH
1.5 kΩ
330 pF
1 nF
1 nF
50 Ω
22
nF
22
nF
22
nF
Ce1
1.2 MΩ
100
nF
470 pF
4.7 µF
BF861C
Ce2
470
kΩ
BAV99
L1
22 nF
47 Ω
SFE10.7
MS3
22 Ω
22 Ω
10 Ω
S
100 nF
100 nF
100 nF
304 Ω
330 Ω
52 Ω 2 Ω
AM RF
input
IF
output
IF
input
MHB895
Fig.9 Test circuit (continued in Fig.10).
36
2001 Apr 12
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
10 Ω
5 V
analog
AF
SAMPLE
AM
RDS/
FM
MPX
AF
HOLD
AUDIO/IF MPX
100 nF
47 µF
47 µF
A
B
C
10 Ω
5 V
digital
100 nF
(1)
270 pF
68
kΩ
68
kΩ
4.7 kΩ
D
100
nF
100
nF
100
nF
10 Ω
L4
8.5 V
BB156
100 nF
47 µF
3.3 µH
22 Ω
3.3 µH
10
kΩ
10
kΩ
100 nF
22 nF
100 nF
2.7 1.8
pF pF
6.8 nF
47 µF
47 µF
40
41 42
43
44 45
46
47
48
49
50
51
SDA
SCL
SEQUENTIAL
CIRCUIT FOR
RDS UPDATING
AM
DETECTOR
POWER
SUPPLY
VCO
MUTE
E
F
2 ms/
20 ms
G
2
I
C-bus
FM IF
AM IF2
52
53
SDA
SCL
2
I
C-bus
interface
IF
COUNT
2
I
C-BUS
H
54 IF2GND
55
DGND
AM
IF AGC
LEVEL
DAA
4.7
kΩ
L3
DEMODULATOR
56
I
57
58
J
K
L
AFC
47 µF
AM
LEVEL
BLANK
PULSE
Σ
AM/FM
LEVEL
59
60
61
M
N
FM
LIMITER/
LEVEL
CRYSTAL
OSCILLATOR
×
AM
20.5
MHz
MIXER2
O
P
62
220
nF
120
kΩ
IFAMP2
Q
R
63
64
L1: P7PSG-X398
L2: P7PSGAE-5078D = S
L3: 392BC-1977Z
L4: E543SNAS-02010
L5: 611SNS-1066Y
L6: 369INS-3076X
L7: MURATA LQN
L8: MURATA LQN
(1): series NP0
12
11 10
9
8
7
6
5
4
3
2
1
L2
330 Ω
22 Ω
100
nF
100
nF
22
nF
220
nF
100
nF
22 nF
22 µF
IF1GND
coaxial connector
test pin
jumper
SFE10.7
MS3
SFR
450H
SFE10.7
MS3
to TEA6880H
S
100 nF
100 nF
304 Ω
100 nF
100 nF
100 nF
100 nF
2 kΩ
304 Ω
330 Ω
52 Ω 2 Ω
47 Ω
330 Ω
2 Ω 52 Ω
2 kΩ
FM IF1
output
FM IF2 AM IF2
input input
FM IF2
output
limiter
input
AM IF
output
MHB896
Fig.10 Test circuit (continued from Fig.9).
37
2001 Apr 12
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
Table 25 DC operating points
UNLOADED DC VOLTAGE (V)
SYMBOL
PIN
AM MODE
TYP.
FM MODE
TYP.
MIN.
MAX.
MIN.
MAX.
CAGC
1
2
3
4
5
6
7
8
9
3.6
2.5
2.5
2.4
7.2
4.3
2.4
4.3
4.8
3.5
3.5
3.2
−
4.1
2.5
2.5
4.6
5.1
3.1
3.1
FMLIMDEC
FMLIMIN
3
2.8
2.8
3
AMIF2DEC
IFAMP2OUT
AMNBHOLD
AMIF2IN
2.7
7.9
4.6
2.7
floating
3.4
3.9
8.4
4.4
5.1
3.2
8
−
floating
external 0
2.7
IF1GND
external 0
3
IFAMP2IN
Coffset
4
5
3.1
3.5
3.1
4
3.5
4
10 floating
11
3
IFAMP2DEC
IFAMP1OUT
IFAMP1IN
VDDA6
3
4
5
−
3
2.7
3.5
4.4
3.1
12 7.2
7.9
2.7
3.6
13 2.4
2.3
2.7
14 external 8.5
15 2.4
external 8.5
2.3
IFAMP1DEC
MIX1OUT1
MIX1OUT2
VDDA5
2.7
3
2.7
3.1
16 external 8.5
17 external 8.5
18 external 8.5
19 2.3
external 8.5
external 8.5
external 8.5
floating
floating
0 (no WX)
floating
open-collector
6.5
AMMIX1IN1
AMMIX1IN2
T1AMAGC
T2AMAGC
IAMAGC
2.75
2.75
2.8
3.1
3.1
4.6
3.1
20 2.3
21
0
0.3 (no WX)
0.5 (no WX)
22 2.5
2.8
23 open-collector
24 2.7
Vref(FMMIX)
FMMIXIN1
RFGND
3.1
1.3
3.4
1.6
7.1
2.8
7.9
3.3
25
26 external 0
27
1
2.3
external 0
2.3
FMMIXIN2
IFMAGC
1
1.3
1.6
2.8
3.3
28 floating
1.5 (external
biasing)
−
4 (external
biasing)
T2FMAGC
T1FMAGC
DAAOUT
DAATD
DAAIN
29 7.5
8
8.3
0.3
3.9
4.6
−
5.3
7
30 floating
1
31
−
0.2
0.2
−
8.25
1.5
8.5
8.5
8.5
32 floating
0.2
−
33
34
35
0
0
0
−
−
−
8.5
8.5
8.5
0
−
Vtune
0
−
CPOUT
VDDA4
0
−
36 external 8.5
external 8.5
2001 Apr 12
38
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
UNLOADED DC VOLTAGE (V)
SYMBOL
PIN
AM MODE
TYP.
FM MODE
TYP.
MIN.
MAX.
MIN.
MAX.
fref
37 3.2
3.4
3.7
3.2
3.4
3.7
VDDD
38 external 5
39 external 0
40 external 0
41 2.2
external 5
external 0
external 0
2.2
DGND
VCOGND
OSCFDB
OSCTNK
VDDA3
2.8
6.1
3.4
7.2
2.8
6.1
3.4
7.2
42
43 external 8.5
44
5
5
external 8.5
0
AFSAMPLE
AFHOLD
TRDSMUTE
0
0.2
2.2
4.3
0.5
2.5
4.6
0.2
0.5
45 open-collector
46 1.9
open-collector
0.7 (muted)
1.2 (muted)
1.7 (muted)
5.2 (not muted) 5.7 (not muted) 6.2 (not muted)
floating
AMAFIF2
RDSMPX
FMMPX
VDDA2
47
4
48 floating
49 floating
50 external 5
51 external 8.5
52 4.8
2.6
3.1
3.5
3.3
4
3
external 5
VDDA1
external 8.5
SDA
5
5
5.2
5.2
4.8
5
5
5.2
5.2
SCL
53 4.8
4.8
IF2GND
QDET1
QDET2
CAFC
54 external 0
55 floating
56 floating
57 floating
58 0.05
external 0
3.6
4.1
4.1
3.4
−
4.6
4.6
4.1
7
3.6
1.2
Vlevel
−
7
0
XTAL1
XTALGND
XTAL2
Iref
59 1.7
2.1
2.5
1.7
2.1
2.5
60 external 0
61 1.7
external 0
1.7
2.1
2.5
4.5
2.1
2.5
4.5
62
4
4.25
4
4.25
AMMIX2OUT1 63 external 8.5
AMMIX2OUT2 64 external 8.5
external 8.5
external 8.5
2001 Apr 12
39
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
14 PACKAGE OUTLINES
QFP64: plastic quad flat package; 64 leads (lead length 1.95 mm); body 14 x 20 x 2.8 mm
SOT319-2
y
X
A
51
33
52
32
Z
E
e
A
2
H
A
E
(A )
3
E
A
1
θ
w M
p
pin 1 index
L
p
b
L
20
64
detail X
1
19
w M
Z
D
v
M
A
b
p
e
D
B
H
v
M
B
D
0
5
10 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
D
H
L
L
v
w
y
Z
Z
E
θ
1
2
3
p
E
p
D
max.
7o
0o
0.25 2.90
0.05 2.65
0.50 0.25 20.1 14.1
0.35 0.14 19.9 13.9
24.2 18.2
23.6 17.6
1.0
0.6
1.2
0.8
1.2
0.8
mm
3.20
0.25
1
1.95
0.2
0.2
0.1
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
97-08-01
99-12-27
SOT319-2
MO-112
2001 Apr 12
40
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
QFP64: plastic quad flat package; 64 leads (lead length 1.95 mm); body 14 x 20 x 2.8 mm
SOT319-5
y
X
A
51
33
52
32
Z
E
e
A
2
H
A
E
E
A
(A )
3
1
θ
w M
L
p
b
pin 1 index
p
L
20
64
detail X
1
19
Z
w M
D
v
v
M
M
A
b
e
p
D
B
H
B
D
0
5
10 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(1)
(1)
Z
(1)
UNIT
A
A
A
b
c
D
E
e
H
D
H
L
L
v
w
y
Z
E
θ
1
2
3
p
E
p
D
max.
7o
0o
0.60 3.05
0.25 2.55
0.50 0.23 20.1 14.1
0.35 0.11 19.9 13.9
24.2 18.2
23.6 17.6
1.03
0.73
1.23 1.23
0.78 0.78
mm
3.40
0.25
1.0
1.95
0.20 0.2 0.10
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
99-06-03
SOT319-5
MO-112CA1
2001 Apr 12
41
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
15 SOLDERING
If wave soldering is used the following conditions must be
observed for optimal results:
15.1 Introduction to soldering surface mount
packages
• Use a double-wave soldering method comprising a
turbulent wave with high upward pressure followed by a
smooth laminar wave.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “Data Handbook IC26; Integrated Circuit Packages”
(document order number 9398 652 90011).
• For packages with leads on two sides and a pitch (e):
– larger than or equal to 1.27 mm, the footprint
longitudinal axis is preferred to be parallel to the
transport direction of the printed-circuit board;
There is no soldering method that is ideal for all surface
mount IC packages. Wave soldering can still be used for
certain surface mount ICs, but it is not suitable for fine pitch
SMDs. In these situations reflow soldering is
recommended.
– smaller than 1.27 mm, the footprint longitudinal axis
must be parallel to the transport direction of the
printed-circuit board.
The footprint must incorporate solder thieves at the
downstream end.
15.2 Reflow soldering
• For packages with leads on four sides, the footprint must
be placed at a 45° angle to the transport direction of the
printed-circuit board. The footprint must incorporate
solder thieves downstream and at the side corners.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Several methods exist for reflowing; for example,
convection or convection/infrared heating in a conveyor
type oven. Throughput times (preheating, soldering and
cooling) vary between 100 and 200 seconds depending
on heating method.
Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Typical reflow peak temperatures range from
215 to 250 °C. The top-surface temperature of the
packages should preferable be kept below 220 °C for
thick/large packages, and below 235 °C for small/thin
packages.
15.4 Manual soldering
Fix the component by first soldering two
diagonally-opposite end leads. Use a low voltage (24 V or
less) soldering iron applied to the flat part of the lead.
Contact time must be limited to 10 seconds at up to
300 °C.
15.3 Wave soldering
Conventional single wave soldering is not recommended
for surface mount devices (SMDs) or printed-circuit boards
with a high component density, as solder bridging and
non-wetting can present major problems.
When using a dedicated tool, all other leads can be
soldered in one operation within 2 to 5 seconds between
270 and 320 °C.
To overcome these problems the double-wave soldering
method was specifically developed.
2001 Apr 12
42
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
15.5 Suitability of surface mount IC packages for wave and reflow soldering methods
SOLDERING METHOD
WAVE
REFLOW(1)
not suitable suitable
PACKAGE
BGA, LFBGA, SQFP, TFBGA
HBCC, HLQFP, HSQFP, HSOP, HTQFP, HTSSOP, SMS
PLCC(3), SO, SOJ
not suitable(2)
suitable
suitable
suitable
LQFP, QFP, TQFP
not recommended(3)(4) suitable
not recommended(5)
suitable
SSOP, TSSOP, VSO
Notes
1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum
temperature (with respect to time) and body size of the package, there is a risk that internal or external package
cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the
Drypack information in the “Data Handbook IC26; Integrated Circuit Packages; Section: Packing Methods”.
2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink
(at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version).
3. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.
The package footprint must incorporate solder thieves downstream and at the side corners.
4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8 mm;
it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.
5. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm; it is
definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.
16 DATA SHEET STATUS
PRODUCT
DATA SHEET STATUS(1)
DEFINITIONS
STATUS(2)
Objective data
Development This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Preliminary data
Product data
Qualification
This data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Production
This data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
2001 Apr 12
43
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
17 DEFINITIONS
18 DISCLAIMERS
Short-form specification
The data in a short-form
Life support applications
These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductors customers using or selling these products
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Limiting values definition Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
at these or at any other conditions above those given in the
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Right to make changes
Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
the use of any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
Application information
Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
no representation or warranty that such applications will be
suitable for the specified use without further testing or
modification.
19 PURCHASE OF PHILIPS I2C COMPONENTS
Purchase of Philips I2C components conveys a license under the Philips’ I2C patent to use the
components in the I2C system provided the system conforms to the I2C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.
2001 Apr 12
44
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
NOTES
2001 Apr 12
45
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
NOTES
2001 Apr 12
46
Philips Semiconductors
Product specification
New In Car Entertainment (NICE) car radio
TEA6845AH; TEA6845H
NOTES
2001 Apr 12
47
Philips Semiconductors – a worldwide company
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For all other countries apply to: Philips Semiconductors,
Marketing Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN,
The Netherlands, Fax. +31 40 27 24825
Internet: http://www.semiconductors.philips.com
72
SCA
© Philips Electronics N.V. 2001
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
753503/01/pp48
Date of release: 2001 Apr 12
Document order number: 9397 750 07488
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