TDA8012M [NXP]
Low power PLL FM demodulator for satellite TV receivers; 低功耗锁相环调频解调器，卫星电视接收器
| 型号： | TDA8012M |
| 厂家： | 
NXP |
| 描述： | Low power PLL FM demodulator for satellite TV receivers |
| 文件： | 总16页 (文件大小：98K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
DATA SHEET
TDA8012M
Low power PLL FM demodulator
for satellite TV receivers
1996 Mar 26
Product specification
Supersedes data of 1995 Feb 02
File under Integrated Circuits, IC02
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
FEATURES
APPLICATIONS
• High input sensitivity
• Direct Broadcast Satellite (DBS) receivers.
• Fully balanced two-pin Voltage Controlled Oscillator
(VCO)
GENERAL DESCRIPTION
• Low input impedance (50 Ω)
• Low impedance video baseband output
• Internal voltage stabilizer
• Keyed AFC or peak-to-peak AFC
• Carrier detector
The TDA8012M is a sensitive PLL FM demodulator which
is used for the second IF in satellite receivers. It provides
Automatic Gain Control (AGC) and Automatic Frequency
Control (AFC) outputs that can be used to optimize the
level and frequency of the input signal. During the
searching procedure, the AFC output provides a signal
which is used for carrier detection.
• AGC output
• Suitable for High Definition TV (HDTV).
QUICK REFERENCE DATA
SYMBOL
VCC
PARAMETER
supply voltage
CONDITION
VCC = 5 V; Tamb = 25 °C
∆fo = 25 MHz (p-p)
MIN.
4.5
TYP.
5.0
MAX.
5.5
UNIT
V
ICC
supply current
50
53
−
60
57
1
70
61
−
mA
dBµV
V
Vi
input signal voltage level
Vo(p-p)
video output signal voltage
amplitude (peak-to-peak value)
fi
operating input frequency
−
480
−
MHz
ORDERING INFORMATION
TYPE
PACKAGES
NUMBER
NAME
DESCRIPTION
VERSION
TDA8012M
SSOP20 plastic shrink small outline package; 20 leads; body width 4.4 mm
SOT266-1
1996 Mar 26
2
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
BLOCK DIAGRAM
CARRIER
DETECTOR
1
CDF1
CDF2
2
20
AFC
os
AFC
19
18
AFC
KEY
CDO
17
3
NF
PD(pos)
4
PD(neg)
5
16
IFI1
VCO2
VCO1
VCO
6
15
14
IFI2
OSCGND
7
GND
STABILIZER
8
V
CC
13
12
11
LF2
LF1
AGC
9
VIDEO
AGCO
AGC
TDA8012M
10
VIDEO BUFFER
th
MBE251
Fig.1 Block diagram.
1996 Mar 26
3
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
PINNING
SYMBOL
PIN
DESCRIPTION
CDF1
CDF2
PD(pos)
PD(neg)
IFI1
1
2
carrier detector filter 1 input
carrier detector filter 2 input
positive peak detector output
negative peak detector output
IF input 1
3
dbook, halfpage
AFC
AFC
CDF1
CDF2
1
2
20
19
os
4
5
CDO
IFI2
6
IF input 2
PD(pos)
3
18 KEY
17 NF
GND
7
ground
4
PD(neg)
IFI1
VCC
8
supply voltage
5
16 VCO2
AGCO
AGCth
VIDEO
LF1
9
AGC output
TDA8012M
10
11
12
13
14
15
16
17
18
19
20
AGC threshold voltage input
baseband signal output
loop filter 1 input
6
15
14
IFI2
VCO1
GND
7
OSCGND
V
8
13 LF2
CC
LF2
loop filter 2 input
OSCGND
VCO1
VCO2
NF
oscillator ground
9
12
11
AGCO
LF1
oscillator tank circuit 1 input
oscillator tank circuit 2 input
noise filter input
AGC
th
VIDEO
10
MBE250
KEY
key pulse input
AFCCDO
AFCos
AFC and carrier detector output
AFC offset input
Fig.2 Pin configuration.
The circuit provides an AGC signal which is used to drive
a gain-controlled IF amplifier (TDA8011T or TDA8010M)
to ensure a stable PLL demodulation characteristic.
FUNCTIONAL DESCRIPTION
The TDA8012M is a low power PLL FM demodulator
designed for use in satellite TV reception systems.
An analog AFC voltage is also made available. This signal
can be suitably applied to the input of the ADC port of the
PLL frequency synthesizer (TSA5055). The AFC function
may be keyed to address D2MAC and MUSE systems.
The demodulator is based on a Phase-Locked Loop (PLL)
structure including a fully balanced two-pin VCO. A high
gain IF amplifier ensures a high input sensitivity. The video
output voltage is supplied via a highly linear video buffer
which has a low output impedance. The centre frequency
of the VCO and the loop characteristics can be set using
external components.
The TDA8012M includes a Carrier Detector (CD) which is
used for channel detection during search procedures.
1996 Mar 26
4
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
VCC
PARAMETER
MIN.
−0.3
MAX.
UNIT
supply voltage
maximum input voltage on all pins
6.0
VCC
10
V
Vi(max)
−0.3
−
V
Isource(max) maximum output source current
mA
s
tsc
maximum short-circuit time on all outputs
AC load impedance at video output
storage temperature
−
10
ZL
600
−55
−
−
Ω
Tstg
Tj
+150
+150
+80
°C
°C
°C
junction temperature
Tamb
operating ambient temperature
−10
HANDLING
Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe it is
desirable to take normal precautions appropriate to handling MOS devices.
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
VALUE
UNIT
Rth j-a
thermal resistance from junction to ambient in free air
120
K/W
CHARACTERISTICS
VCC = 5 V; fi = 480 MHz; Vi = 57 dBµV; Tamb = 25 °C; measured in application circuit of Fig.4;
unless otherwise specified.
SYMBOL
Supplies
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VCC
ICC
supply voltage
supply current
4.75
5.0
60
5.25
70
V
note 1
50
mA
Voltage controlled oscillator
KVCO
voltage controlled oscillator constant VCC = 4.75 to 5.25 V;
22.5
25
27.5
MHz/V
Tamb = −10 το +80 °C
δfo/δT
∆fo
voltage controlled oscillator drift
voltage controlled oscillator shift
note 2
−
−
−70 × 10−6
−
°C−1
VCC = 4.75 to 5.25 V
−
±750
kHz
Frequency demodulator
Vi
Zi
input signal voltage level
note 3
53
−
57
61
−
dBµV
Ω
input impedance
real part; note 4
50
parallel inductive part;
note 4
−
130
−
nH
KPD
Gv
phase detector constant
phase-lock loop gain
Vi = 57 dBµV
drift; note 5
shift; note 5
−
−
−
0.37
2
−
−
−
V/rad
dB
2
dB
1996 Mar 26
5
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
SYMBOL
PARAMETER
CONDITIONS
MIN.
1.6
TYP.
MAX.
2.4
UNIT
kΩ
Zo(diff)
differential output impedance of the
phase detector
2
CRPLL
Gdiff
phase-lock loop capture range
differential gain
note 6
−
±17
±2
±2
−
−
−
−
−
MHz
%
note 7
note 7
−
Φdiff
differential phase
−
deg
dB
IM3
third-order intermodulation distortion note 8
50
Video output
Vo(p-p)
baseband output signal amplitude
(peak-to-peak value)
∆fo = 25 MHz
0.9
1.0
1.1
V
VO(DC)
Zo
DC voltage level of video output
output impedance
2.1
2.35
10
2.6
50
V
−
Ω
Automatic gain control (note 9)
AGCth
AGC threshold as a function of the
voltage applied to pin 10
IAGC = 0.5 mA; 0.1VCC
−
−
−
1
53
−
dBµV
dBµV
dB
IAGC = 0.5 mA; 0.9VCC 61
LD
level detector
shift;
−
−
V
CC = 4.75 to 5.25 V
drift;
−
1
−
dB
Tamb = −10 to +80 °C
AGC steepness
I
AGC = 0.5 mA; note 10
−
−
8
−
mA/dB
mV
Vsat(AGC)
low level AGC output saturation
voltage
IAGC = 1 mA
200
500
Keying pulse
tkey
tW(key)
VIL
input keyed pulse time period
keyed pulse width
−
64
−
−
µs
µs
V
8
−
LOW level input keyed pulse voltage key on
HIGH level input keyed pulse voltage key off
input impedance
−
−
0.8
−
VIH
Zi
2.7
1
−
V
−
−
kΩ
AFC and carrier detector output (note 11)
δVAFC/δf
AFC steepness
4.9
5.5
6.1
V/MHz
kHz
AFCshift
shift of AFC voltage in relation to
VCO shift with unmodulated
480 MHz input signal
∆VCC = ±5%
−
±180
±500
AFCdrift
drift of AFC voltage in relation to the Tamb = 80 °C; note 12
−
−400
−
kHz
VCO
1996 Mar 26
6
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
Notes
1. The DC supply current is defined for VCC = 5 V.
2. This typical value of −70 ppm/°C or −70 × 10−6 °C−1 can be found in the reference measuring set-up shown in Fig.3.
The temperature drift may be adjusted by the temperature coefficient of the external capacitor in the tank circuit.
3. The circuit is designed for an input level of 57 dBµV. The maximum allowable input level is 61 dBµV. However, for
levels other than 57 dBµV the optimum loop filter values will be different from those given for the 57 dBµV input level
in the reference measuring set-up.
4. The input impedance is reduced to a resistor with a parallel reactance. The values are given at 480 MHz. In order to
reduce the radiation from the oscillator to the RF input, it is recommended to use a symmetrical drive.
5. The PLL loop gain shift and drift are given without loop filter shift and drift (non-temperature compensated external
components).
6. The capture range or lock-in range is defined as the PLL normal operating range. This value depends strongly on
the loop filter characteristics.
7. Measurements with test signals in accordance with CCIR recommendation 473-3. FM modulated signal with
DBS parameters:
a) 625 lines PAL TV system
b) 25 MHz/V modulator sensitivity
c) 1 V (p-p) video signal
d) No SAW filter is used.
8. No SAW filter is used at the input:
a) 16 MHz/V modulator sensitivity
b) 4.43 MHz sine wave colour signal [660 mV (p-p)]
c) 3.25 MHz sine wave luminance signal [700 mV (p-p)]
d) Two Wegner sound sub-carriers at 7.02 and 7.2 MHz (100 mV)
e) Intermodulation distance is defined as the distance between the luminance signal and the intermodulation
products.
9. The characteristics of the AGC function are measured in the application circuit of Fig.4. The circuit illustrated in Fig.4
has been designed to set the maximum AGC current of 1 mA. The output of the AGC function is capable of handling
up to 5 mA. The maximum AGC current can be increased to 5 mA by decreasing the value of the resistor connected
between pins 8 and 9.
10. In the application circuit (see Fig.4) the voltage at the AGC output decreases when the IF input level increases above
the adjusted AGC threshold.
11. The outputs from the AFC and carrier detector are combined at pin 19 (see Fig.3). During search tuning, when the
input frequency is outside the capture range, the combined output (carrier detector function) is at a LOW level
(any voltage below 0.6VCC). When the PLL becomes locked, the voltage at pin 19 rises to a HIGH level
(V19 = 0.8VCC to VCC). When the input channel is close to the centre frequency, V19 falls to the LOW level. As shown
in Fig.3, the voltage at pin 19 is now a function of the centre frequency (AFC function). This information may be read
by a microcontroller via the ADC of the satellite frequency synthesizer (TSA5055) and the I2C-bus.
12. The drift of the AFC voltage is measured in accordance with the following method:
a) At room temperature (Tamb = 25 °C) the TDA8012M is driven by a 480 MHz unmodulated signal. The voltage at
pin 20 must be adjusted to obtain a 1.5 V output at the AFC output (pin 19).
b) At Tamb = 80 °C, due to its temperature drift, the AFC output voltage differs from 1.5 V. The input frequency must,
therefore, be adjusted to obtain 1.5 V at the AFC output. The drift of the AFC voltage will then be equal to the
difference between the new input frequency and 480 MHz.
1996 Mar 26
7
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
MBE253
V19/V
CC
1
carrier detect on
0.8
0.6
0.45
0.3
AFC DATA
frequency
0.15
0
f
o
500 kHz
Fig.3 AFC and carrier detector output.
1996 Mar 26
8
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
APPLICATION INFORMATION
V
d
CC
36 kΩ
2.2 kΩ
13 kΩ
CARRIER
DETECTOR
1 µF
1
2
82 kΩ
2.7 MΩ
20
AFC
19
18
AFC
CDO
22 µF
10
kΩ
1 µF
330 nF
17
3
4
10 MΩ
KEY
180 pF
330 nF
10 MΩ
10 nF
10 nF
5
6
16
15
IF input
VCO
30 nH
1.2 pF
14
7
8
STABILIZER
V
CC
10 pF
1.3
13
12
2
kΩ
4.7
kΩ
kΩ
AGC
9
AGCO
VIDEO
10
47
kΩ
11
TDA8012M
VIDEO BUFFER
MBE252
Fig.4 Application circuit.
1996 Mar 26
9
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
PACKAGE OUTLINE
SSOP20: plastic shrink small outline package; 20 leads; body width 4.4 mm
SOT266-1
D
E
A
X
c
y
H
v
M
A
E
Z
11
20
Q
A
2
A
(A )
3
A
1
pin 1 index
θ
L
p
L
1
10
detail X
w
M
b
p
e
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
L
L
p
Q
v
w
y
Z
θ
1
2
3
p
E
max.
10o
0o
0.15
0
1.4
1.2
0.32
0.20
0.20
0.13
6.6
6.4
4.5
4.3
6.6
6.2
0.75
0.45
0.65
0.45
0.48
0.18
mm
1.5
0.25
0.65
1.0
0.2
0.13
0.1
Note
1. Plastic or metal protrusions of 0.20 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
EIAJ
90-04-05
95-02-25
SOT266-1
1996 Mar 26
10
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
If wave soldering cannot be avoided, the following
conditions must be observed:
SOLDERING
Introduction
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave)
soldering technique should be used.
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.
• The longitudinal axis of the package footprint must
be parallel to the solder flow and must incorporate
solder thieves at the downstream end.
Even with these conditions, only consider wave
soldering SSOP packages that have a body width of
4.4 mm, that is SSOP16 (SOT369-1) or
SSOP20 (SOT266-1).
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our “IC Package Databook” (order code 9398 652 90011).
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.
Reflow soldering
Reflow soldering techniques are suitable for all SSOP
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.
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.
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.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
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.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
Wave soldering
Wave soldering is not recommended for SSOP packages.
This is because of the likelihood of solder bridging due to
closely-spaced leads and the possibility of incomplete
solder penetration in multi-lead devices.
1996 Mar 26
11
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
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.
1996 Mar 26
12
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
NOTES
1996 Mar 26
13
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
NOTES
1996 Mar 26
14
Philips Semiconductors
Product specification
Low power PLL FM demodulator
for satellite TV receivers
TDA8012M
NOTES
1996 Mar 26
15
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Japan: Philips Bldg 13-37, Kohnan 2-chome, Minato-ku,
TOKYO 108, Tel. (03) 3740 5130, Fax. (03) 3740 5077
Korea: Philips House, 260-199 Itaewon-dong,
Yongsan-ku, SEOUL, Tel. (02) 709-1412, Fax. (02) 709-1415
Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA,
SELANGOR, Tel. (03) 750 5214, Fax. (03) 757 4880
Mexico: 5900 Gateway East, Suite 200, EL PASO,
TEXAS 79905, Tel. 9-5(800) 234-7831, Fax. (708) 296-8556
Middle East: see Italy
Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB,
Tel. (040) 2783749, Fax. (040) 2788399
New Zealand: 2 Wagener Place, C.P.O. Box 1041, AUCKLAND,
Tel. (09) 849-4160, Fax. (09) 849-7811
Internet: http://www.semiconductors.philips.com/ps/
For all other countries apply to: Philips Semiconductors,
Marketing & Sales Communications, Building BE-p,
P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands,
Fax. +31-40-2724825
SCDS48
© Philips Electronics N.V. 1996
All rights are reserved. Reproduction in whole or in part is prohibited without the
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other industrial or intellectual property rights.
Norway: Box 1, Manglerud 0612, OSLO,
Tel. (022) 74 8000, Fax. (022) 74 8341
Philippines: PHILIPS SEMICONDUCTORS PHILIPPINES Inc.,
106 Valero St. Salcedo Village, P.O. Box 2108 MCC,
MAKATI, Metro MANILA,
Printed in The Netherlands
Tel. (63) 2 816 6380, Fax. (63) 2 817 3474
Poland: Ul. Lukiska 10, PL 04-123 WARSZAWA,
Tel. (022) 612 2831, Fax. (022) 612 2327
537021/1100/02/pp16
Date of release: 1996 Mar 26
9397 750 00766
Document order number:
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