TDA8222 ST Microelectronics, TDA8222 Datasheet

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TDA8222

Manufacturer Part Number
TDA8222
Description
VIDEO & SOUND IF SYSTEM WITH VIDEO AND SOUND SWITCHES
Manufacturer
ST Microelectronics
Datasheet

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TDA8222
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DESCRIPTION
The TDA8222 is a video and sound IF circuit in
Shrink DIP24 package for color and black and white
TV sets. It is intended to operate with a negatively
modulated vision carrier and frequency modulated
sound carrier. It incorporates video and audio
switches compatible with SCART european norm.
PIN CONNECTIONS
October 1993
TUNER AGC STARTING POINT ADJUSTMENT
3 STAGE IF GAIN CONTROLLED AMPLIFIER
SYNCHRONOUS VIDEO DEMODULATOR
TOP SYNC AGC CIRCUIT
WHITE AND BLACK NOISE INVERTER
TUNER AGC OUTPUT FOR PNP TUNERS
(suitable also for MOSFET tuners)
ANALOG AFC
FM DETECTOR
AUDIO AND VIDEO SWITCHES COMPAT-
IBLE WITH SCART EUROPEAN NORM
DC VOLUME CONTROL
MUTE FUNCTION
FM REFERENCE TUNED CIRCUIT
DEMODULATED AUDIO OUTPUT
AUDIO SWITCH OUTPUT
VIDEO SWITCH OUTPUT
TUNER AGC OUTPUT
VIDEO SWITCH
BALANCED IF INPUT
BALANCED IF INPUT
VOLUME CONTROL
GROUND
V
V
WITH VIDEO AND SOUND SWITCHES
CC
CC
1
2
3
4
5
6
7
8
9
10
11
12
VIDEO & SOUND IF SYSTEM
24
23
22
21
20
19
18
17
16
15
14
13
ORDER CODE : TDA8222
AGC TIME CONSTANT
IF LC
IF LC
SWITCHING INPUT
AFC LC
AFC OUTPUT
DEMODULATED CVBS OUTPUT
EXTERNAL AUDIO INPUT
2nd IF SOUND INPUT
2nd IF DECOUPLING INPUT + MUTE
INTERNAL VIDEO INPUT
EXTERNAL VIDEO INPUT
(Plastic Package)
SHRINK DIP24
TDA8222
1/9

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TDA8222 Summary of contents

Page 1

... IBLE WITH SCART EUROPEAN NORM . DC VOLUME CONTROL MUTE FUNCTION DESCRIPTION The TDA8222 is a video and sound IF circuit in Shrink DIP24 package for color and black and white TV sets intended to operate with a negatively modulated vision carrier and frequency modulated sound carrier. It incorporates video and audio switches compatible with SCART european norm ...

Page 2

... The AGC detector operates on top sync level, an external capacitor on Pin 24 controls the time con- stant. The voltage on this capacitor is converted into a current to control the amplifier stage. 20 AFC Video Amplifier White and Black Noise Inverter 6dB 6dB TDA8222 21 7 video signal ...

Page 3

... D = 90%, Video BW = 5MHz, RMS , f = 1kHz, Audio BW = 20kHz RMS m on Pin unless otherwise specified) Test Conditions I(3) + I(4 Refer to test circuit Top sync to white without output filter See Figure 1 TDA8222 Value 13 -40, +150 0, +70 Value Max. 75 25kHz, Min. Typ. Max. 8 ...

Page 4

... TDA8222 ELECTRICAL CHARACTERISTICS (continued 9V, IF input = 10mV amb CC Sound carrier input : 5.5MHz, 10mV Volume attenuation = 0dB, R load Symbol Parameter DEMODULATED VIDEO OUTPUT (Pin 18) (continued) D Differential Gain G D Differential Phase P V Residual Carrier Signal (RMS 18 value) V Residual 2nd Harmonic (RMS ...

Page 5

... D = 90%, Video BW = 5MHz, RMS , f = 1kHz, Audio BW = 20kHz RMS m on Pin unless otherwise specified) Test Conditions Attenuation = 0dB IN RMS No signal No signal 1.5V 13-14 DC 13- High impedance controling circuit TDA8222 25kHz, Min. Typ. Max. Unit 0.05 0.3 % 1.6 1.9 2.2 V 1.8 V 0.7 1.0 1 ...

Page 6

... TDA8222 TEST CIRCUIT 6/9 ...

Page 7

... Figure 4 : Tuner AGC Output Current on Pin 2 Output Current (mA) 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 V (V) 0.2 Pin 0.1 TDA8222 on Pin 19 IF Frequency (MHz) 38.7 38.9 39.1 Diff Input Voltage (mV White spike noise clamp Top white White noise level insertion Black Noise level insertion Top synchronization Black spike noise clamp t 39.3 7/9 ...

Page 8

... TDA8222 TYPICAL APPLICATION (for B/G standard 8 3.3 100k 2.7k 100nF ...

Page 9

... Millimeters Typ. Max. 3.3 0.59 0.36 1.42 23.11 9.73 1.778 19.558 7.62 6.86 5. system, is granted provided that the system conforms to 2 the I C Standard Specifications as defined by Philips. TDA8222 Stand-off b1 E Stand-off b3 Inches Min. Typ. 0.130 0.020 0.014 0.023 0.008 0.014 0.030 0.056 0.030 0.910 0.313 0.383 0.070 ...

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