TDA9840TD-T [NXP]

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TDA9840TD-T
型号: TDA9840TD-T
厂家: NXP    NXP
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INTEGRATED CIRCUITS  
DATA SHEET  
TDA9840  
TV and VTR stereo/dual sound  
processor with digital identification  
and I2C-bus control  
1998 Jul 03  
Product specification  
Supersedes data of 1995 Mar 21  
File under Integrated Circuits, IC02  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
FEATURES  
Supply voltage 5 to 8 V  
De-emphasis  
Source selector  
Level and stereo matrix adjustment possible via the  
I2C-bus  
GENERAL DESCRIPTION  
I2C-bus transceiver  
The TDA9840 is a stereo/dual sound processor for TV and  
VTR sets. Its identification ensures safe operation by using  
internal digital PLL technique with extremely small  
bandwidth, synchronous detection and digital integration  
(switching time maximum 2.3 s; identification concerning  
the main functions).  
AF inputs for NICAM or AM sound (standard L)  
AF outputs for Main and SCART  
AF input and output signals selectable via the I2C-bus  
Information for identified transmission mode is readable  
via I2C-bus  
Software is compatible with the TDA8415/16/17  
Quartz oscillator and clock generator  
Three digital PLL, alignment-free  
Two digital integrators, alignment-free  
Stabilizer circuit for ripple rejection and constant output  
signals  
ESD protection of all pins.  
ORDERING INFORMATION  
PACKAGE  
TYPE NUMBER  
NAME  
DESCRIPTION  
VERSION  
TDA9840  
DIP20  
SO20  
plastic dual in-line package; 20 leads (300 mil)  
SOT146-1  
SOT163-1  
TDA9840T  
plastic small outline package; 20 leads; body width 7.5 mm  
1998 Jul 03  
2
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
QUICK REFERENCE DATA  
SYMBOL  
PARAMETER  
supply voltage (pin 18)  
CONDITIONS  
MIN.  
4.5  
TYP.  
MAX. UNIT  
VP  
5
8.8  
20.5  
V
IP  
supply current (pin 18)  
15.5  
16.5  
250  
mA  
mV  
Vi(rms)  
nominal input signal voltage (Vi 1, Vi 2, Vi 3)  
(RMS value)  
54% modulation  
Vo(rms)  
Vo(rms)  
nominal output signal voltage (RMS value)  
THD 0.3%  
54% modulation  
500  
mV  
clipping level of the output signal voltages  
(RMS value)  
THD 1.5%  
VP = 5 V  
1.4  
2.4  
+2.4  
2.3  
+2.4  
1.9  
5
1.6  
2.65  
+2.5  
2.4  
+2.5  
2.0  
V
VP = 8 V  
V
Gv  
stereo control range for Vi 1 (0.1 dB steps)  
level control range for Vi 2 (0.5 dB steps)  
+2.6  
2.5  
+2.6  
2.1  
100  
dB  
dB  
dB  
dB  
mV  
dB  
%
Vi pil  
input voltage sensitivity of pilot frequency  
weighted signal-to-noise ratio  
total harmonic distortion  
unmodulated  
“CCIR468-3”  
S/N(W)  
THD  
Tamb  
fident  
66  
75  
0.2  
0.3  
+70  
operating ambient temperature range  
identification window width  
0
°C  
normal mode  
STEREO  
DUAL  
2.0  
2.3  
2.0  
2.3  
Hz  
Hz  
fast mode  
STEREO  
DUAL  
3.8  
5.8  
3.8  
5.8  
Hz  
Hz  
tident(on)  
total identification time ON  
normal mode  
STEREO  
DUAL  
0.35  
0.35  
2.3  
2.0  
s
s
fast mode  
STEREO  
DUAL  
0.175  
0.175  
1.1  
1.0  
s
s
Vi tuner  
identification voltage sensitivity  
28  
dBµV  
fpil  
pull-in frequency range of pilot PLL  
fω = 10.008 MHz  
lower side  
296  
296  
Hz  
Hz  
upper side  
302  
302  
1998 Jul 03  
3
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V
V
500 mV RMS  
i 3  
i 4  
C
C
D1  
D2  
10 nF  
±5%  
10 nF  
2.2 µF  
10  
25 k  
2.2 µF  
±5%  
L+R  
2
9
15  
17  
, A  
2.2 µF  
2 dB  
7
25 k  
V
V
14  
13  
5 k  
500 mV RMS  
500 mV RMS  
o 1  
i 1  
6 dB  
10 k  
250 mV RMS  
(from 1st SC)  
0 to 4.5 dB  
L/A/MONO  
25 k  
MAIN  
250 mV RMS  
40 k  
0 to 0.4 dB  
A/MONO  
V
o 2  
6 dB  
L
25 k  
40 k  
250 mV RMS  
(from 2nd SC)  
10 k  
10 k  
V
12  
11  
o 3  
500 mV RMS  
500 mV RMS  
6 dB  
6 dB  
8
2 dB  
R/B  
250 mV RMS  
V
i 2  
R, B  
10 k  
5 k  
SCART  
2.2 µF  
0 to 4.5 dB  
V
o 4  
TDA9840  
stereo  
level  
30 kΩ  
mute  
LEVEL AND  
STEREO  
ADJUSTMENT  
DUAL bit  
DIGITAL PLL  
AND  
DEMODULATOR  
DIGITAL  
INTEGRATOR  
47 pF  
SCL  
SDA  
20  
1
2
I C-BUS  
CONTROL  
V
i pil  
5
4
DIGITAL PLL  
AND  
DEMODULATOR  
DIGITAL  
PLL  
DIGITAL  
INTEGRATOR  
3.3 nF  
2.5 mH  
STEREO  
bit  
tanδ  
0.002  
Q
= 70  
0
25 kΩ  
C
DCL  
100 nF  
CONTROL  
LOGIC  
OSCILLATOR  
25 kΩ  
GENERATION  
OF  
REFERENCE  
VOLTAGES  
2
3
C
AGC  
POWER-ON  
RESET  
V
ref  
10 µF  
C
LP  
6
18  
19  
16  
10 nF  
XTAL  
MBE457  
1/2 V  
GND  
P
C
ref  
10 MHz  
Input and output levels are nominal values.  
They are related to the SCART norm.  
(AM: m = 0.54, FM: f = ±27 kHz).  
100 µF /  
16 V  
V
P
Fig.1 Block diagram of the bipolar TV/VTR-stereo decoder.  
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,kfullapgwedhit  
V
V
500 mV RMS  
i 3  
i 4  
C
C
D1  
D2  
10 nF  
±5%  
10 nF  
2.2 µF  
10  
25 kΩ  
2.2 µF  
±5%  
9
15  
L+R  
2
i 1  
, A  
2.2 µF  
17  
2 dB  
7
25 k  
V
V
14  
13  
5 k  
500 mV RMS  
500 mV RMS  
o 1  
6 dB  
6 dB  
10 k  
250 mV RMS  
(from 1st SC)  
0 to 4.5 dB  
L/A/MONO  
250 mV RMS  
25 k  
MAIN  
40 k  
0 to 0.4 dB  
A/MONO  
V
o 2  
L
25 k  
40 k  
250 mV RMS  
(from 2nd SC)  
10 k  
10 k  
V
12  
11  
o 3  
500 mV RMS  
500 mV RMS  
6 dB  
6 dB  
8
2 dB  
R/B  
250 mV RMS  
V
i 2  
R, B  
10 k  
5 k  
SCART  
2.2 µF  
0 to 4.5 dB  
V
o 4  
TDA9840  
stereo  
level  
27 kΩ  
mute  
LEVEL AND  
STEREO  
ADJUSTMENT  
DUAL bit  
DIGITAL PLL  
DIGITAL  
INTEGRATOR  
AND  
DEMODULATOR  
180 pF  
SCL  
SDA  
20  
1
2
I C-BUS  
CONTROL  
V
i pil  
5
4
DIGITAL PLL  
AND  
DEMODULATOR  
1.8 nF  
±2%  
DIGITAL  
PLL  
DIGITAL  
INTEGRATOR  
4.7 mH  
±5%  
STEREO  
bit  
tanδ  
0.01  
Q
= 25  
0
25 kΩ  
C
DCL  
100 nF  
CONTROL  
LOGIC  
OSCILLATOR  
25 kΩ  
GENERATION  
OF  
2
3
C
POWER-ON  
RESET  
AGC  
V
ref  
REFERENCE  
VOLTAGES  
10 µF  
C
LP  
6
18  
19  
16  
10 nF  
XTAL  
1/2 V  
C
GND  
MBE458  
P
ref  
The components of the external LC band-pass filter have the  
following order-No.:  
Philips Germany only No: 4312 020 17525 or Fastron Sdn.  
Bha., Malaysia type SMCC 472 J for L = 4.7 mHz (±5%)  
Philips Components No: 2222 429 71802, C = 1.8 nF (±2%).  
10 MHz  
100 µF /  
16 V  
Input and output levels are nominal values.  
They are related to the SCART norm.  
(AM: m = 0.54, FM: f = ±27 kHz).  
V
P
Fig.2 Block diagram of the bipolar TV/VTR-stereo decoder with fixed coil (alignment-free).  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
PINNING  
SYMBOL PIN  
DESCRIPTION  
I2C-bus data input/output  
SDA  
CAGC  
CLP  
CDCL  
Vi pil  
Cref  
1
2
3
4
5
6
7
8
9
AGC capacitor of pilot frequency amplifier  
identification low-pass capacitor  
fpage  
SDA  
1
2
20 SCL  
DC loop capacitor  
C
19 XTAL  
AGC  
pilot frequency input voltage  
C
V
capacitor of reference voltage (12VP)  
AF input signal Vi 1 (from 1st sound carrier)  
AF input signal Vi 2 (from 2nd sound carrier)  
AF input signal Vi 3 (NICAM or AM sound (standard L))  
3
18  
17  
LP  
P
C
C
Vi 1  
4
DCL  
D2  
Vi 2  
V
5
16 GND  
i pil  
TDA9840  
Vi 3  
C
C
V
6
15  
14  
13  
12  
11  
ref  
D1  
Vi 4  
10 AF input signal Vi 4 (NICAM)  
11 AF output signal Vo 4 (SCART)  
12 AF output signal Vo 3 (SCART)  
13 AF output signal Vo 2 (main)  
14 AF output signal Vo 1 (main)  
15 50 µs de-emphasis capacitor of AF Channel 1  
16 ground (0 V)  
V
7
i 1  
i 2  
i 3  
i 4  
o 1  
Vo 4  
Vo 3  
Vo 2  
Vo 1  
CD1  
GND  
CD2  
VP  
V
V
V
V
o 2  
8
V
9
o 3  
V
10  
o 4  
MBE459  
17 50 µs de-emphasis capacitor of AF Channel 2  
18 supply voltage (+5 to +8 V)  
19 10 MHz crystal input  
XTAL  
SCL  
Fig.3 Pin configuration.  
20 I2C-bus clock input  
1998 Jul 03  
6
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
are fed to the AM-synchronous demodulator. The  
FUNCTIONAL DESCRIPTION  
demodulator detects the identification signal, which is fed  
through a low-pass filter with external capacitor CLP (pin 3)  
to a Schmitt-trigger for pulse shaping and suppression of  
low level spurious signal components. This is a measure  
against mis-identification.  
The TDA9840 (see Fig.1) receives the signals from the  
FM-demodulators in a TV two sound-carrier system. The  
circuit is realized by the H00485 bipolar process.  
The IC is intended for use in economic TV and VTR  
receivers. Therefore optimum relationship between  
integration of functions and use of external components  
has been striven for. Additionally a new type of  
identification circuit has been developed.  
The identification signal is amplified and fed through an  
AGC low-pass filter with external capacitor CAGC (pin 2) to  
obtain the AGC voltage for controlling the gain of the pilot  
signal amplifier.  
The identification stages consist of two digital PLL circuits  
with digital synchronous demodulation and digital  
integrators to generate the stereo or dual sound  
identification bits which can be read out via the I2C-bus.  
AF signal handling  
The input AF signals, derived from the two sound carriers,  
are processed in analog form using operational  
amplifiers.The circuit incorporates level- and  
A 10 MHz quartz crystal oscillator provides the reference  
clock frequency. The corresponding detection bandwidth  
is larger than ±50 Hz for the pilot carrier signal, so that  
fp-variations from the transmitter can be tracked in case of  
missing synchronisation with the horizontal frequency fH.  
However the detection bandwidth for the identification  
signal is made small (approximately ±1 Hz) to reduce  
mis-identification.  
stereo-adjustment to correct the spreading in the FM  
detector output levels. Dematrixing uses the technique of  
two amplifiers processing the AF signals. Finally, a source  
selector provides the facility to route the mono signal  
through to the outputs (‘forced mono’).  
De-emphasis is performed by two RC low-pass filter  
networks with internal resistors and external capacitors.  
This provides a frequency response with the tolerances  
given in Fig.4.  
Figure 2 shows an example of the alignment-free fp  
band-pass filter. To achieve the required QL of  
A source selector, controlled via the I2C-bus, allows  
selection of the different modes of operation in accordance  
with the transmitted signal. The device was designed for a  
nominal input signal (FM: 54% modulation is equivalent to  
f = ±27 kHz / AM: m = 0.54) of 250 mV RMS (Vi 1, Vi 2),  
respectively 500 mV RMS (Vi 3,Vi 4). A nominal gain of  
6 dB for Vi 1 and Vi 2 signals and 0 dB for Vi 3 and Vi 4  
signals is built-in. By using rail-to-rail operational  
approximately 12, the Q0 at fp of the coil was chosen to be  
approximately 25 (effective Q0 including PCB influence).  
Using coils with other Q0, the RC-network (RFP, CFP) has  
to be adapted accordingly. It is assumed that the loss  
factor tanδ of the resonance capacitor is 0.01 at fp.  
Copper areas under the coil might influence the loaded Q  
and have to be taken into account. Care has also to be  
taken in environments with strong magnetic fields when  
using coils without magnetic shielding.  
amplifiers, the clipping level (THD 1.5%) is 1.6 V RMS for  
VP = 5 V and 2.65 V RMS for VP = 8 V at outputs Vo 1  
,
V
o 2,Vo 3 and Vo 4. Care has been taken to minimize  
I2C-bus transceiver  
switching plops. Also total harmonic distortion and random  
noise are considerably reduced.  
The complete IC is controlled by a microcomputer via the  
I2C-bus. The built-in I2C-bus transceiver transmits the  
identification result to the I2C-bus and receives the control  
data for the source selector and level control. The I2C-bus  
protocol is given in Tables 2 to 12 respectively.  
Identification  
The pilot signal is fed via an external RC high-pass filter  
and single tuned LC band-pass filter to the input of a gain  
controlled amplifier. The external LC band-pass filter in  
combination with the external RC high-pass filter should  
have a loaded Q-factor of about 40 to 50 to ensure the  
highest identification sensitivity. By using a fixed coil (±5%)  
to save the alignment (see Fig.2), a Q-factor of about 12 is  
proposed. This may cause a loss in sensitivity of about  
2 to 3 dB. A digital PLL circuit generates a reference  
carrier, which is synchronized with the pilot carrier.  
This reference carrier and the gain controlled pilot signal  
The data transmission between the microcontroller and  
the other I2C-bus controlled ICs is not disturbed, when the  
supply voltage of the TDA9840 is not connected or when  
powering up or down. Finally, a Schmitt-trigger is built-in  
the SDA/SCL interface to suppress spikes from the  
I2C-bus.  
1998 Jul 03  
7
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
Power supply  
Fast mode / test mode  
The different supply voltages and currents required for the  
analog and digital circuits are derived from an internal  
band-gap reference circuit. The AF reference voltage is  
12VP. For a fast setting to 12VP an internal start-up circuit  
is added. A good ripple rejection is achieved with the  
external capacitor Cref = 100 µF/16 V in conjunction with  
the high ohmic input of the 12VP pin (pin 6). Additional  
DC-load on this pin is prohibited.  
The TDA9840 has a fast mode (test mode) to reduce the  
integration time of the 117/274 Hz integrator from  
approximately 1 to 0.5 s.  
ESD protection  
All pins are ESD protected. The protection circuits  
represent the latest state of the art.  
Internal circuit  
Power-on reset  
The internal pin loading diagram is given in Fig.7.  
When a power-on reset is activated by switching on the  
supply voltage or because of a supply voltage breakdown,  
the 117/274 Hz DPLL, the 117/274 Hz integrator and the  
registers will be reset. Both AF channels  
(Main and SCART) are muted.  
LIMITING VALUES  
In accordance with the Absolute Maximum Rating System (IEC 134).  
SYMBOL  
PARAMETER  
supply voltage (pin 18)  
CONDITIONS  
MIN.  
0.3  
MAX.  
10  
UNIT  
VP  
Vi  
V
voltage at pins 1 and 20  
0.3  
0.3  
25  
0
5.5  
V
Vi  
voltage at pins 2 to 15, 17 and 19  
storage temperature  
VP  
V
Tstg  
+150  
+70  
±300  
°C  
°C  
V
Tamb  
Vesd  
operating ambient temperature  
electrostatic handling for all pins  
note 1  
Note  
1. Charge device model class B: discharging a 200 pF capacitor through a 0 series resistor.  
THERMAL CHARACTERISTICS  
SYMBOL  
Rth j-a  
PARAMETER  
VALUE  
UNIT  
thermal resistance from junction to ambient in free air  
DIP20  
SO20  
73  
90  
K/W  
K/W  
1998 Jul 03  
8
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
CHARACTERISTICS  
VP = 5 V; Tamb = +25 °C; nominal input signal Vi 1, 2 = 0.25 V RMS value (FM: 54% modulation is equivalent to  
f = ±27 kHz); nominal input signal Vi 3, 4 = 0.5 V RMS value (AM: m = 0.54); nominal output signal Vo 1, 2, 3, 4 = 0.5 V  
RMS value; fAF = 1 kHz; Vi pil = 16 mV RMS value; fpil = 54.6875 kHz (identification frequencies: stereo = 117.48 Hz,  
dual = 274.12 Hz), 50 µs pre-emphasis; noise measurement in accordance with “CCIR468-3”, working oscillator  
frequency fω = 10.008 MHz; currents into the IC positive; measured in test circuit according to Fig.5; unless otherwise  
specified.  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN.  
TYP.  
MAX.  
UNIT  
Supply  
VP  
supply voltage (pin 18)  
supply current (pin 18)  
total power dissipation  
4.5  
5
8.8  
V
IP  
15.5  
16.5  
82.5  
20.5  
mA  
mW  
V
Ptot  
69.75  
12VP 0.1 12VP  
180.4  
12VP + 0.1  
Vn(DC)  
DC voltage  
(pins 7 to 15 and 17)  
Vref(DC)  
lL(DC)  
DC reference voltage (pin 6)  
DC leakage current (pin 6)  
12VP 0.1 12VP  
12VP + 0.1  
±1  
V
µA  
AF Inputs; Vi 1 and Vi 2 (pins 7 and 8)  
Vi(rms)  
nominal input signal voltage  
(RMS value)  
54% modulation  
0.25  
V
Vi(rms)  
clipping voltage level  
(RMS value)  
THD 1.5%; note 1  
VP = 5 V  
0.625  
1.050  
0.715  
1.200  
V
V
VP = 8 V  
THD 1.5%; note 2  
VP = 5 V  
0.780  
1.300  
5
0.900  
1.500  
6
V
VP = 8 V  
V
Gv  
AF signal voltage gain  
G = Vo/Vi; note 3  
only at pin 7  
7
dB  
dB  
dB  
dB  
dB  
dB  
dB  
kΩ  
kΩ  
Gv (Vo1) stereo control range  
+2.4  
2.3  
+2.5  
2.4  
0.1  
+2.6  
2.5  
nominal step  
maximum 49 steps  
only at pin 8  
Gv (Vo2) level control range  
+2.4  
1.9  
+2.5  
2.0  
0.5  
+2.6  
2.1  
nominal step  
maximum 9 steps  
see Fig.4  
Ri  
input resistance  
40  
50  
60  
Rdeem  
internal de-emphasis resistor  
(pins 15 and 17)  
4.25  
5.0  
5.75  
Additional AF input pin (pins 9 and 10)  
Vi(rms)  
nominal input signal voltage  
(RMS value)  
54% modulation  
0.5  
V
Vi(rms)  
clipping voltage level  
(RMS value)  
THD 1.5%  
VP = 5 V  
1.25  
2.10  
1.40  
2.35  
V
V
VP = 8 V  
Gv  
Ri  
AF signal voltage gain  
input resistance  
1  
0
1
dB  
G = Vo/Vi; note 3  
40  
50  
60  
kΩ  
1998 Jul 03  
9
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
SYMBOL  
AF outputs (pins 11 to 14)  
Vo(rms) nominal output signal voltage THD 0.3%;  
PARAMETER  
CONDITIONS  
MIN.  
TYP.  
MAX.  
UNIT  
0.5  
V
(RMS value)  
54% modulation  
THD 1.5%  
VP = 5 V  
Vo(rms)  
clipping voltage level  
(RMS value)  
1.4  
2.4  
1.6  
V
VP = 8 V  
2.65  
250  
V
Ro  
CL  
RL  
output resistance  
150  
350  
1.5  
load capacitor on output  
nF  
kΩ  
load resistor on output  
(AC-coupled)  
10  
B
frequency response  
(bandwidth)  
fi = 40 to 20000 Hz;  
note 4  
0.5  
+0.5  
dB  
B3 dB  
THD  
frequency response  
3 dB; note 4  
300  
350  
0.2  
75  
400  
0.3  
kHz  
%
total harmonic distortion  
note 3  
S/N(W)  
weighted signal-to-noise ratio “CCIR468-3”  
(quasi-peak)  
66  
dB  
αcr  
crosstalk attenuation for  
DUAL  
notes 3 and 5  
Zs 1 kΩ  
70  
40  
76  
75  
45  
80  
dB  
dB  
dB  
mV  
STEREO  
Zs 1 kΩ  
αmute  
mute attenuation  
Zs 1 k; note 3  
after switching  
VDC  
change of DC level output  
voltage between any two  
modes of operation  
±10  
PSRR  
IO(DC)  
αI2C  
power supply ripple rejection  
fr = 70 Hz; see Fig.6  
note 6  
50  
65  
dB  
µA  
dB  
DC output current  
noise from I2C-bus  
±20  
80  
90  
10 MHz crystal oscillator (pin 19)  
fr  
series resonant frequency of  
crystal (fundamental mode)  
CL = 20 pF  
9.995  
9.988  
10.008  
10.008  
10.021  
10.028  
MHz  
MHz  
fω  
working oscillator frequency  
over operating  
(running in parallel resonance temperature range  
mode)  
including ageing and  
influence of drive  
circuit  
Rr  
equivalent crystal series  
resistance  
even at extremely low  
drive level (<1 pW)  
over operating  
60  
200  
temperature range  
with C0 = 6 pF  
Rn  
crystal series resistance of  
unwanted mode  
2 × Rr  
C0  
C1  
crystal parallel capacitance  
crystal motional capacitance  
with Rr 100 Ω  
6
10  
50  
pF  
fF  
25  
1998 Jul 03  
10  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN.  
TYP.  
MAX.  
UNIT  
µW  
PXTAL  
level of drive in operation  
5
VOSC(p-p) oscillator operating voltage  
(peak-to-peak value)  
500  
550  
600  
mV  
Pilot processing  
Vi pil(rms)  
pilot input voltage level at pin 5 unmodulated  
5
100  
mV  
(RMS value)  
Ri pil  
m
pilot input resistance  
modulation depth  
500  
25  
1000  
50  
kΩ  
AM  
75  
%
fpil  
pilot PLL pull-in frequency  
range (referred to  
fpil = 54.6875 kHz)  
fω = 9.988 MHz  
lower side  
405  
405  
Hz  
Hz  
upper side  
192  
192  
fω = 10.008 MHz  
lower side  
296  
296  
Hz  
Hz  
upper side  
302  
302  
fω = 10.028 MHz  
lower side  
188  
411  
0
188  
411  
1.7  
Hz  
Hz  
ms  
Hz  
kΩ  
mV  
upper side  
tpil  
pilot PLL pull-in time  
fLP  
low-pass frequency response 3 dB  
450  
18.75  
600  
25  
750  
31.25  
70  
R3  
low-pass output resistance  
V4(rms)  
identification threshold voltage  
(RMS value)  
QL  
loaded quality factor of  
resonance circuit  
high sensitivity  
40  
50  
loaded quality factor of  
resonance circuit with fixed  
coil  
sensitivity loss  
2 to 3 dB; see Fig.2  
12  
tacqui AGC AGC acquisition time  
Vi pil(rms) switched from  
0 to 100 mV RMS  
value  
0.1  
s
Identification (internal functions)  
Vi tuner  
C/N  
H
identification voltage sensitivity note 7  
(pin 5)  
28  
33  
2
dBµV  
dB/Hz  
dB  
pilot carrier-to-noise ratio for  
start of identification  
note 8  
note 7  
hysteresis  
1998 Jul 03  
11  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
SYMBOL  
PARAMETER  
CONDITIONS  
normal mode  
MIN.  
TYP.  
MAX.  
UNIT  
fdet  
pull-in frequency range of  
identification PLL (referred to  
lower side  
STEREO  
DUAL  
fdet STEREO = 117.48 Hz and  
0.38  
0.38  
Hz  
fdet DUAL = 274.12 Hz)  
0.69  
0.69  
Hz  
normal mode  
upper side  
STEREO  
DUAL  
0.69  
0.69  
0.69  
0.69  
Hz  
Hz  
fast mode lower side  
STEREO  
0.89  
2.05  
0.89  
2.05  
Hz  
Hz  
DUAL  
fast mode upper side  
STEREO  
1.15  
2.05  
1.15  
2.05  
Hz  
Hz  
DUAL  
tdet  
pull-in time of identification  
PLL (referred to  
fdet STEREO = 117.48 Hz and  
fdet DUAL = 274.12 Hz)  
normal mode  
STEREO  
0
0
1.35  
0.72  
s
s
DUAL  
fast mode  
STEREO  
0
0
0.57  
0.25  
s
s
DUAL  
fident  
identification window  
normal mode; note 9  
STEREO  
frequency width (referred to  
fdet STEREO = 117.48 Hz and  
fdet DUAL = 274.12 Hz)  
2.0  
2.3  
2.0  
2.3  
Hz  
Hz  
DUAL  
fast mode; note 9  
STEREO  
3.8  
3.8  
Hz  
Hz  
s
DUAL  
5.8  
5.8  
tintegr  
integrator time constant  
total identification time on  
normal mode  
fast mode  
0.94  
0.47  
0.94  
0.47  
s
tident(on)  
normal mode; note 10  
STEREO  
0.35  
0.35  
2.3  
2.0  
s
s
DUAL  
fast mode; note 10  
STEREO  
0.175  
0.175  
1.1  
1.0  
s
s
DUAL  
tident(off)  
total identification time off  
normal mode; note 11  
STEREO  
0.6  
0.6  
1.6  
1.6  
s
s
DUAL  
fast mode; note 11  
STEREO  
0.3  
0.3  
0.8  
0.8  
s
s
DUAL  
1998 Jul 03  
12  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
SYMBOL  
I2C-bus transceiver (pins 1 and 20)  
fCI clock frequency  
I2C-bus: SCL (pin 20)  
PARAMETER  
CONDITIONS  
MIN.  
TYP.  
MAX.  
UNIT  
0
100  
kHz  
VIL  
VIH  
tlow  
thigh  
tr  
LOW level input voltage  
0.3  
3.0  
4.7  
4.0  
1.5  
5.5  
V
HIGH level input voltage  
timing LOW period  
timing HIGH period  
rise time  
V
µs  
µs  
µs  
µs  
µA  
µA  
1
tf  
fall time  
0.3  
10  
10  
IIL  
LOW level input current  
HIGH level input current  
IIH  
I2C-bus: SDA (pin 1)  
VIL  
VIH  
tr  
LOW level input voltage  
0.3  
3.0  
1.5  
5.5  
1
V
HIGH level input voltage  
rise time  
V
µs  
µs  
µs  
µA  
mA  
µA  
tf  
fall time  
0.3  
tsu  
IIL  
data set-up time  
0.25  
LOW level input current  
LOW level output current  
HIGH level input current  
10  
IOL  
IIH  
3  
10  
Notes  
1. Input control amplifiers with Gv = 0 dB.  
2. Input control amplifiers with Gv = 2 dB.  
3. Vo = 0.5 V RMS value; f = 1 kHz; input control amplifiers with Gv = 0 dB.  
4. Without de-emphasis capacitors with respect to nominal gain.  
5. In dual mode: A (B)-signal into B (A) channel.  
In stereo mode: R-signal into left channel; L-signal = 0.  
6. Test procedure tbf (same as TDA9855).  
7. Tuner input signal, measured with PCALH reference front end (12EMF, 75 , 2T/20T/white bar, 100% video) and  
PC/SC1 = 13 dB; PC/SC2 = 20 dB. The pilot band-pass has to be aligned.  
8. Bandwidth of the pilot BP-filter B3 dB = 1.2 kHz. Vi 2 input driven with identification-modulated pilot carrier and white  
noise.  
9. Identification window is defined as total pull-in frequency range (lower plus upper side) of identification PLL (steady  
detection) plus window increase due to integrator (fluctuating detection).  
10. The maximum total system identification time ON is equal to tident(on) plus tacqui AGC plus tI2C read-out  
11. The maximum total system identification time OFF is equal to tident(off) plus tI2C read-out  
.
.
1998 Jul 03  
13  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
I2C-BUS PROTOCOL FOR THE TV AND VTR  
STEREO/DUAL SOUND PROCESSOR TDA9840  
HIGH. After a successful reading of the status register, the  
bit D7 will be reset to LOW.  
The TDA9840 has an I2C-bus interface with five registers:  
status, test, switch, level and stereo adjustment register  
controlled by a microcontroller via I2C-bus. The status  
register can be read and the other registers are write  
registers. The status byte represents the transmitter status  
detected by the identification circuit and the power-on  
reset status. The switch register controls the source  
selectors of the AF signal part, and the level and stereo  
adjustment register set the input level and stereo  
adjustment stage. Additionally, a test register is built-in to  
reduce the detection time of the identification circuit (test  
mode, fast mode respectively).  
The bits D5 and D6 represent the transmitter status  
detected by the identification circuit (stereo, dual or mono  
transmission). The other bits are set to 0 (default).  
Data format for the receiver  
Table 1 Registers for receiver mode (see Table 6)  
REGISTER  
Switch register  
VALUE  
(00)HEX  
Port register  
(01)HEX (without function)  
(02)HEX  
Level adjustment register  
Stereo adjustment register (03)HEX  
Test register (04)HEX  
I2C-bus transceiver and data-handling  
(bus specification)  
The TDA9840 is controlled by a microcomputer via the  
bidirectional 2-line I2C-bus. The two lines are a serial data  
line (SDA) and a serial clock line (SCL). Both lines must be  
connected to a positive supply via a pull-up resistor. Data  
transfer may be initiated only when the bus is not busy.  
The port register is without function, because this IC has  
no control ports as TDA8415/6/7. A data byte for the  
subaddress (01)HEX will not be stored in any register. An  
acknowledge will be sent to the microcontroller.  
The first byte of the data transmission is the slave address  
and the second byte is the subaddress indicating the data  
register in which the data shall be stored. Starting from  
subaddress (00)HEX the n-th data byte will automatically be  
stored under subaddress n 1.  
When the bus is free, both lines are HIGH. The data on the  
SDA line must be stable during the HIGH period of the  
clock. The HIGH or LOW state of the data line can only  
change, when the clock signal on the SCL line is LOW.  
The set-up and hold times are specified in the  
Chapter “Characteristics”.  
All 8 bits of the subaddress are decoded by the device.  
The subaddresses from (04)HEX to (FF)HEX are forbidden  
for the user. If the I2C-bus transceiver receives  
subaddresses from (05)HEX to (FF)HEX, no acknowledge  
will be sent back to the microcontroller.  
A HIGH-to-LOW transition of the SDA line, while SCL is  
HIGH, is defined as the start condition. A LOW-to-HIGH  
transition of the SDA line, while SCL is HIGH, is defined as  
the stop condition. The bus transceiver will be reset on the  
reception of a start condition. The bus is considered to be  
busy after the start condition. The bus is considered to be  
free again after a stop condition.  
Switch register  
The source selector is controlled by the switch register.  
Table 7 shows the modes of operation. Note, that in the  
event of the external operation mode, no further selection  
is possible.  
Data format transmitter mode  
For the data transmission no subaddress is to be  
transmitted, because there is only one read register  
implemented. So the total number of bytes reduces from  
three to two. The second byte represents the status of  
the IC.  
Status register (see Table 4)  
The bit D7 (PONRES) represents the status of the IC and  
indicates whether the power-on reset was activated by  
switching-on the supply voltage or a supply voltage  
breakdown. If so, the I2C-bus transceiver, the digital PLLs  
and integrators are initialized and the PONRES bit is set to  
1998 Jul 03  
14  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
Level adjustment register  
Level and stereo adjustment  
The information about the level adjustment of the AF  
channel Vi 2 (pin 8) is stored in the level adjustment  
register (see Table 10). There are 10 steps (positions) of  
the AF level adjustment stage. The level range is from  
2.5 dB up to 2.0 dB in 0.5 dB steps.  
For the level and stereo adjustment of both AF channels  
Vi 1 and Vi 2, the following procedure will be recommended.  
Level adjustment of the AF channel V  
Feeds AF signal at the input Vi 2  
After a power-on reset, the data byte of the level  
adjustment register will be set to (00)HEX: 0 dB gain at the  
AF input Vi 2.  
Sets the data byte of the switch register (dual mode)  
to (1A)HEX  
Measures the signal at the outputs Vo 2 or Vo 4  
Adjusts the output level with the level adjustment  
Stereo adjustment register  
register.  
The information about the stereo adjustment of the  
AF channel Vi 1 (pin 7) is stored in the stereo adjustment  
register (see Table 11). There are 50 steps (positions) of  
the AF stereo adjustment stage. The stereo range is from  
2.5 dB up to 2.4 dB in 0.1 dB steps.  
Stereo adjustment of the AF channel Vi 1  
Feeds AF stereo signals at the inputs Vi 1 ((L+R)/2) and  
Vi 2 (R)  
Sets the data byte of the switch register (stereo mode)  
to (2A)HEX  
After a power-on reset, the data byte of the stereo  
adjustment register will be set to (00)HEX: 0 dB gain at the  
AF input Vi 1.  
Measures the crosstalk attenuation between Vo 1 and  
Vo 2 or Vo 3 and Vo 4  
Test register (also used for fast mode)  
Adjusts the crosstalk attenuation with the stereo  
adjustment register.  
Table 12 shows the meaning of the test register. The  
integration time of the integrator is approximately 1 s  
(normal mode, default). If the data byte of this register is  
set to HIGH, the integration time is reduced from  
approximately 1 to approximately 0.5 s (fast mode, test  
mode). The pull-in ranges of the identification PLLs are  
changed to:  
During the stereo adjustment the data byte of the level  
adjustment register does not change.  
After the level and stereo adjustment, the bytes of the level  
and stereo adjustment register must be stored by the  
microcontroller in a memory. (To avoid mis-adjustment it  
would be wise to compare the stored bytes with the proper  
adjustment bytes). If the PONRES bit of the status register  
will be set to HIGH (see status register) the data bytes for  
these both registers must be sent out of the memory to the  
TDA9840 via I2C-bus. Also the data byte of the switch  
register (see Table 7) must be changed, because the  
AF outputs are muted.  
Stereo: 0.89/+1.15 Hz  
Dual: ±2.05 Hz.  
If the integration time of the integrator is switched from one  
mode to the other (i.e. from fast mode/test mode to normal  
mode), the status register bits D5 and D6 might set to zero  
internally (MONO). Therefore, the previous status register  
information has to be stored by the microcontroller until the  
transmitter status is detected again by the identification  
circuit (now in the new mode) the first time.  
The data byte of the test register can be reset in two  
different ways to (00)HEX: integration time approximately  
1 s, normal mode:  
after a power-on reset, for instance by switching the  
power supply Vp off and on again  
data transmission via I2C-bus for the test register  
(see Table 12).  
1998 Jul 03  
15  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
I2C-BUS FORMAT  
X is the read/write control bit; X = 0, order to write (the circuit is slave receiver); X = 1, order to read (the circuit is slave  
transmitter). If more than 1 byte of DATA is transmitted, then auto-increment of the significant subaddress is performed.  
Table 2 I2C-bus; SLAVE ADDRESS/SUBADDRESS/DATA format  
S
SLAVE ADDRESS  
A
SUBADDRESS  
A
DATA  
P
Table 3 Explanation of Table 2  
BIT  
FUNCTION  
S
start condition  
SLAVE ADDRESS  
1000 010X  
A
acknowledge, generated by the slave  
dual sound A/B  
SUBADDRESS  
DATA  
P
data byte; see Table 6  
stop condition  
Table 4 I2C-bus; SLAVE ADDRESS/DATA to read the status byte (X = 1 in the address byte)  
DATA  
SLAVE  
FUNCTION  
ADDRESS  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
Status byte  
1000 0101  
PONRES  
ST  
DS  
0
0
0
0
0
Table 5 Explanation of Table 4  
BIT  
FUNCTION  
PONRES = 0  
PONRES = 1  
ST = 0; DS = 0  
ST = 0; DS = 1  
ST = 1; DS = 0  
ST = 1; DS = 1  
after a successful reading of the status register  
after power-on reset or after supply breakdown  
MONO sound identified  
DUAL sound identified  
STEREO sound identified  
incorrect identification  
1998 Jul 03  
16  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
Table 6 I2C-bus; SUBADDRESS/DATA for writing (X = 0 in the address byte)  
DATA  
FUNCTION  
Switching  
SUBADDRESS  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
0000 0000  
0000 0001  
0
0
SW6  
0
SW5  
0
SW4  
0
SW3  
0
SW2  
0
SW1  
0
SW0  
0
Without function  
(note 1)  
Level adjustment  
Stereo adjustment  
0000 0010  
0000 0011  
0
0
0
0
0
0
LV3  
ST3  
LV2  
ST2  
LV1  
ST1  
LV0  
ST0  
ST5  
ST4  
Note  
1. This byte is acknowledged by the TDA9840.  
Function of the bits:  
SW6 to SW0 input and output AF selection; see Table 7  
LV3 to LV0 level adjustment; see Table 10  
ST5 to ST0 stereo adjustment; see Table 11.  
Table 7 Data byte to select AF inputs and AF outputs [subaddress (00)HEX  
INPUT SIGNAL OUTPUT SIGNAL  
ST/DS/M EXT MAIN SCART  
Vi 1 Vi 2 Vi 3 Vi 4 Vo 1 Vo 2 Vo 3 Vo 4  
]
DATA  
TRANSMISSION  
MODE  
PIN PIN PIN PIN PIN PIN PIN PIN D7 D6 D5 D4 D3 D2 D1 D0 HEX  
7
8
9
10 14 13 12 11  
Sound mute  
MONO  
M
S
S
A
A
A
A
C
D
no signal  
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0
1
0
1
1
0
1
1
1
1
1
0
0
0
1
0
1
0
1
1
0
0
0
0
0
0
1
1
0
0
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
00  
10  
10  
2A  
12  
1A  
16  
1E  
7A  
M
ST  
M
S
L
M
S
R
B
B
B
B
D
M
S
L
M
S
R
A
B
A
B
D
STEREO  
R
R
B
B
B
B
DUAL  
DS  
A
A
A
A
C
A
A
B
B
C
External  
Table 8 Explanation of Table 7  
SIGNAL DESCRIPTION  
SIGNAL  
DESCRIPTION  
R
L
right  
left  
C
NICAM or AM sound (standard L)  
NICAM  
D
S
M
mono sound  
(L + R)  
--------------------  
2
DS  
ST  
dual sound  
stereo sound  
A and B  
dual sound A/B  
1998 Jul 03  
17  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
Table 9 AF switch configuration  
INPUT  
OUTPUT  
TRANSMITTER STATUS  
MONO  
SIGNAL  
MAIN  
SCART  
M
M
M
M
M
STEREO  
DUAL  
L
R
A
B
C
D
L or M  
L or M  
R or M  
A or B  
A or B  
C
R or M  
A
B
C
D
External  
D
Table 10 Data byte to select level adjustment [subaddress (02)HEX  
]
DATA  
D3  
GV (dB)  
+2.5  
D7  
D6  
D5  
D4  
D2  
D1  
D0  
HEX  
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
0
0
0
1
1
0
0
0
0
0
0
0
1
0
0
1
1
0
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
0D  
0C  
0B  
0A  
09  
00  
01  
02  
03  
04  
+2.0  
+1.5  
+1.0  
+0.5  
0
0.5  
1.0  
1.5  
2.0  
1998 Jul 03  
18  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
Table 11 Data byte to select stereo adjustment  
[subaddress (03)HEX  
]
DATA  
DATA  
D7 D6 D5 D4 D3 D2 D1 D0 HEX  
GV  
(dB)  
GV  
(dB)  
D7 D6 D5 D4 D3 D2 D1 D0 HEX  
+2.5  
+2.4  
+2.3  
+2.2  
+2.1  
+2.0  
+1.9  
+1.8  
+1.7  
+1.6  
+1.5  
+1.4  
+1.3  
+1.2  
+1.1  
+1.0  
+0.9  
+0.8  
+0.7  
+0.6  
+0.5  
+0.4  
+0.3  
+0.2  
+0.1  
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
39  
38  
37  
36  
35  
34  
33  
32  
31  
30  
2F  
2E  
2D  
2C  
2B  
2A  
29  
28  
27  
26  
25  
24  
23  
22  
21  
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
00  
01  
02  
03  
04  
05  
06  
07  
08  
09  
0A  
0B  
0C  
0D  
0E  
0F  
10  
11  
12  
13  
14  
15  
16  
17  
18  
0.1  
0.2  
0.3  
0.4  
0.5  
0.6  
0.7  
0.8  
0.9  
1.0  
1.1  
1.2  
1.3  
1.4  
1.5  
1.6  
1.7  
1.8  
1.9  
2.0  
2.1  
2.2  
2.3  
2.4  
Table 12 Data byte to select integration time [subaddress (04)HEX  
]
DATA  
FUNCTION  
Test byte  
SUBADDRESS  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
0000 0100  
X
X
X
X
X
X
INTFU INT1SN  
Function of the bits:  
INTFU = 0 integrator function enabled  
INTFU = 1 integrator function disabled  
INT1SN = 0 integration time approximately 1 s (default)  
INT1SN = 1integration time approximately 0.5 s.  
1998 Jul 03  
19  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
MED647  
+2  
V
R: 15%;  
C: 5%  
oAF  
(dB)  
+1  
0
1  
2  
R: +15%;  
C: +5%  
2
3
4
5
10  
10  
10  
10  
10  
f
(Hz)  
oAF  
Fig.4 Tolerance scheme of AF frequency response; de-emphasis with CD1, CD2 = 10 nF (±5%),  
Rinternal = 5 k(±15%).  
1998 Jul 03  
20  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
SDA  
SCL  
1
2
3
20  
19  
18  
10 MHz  
10 µF  
10 nF  
C
C
C
XTAL  
AGC  
LP  
100 µF/16 V  
V
P
C
VP  
C
ref  
10 µF  
100 nF  
DCL  
5%  
C
50 µs  
de-emphasis  
1/2 V  
4
17  
16  
15  
14  
13  
12  
P
D2 10 nF  
5
2.5  
mH  
3.3  
nF  
TDA9840  
47 pF  
5%  
50 µs  
de-emphasis  
6
C
D1 10 nF  
30 kΩ  
2.2 µF  
V
V
V
V
AF from 5.5 MHz  
AF from 5.742 MHz  
7
V
i 1  
i 2  
i 3  
i 4  
o 1  
main  
scart  
2.2 µF  
2.2 µF  
2.2 µF  
V
8
o 2  
from external sound source C  
from external sound source D  
9
V
V
o 3  
o 4  
10  
11  
MBE460  
Fig.5 Test circuit of the stereo decoder TDA9840.  
V
o 1  
14  
13  
V
o 2  
V
measurements  
on outputs  
V
B
P
V
18  
o 3  
TDA9840  
12  
11  
V
o 4  
10 k  
8
6
7
9
10  
16  
100 µF  
5 V modulated  
with 200 mV (p-p)  
100 µF /  
100 µF  
16 V  
70 Hz  
MBE462  
Fig.6 Test circuit for measurement of ripple rejection.  
21  
1998 Jul 03  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
INTERNAL CIRCUITRY  
+
+
2 kΩ  
2 kΩ  
20  
19  
1
SCL  
SDA  
+
XTAL  
+
3 pF  
13 kΩ  
+5 V  
18  
17  
5 kΩ  
V
P
+
68 µA  
25 kΩ  
5 kΩ  
C
2
3
+
+
D2  
C
AGC  
+
+
C
GND  
LP  
16  
15  
25 kΩ  
40 µA  
+
1/2 V  
4
P
60 µA  
+
5 kΩ  
C
C
D1  
DCL  
+
25 kΩ  
+
40 µA  
5 kΩ  
5 kΩ  
5
6
+
V
i pil  
C
ref  
14  
V
o 1  
22.5 kΩ  
I
B
5 kΩ  
5 kΩ  
+
+
200 µA  
10 kΩ  
10 kΩ  
25 kΩ  
TDA9840  
–2 dB  
7
8
9
V
i 1  
13  
40 kΩ  
V
I
I
I
o 2  
B
B
B
AF outputs  
1/2 V  
P
–2 dB  
200 µA  
V
i 2  
+
40 kΩ  
AF inputs  
12  
+
1/2 V  
V
P
o 3  
–6 dB  
V
i 3  
25 kΩ  
200 µA  
1/2 V  
P
11  
25 kΩ  
V
–6 dB  
10  
o 4  
V
i 4  
25 kΩ  
1/2 V  
I
B
200 µA  
P
MBE461  
V
P
ESD protection diode  
for pins 2 to 15, 17 and 19  
zener diode protection  
for pins 1, 18 and 20  
Fig.7 Internal circuits.  
1998 Jul 03  
22  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
PACKAGE OUTLINES  
DIP20: plastic dual in-line package; 20 leads (300 mil)  
SOT146-1  
D
M
E
A
2
A
A
1
L
c
e
w M  
Z
b
1
(e )  
1
b
M
H
20  
11  
pin 1 index  
E
1
10  
0
5
10 mm  
scale  
DIMENSIONS (inch dimensions are derived from the original mm dimensions)  
(1)  
A
A
A
(1)  
(1)  
Z
1
2
UNIT  
mm  
b
b
c
D
E
e
e
1
L
M
M
H
w
1
E
max.  
min.  
max.  
max.  
1.73  
1.30  
0.53  
0.38  
0.36  
0.23  
26.92  
26.54  
6.40  
6.22  
3.60  
3.05  
8.25  
7.80  
10.0  
8.3  
4.2  
0.51  
3.2  
2.54  
0.10  
7.62  
0.30  
0.254  
0.01  
2.0  
0.068  
0.051  
0.021  
0.015  
0.014  
0.009  
1.060  
1.045  
0.25  
0.24  
0.14  
0.12  
0.32  
0.31  
0.39  
0.33  
inches  
0.17  
0.020  
0.13  
0.078  
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  
92-11-17  
95-05-24  
SOT146-1  
SC603  
1998 Jul 03  
23  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
SO20: plastic small outline package; 20 leads; body width 7.5 mm  
SOT163-1  
D
E
A
X
c
y
H
E
v
M
A
Z
20  
11  
Q
A
2
A
(A )  
3
A
1
pin 1 index  
θ
L
p
L
1
10  
w
detail X  
e
M
b
p
0
5
10 mm  
scale  
DIMENSIONS (inch dimensions are derived from the original mm dimensions)  
A
max.  
(1)  
(1)  
(1)  
UNIT  
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
θ
1
2
3
p
E
p
Z
0.30  
0.10  
2.45  
2.25  
0.49  
0.36  
0.32  
0.23  
13.0  
12.6  
7.6  
7.4  
10.65  
10.00  
1.1  
0.4  
1.1  
1.0  
0.9  
0.4  
mm  
2.65  
0.25  
0.01  
1.27  
0.050  
1.4  
0.25 0.25  
0.01  
0.1  
8o  
0o  
0.012 0.096  
0.004 0.089  
0.019 0.013 0.51  
0.014 0.009 0.49  
0.30  
0.29  
0.419  
0.394  
0.043 0.043  
0.016 0.039  
0.035  
0.016  
inches 0.10  
0.055  
0.01 0.004  
Note  
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
EIAJ  
95-01-24  
97-05-22  
SOT163-1  
075E04  
MS-013AC  
1998 Jul 03  
24  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
Several techniques exist for reflowing; for example,  
thermal conduction by heated belt. Dwell times vary  
between 50 and 300 seconds depending on heating  
method. Typical reflow temperatures range from  
215 to 250 °C.  
SOLDERING  
Introduction  
There is no soldering method that is ideal for all IC  
packages. Wave soldering is often preferred when  
through-hole and surface mounted components are mixed  
on one printed-circuit board. However, wave soldering is  
not always suitable for surface mounted ICs, or for  
printed-circuits with high population densities. In these  
situations reflow soldering is often used.  
Preheating is necessary to dry the paste and evaporate  
the binding agent. Preheating duration: 45 minutes at  
45 °C.  
WAVE SOLDERING  
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”  
(order code 9398 652 90011).  
Wave soldering techniques can be used for all SO  
packages if the following conditions are observed:  
A double-wave (a turbulent wave with high upward  
pressure followed by a smooth laminar wave) soldering  
technique should be used.  
DIP  
The longitudinal axis of the package footprint must be  
parallel to the solder flow.  
SOLDERING BY DIPPING OR BY WAVE  
The maximum permissible temperature of the solder is  
260 °C; solder at this temperature must not be in contact  
with the joint for more than 5 seconds. The total contact  
time of successive solder waves must not exceed  
5 seconds.  
The package footprint must incorporate solder thieves at  
the downstream end.  
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.  
The device may be mounted up to the seating plane, but  
the temperature of the plastic body must not exceed the  
specified maximum storage temperature (Tstg max). If the  
printed-circuit board has been pre-heated, forced cooling  
may be necessary immediately after soldering to keep the  
temperature within the permissible limit.  
Maximum permissible solder temperature is 260 °C, and  
maximum duration of package immersion in solder is  
10 seconds, if cooled to less than 150 °C within  
6 seconds. Typical dwell time is 4 seconds at 250 °C.  
REPAIRING SOLDERED JOINTS  
A mildly-activated flux will eliminate the need for removal  
of corrosive residues in most applications.  
Apply a low voltage soldering iron (less than 24 V) to the  
lead(s) of the package, below the seating plane or not  
more than 2 mm above it. If the temperature of the  
soldering iron bit is less than 300 °C it may remain in  
contact for up to 10 seconds. If the bit temperature is  
between 300 and 400 °C, contact may be up to 5 seconds.  
REPAIRING SOLDERED JOINTS  
Fix the component by first soldering two diagonally-  
opposite end leads. Use only a low voltage soldering iron  
(less than 24 V) applied to the flat part of the lead. Contact  
time must be limited to 10 seconds at up to 300 °C. When  
using a dedicated tool, all other leads can be soldered in  
one operation within 2 to 5 seconds between  
270 and 320 °C.  
SO  
REFLOW SOLDERING  
Reflow soldering techniques are suitable for all SO  
packages.  
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.  
1998 Jul 03  
25  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
DEFINITIONS  
Data sheet status  
Objective specification  
Preliminary specification  
Product specification  
This data sheet contains target or goal specifications for product development.  
This data sheet contains preliminary data; supplementary data may be published later.  
This data sheet contains final product specifications.  
Limiting values  
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). 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.  
Application information  
Where application information is given, it is advisory and does not form part of the specification.  
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 customers using or selling these products for  
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such  
improper use or sale.  
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.  
1998 Jul 03  
26  
Philips Semiconductors  
Product specification  
TV and VTR stereo/dual sound processor  
with digital identification and I2C-bus control  
TDA9840  
NOTES  
1998 Jul 03  
27  
Philips Semiconductors – a worldwide company  
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Middle East: see Italy  
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Tel. +353 1 7640 000, Fax. +353 1 7640 200  
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Turkey: Talatpasa Cad. No. 5, 80640 GÜLTEPE/ISTANBUL,  
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Tel. +1 800 234 7381  
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For all other countries apply to: Philips Semiconductors,  
Internet: http://www.semiconductors.philips.com  
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© Philips Electronics N.V. 1998  
SCA60  
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Date of release: 1998 Jul 03  
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