TDA8722T Philips Semiconductors, TDA8722T Datasheet

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TDA8722T

Manufacturer Part Number
TDA8722T
Description
I2C-bus programmable modulator for negative video modulation and FM sound.
Manufacturer
Philips Semiconductors
Datasheet

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Philips Semiconductors
Objective specification
File under Integrated Circuits, IC02
DATA SHEET
TDA8722
I
for negative video modulation and
FM sound
2
C-bus programmable modulator
INTEGRATED CIRCUITS
1995 Mar 21

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TDA8722T Summary of contents

Page 1

... DATA SHEET TDA8722 2 I C-bus programmable modulator for negative video modulation and FM sound Objective specification File under Integrated Circuits, IC02 Philips Semiconductors INTEGRATED CIRCUITS 1995 Mar 21 ...

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... APPLICATIONS Video recorders Cable converters Satellite receivers. ORDERING INFORMATION TYPE NUMBER NAME TDA8722T SO20 plastic small outline package; 20 leads; body width 7.5 mm TDA8722M SSOP20 plastic shrink small outline package; 20 leads; body width 4.4 mm 1995 Mar 21 GENERAL DESCRIPTION The TDA8722 is a programmable modulator which ...

Page 3

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound QUICK REFERENCE DATA after the IC has reached thermal equilibrium; unless otherwise specified. DDA DDD amb SYMBOL PARAMETER V analog supply voltage DDA V digital supply voltage DDD ...

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... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound BLOCK DIAGRAM VIDEO handbook, full pagewidth CLAMP CLIP 1 AUDIO 2 SOSCA 3 FM MODULATOR SOSCB 13 SDA 12 SCL DDD 1995 Mar 21 ADJUST 19 17 TDA8722 VIDEO AMP TPSG SWITCH AUDIO TPSG on balance test ...

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... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound PINNING SYMBOL PIN AUDIO 1 audio input SOSCA 2 sound oscillator A SOSCB 3 sound oscillator B UOSCB 4 UHF oscillator B OGND 5 RF oscillator ground UOSCA 6 UHF oscillator A AMP 7 tuning amplifier output CP 8 charge pump output ...

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... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound The RF part of the oscillator consists of: An oscillator which operates at the required video carrier frequency. The range of the oscillator is determined in the application by C5, C6, L5 and D5 mixer. It first combines the video signal and the sound subcarrier to build a baseband TV channel ...

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... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound Table 1 Data format; notes 1 and 2 BIT 7 BYTE MSB Address byte C8 1 Data byte 1 0 Data byte 2 1 Notes 1. The 10 programmable bits of N are b11. 2. Internal hardware sets and ...

Page 8

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound It is possible to change only one data byte. The circuit will recognize which one is received with the value of MSB (0 for data byte 1 and 1 for data byte 2 possible to change the frequency by 1 MHz with data byte easy to increment the channel frequency when its frequency width is 8 MHz by simply incrementing data byte 1 ...

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... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL V analog supply voltage DDA V digital supply voltage DDD V operating supply voltage DD V maximum voltage on all pins max ...

Page 10

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound CHARACTERISTICS valid over the whole UHF band; measured in circuit of Fig.7; DDA DDD amb unless otherwise specified. SYMBOL PARAMETER Supply I supply current DD Video characteristics I input current (AC) ...

Page 11

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound SYMBOL PARAMETER Audio characteristics (for PAL G standard; audio subcarrier at 5.5 MHz) Z audio input impedance 1 m modulation deviation m maximum modulation deviation max THD total harmonic distortion S/N audio audio signal-to-noise ratio ...

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... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound SYMBOL PARAMETER Charge pump output (CP) I output current 8 V output voltage 7 I OFF-state leakage current OZ Amplifier output (AMP) G amplifier current gain V output saturation voltage 7sat Crystal oscillator characteristics (XTAL) ...

Page 13

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound 8. Except for the harmonics of the RF oscillator frequency and for the combinations between the RF oscillator frequency and the sound oscillator frequency ( the and Corresponding to the harmonics of the video signal. Measured by putting a 1 MHz sine wave of 500 mV (peak-to-peak value) at the video input (pin 19) and checking the level ...

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... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound INTERNAL PIN CONFIGURATION handbook, full pagewidth 1 AUDIO 2 SOSCA 3 SOSCB 4 UOSCB 5 OGND 6 UOSCA 7 AMP XTAL 10 DGND ESD protection components are not shown in the diagram. 1995 Mar 21 VOLTAGE REGULATOR Fig.6 Pin equivalent circuit for each pin. ...

Page 15

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound APPLICATION INFORMATION 100 nF handbook, full pagewidth VIDEO C19 100 nF C20 ( AUDIO (1) K1: switches the pre-emphasis filter on or off. (2) L5: air coil; 1.5 turns; diameter of 2 mm. ...

Page 16

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound Application design handbook, full pagewidth 100 nF VIDEO C19 100 nF C20 20 1 AUDIO R1 R2 (1) RV1 allows fine adjustment of the modulation depth between 70 and 90%. 1995 Mar 21 R15 100 100 pF (1) ...

Page 17

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound handbook, full pagewidth 100 nF VIDEO C19 100 nF C20 20 1 AUDIO R1 R2 Fig.9 Application using a symmetrical output with a balun transformer. In the design of the application highly recommended to separate the part of the RF oscillator as much as possible from the part of the RF outputs in order to avoid parasitic coupling between these two parts ...

Page 18

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound Modulation depth With 500 mV (peak-to-peak value) video input signal, the wanted modulation depth must be set by the value of R17 (resistor between pin 17 and ground) as shown Fig.10. For a good accuracy recommended to use a 1% type resistor ...

Page 19

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound 8 handbook, halfpage P/S (dB (1) (2) (3) ( R17 = 120 k . (1) 4.5 MHz. (2) 5.5 MHz. (3) 6.0 MHz. (4) 6.5 MHz. Fig.11 Typical picture-to-sound ratio as a function of the value of C17. VHF operation This IC can operate on frequencies as low as 200 MHz (and especially for VHF 3 band) provided the impedance of the tuned circuit between pins 4 and 6 is > ...

Page 20

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound handbook, full pagewidth SECOND CARRIER VIDEO Fig.13 Possible application for a second sound subcarrier. 1995 Mar C21 100 nF C19 C17 100 nF C20 Objective specification 100 pF 100 pF ...

Page 21

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound PACKAGE OUTLINES SO20: plastic small outline package; 20 leads; body width 7 pin 1 index 1 e DIMENSIONS (inch dimensions are derived from the original mm dimensions) A UNIT max. ...

Page 22

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound SSOP20: plastic shrink small outline package; 20 leads; body width 4 pin 1 index 1 e DIMENSIONS (mm are the original dimensions) A UNIT max. 0.15 1.4 mm 1.5 0.25 0 1.2 Note 1. Plastic or metal protrusions of 0.20 mm maximum per side are not included. ...

Page 23

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound SOLDERING Plastic small outline packages B Y WAVE During placement and before soldering, the component must be fixed with a droplet of adhesive. After curing the adhesive, the component can be soldered. The adhesive can be applied by screen printing, pin transfer or syringe dispensing ...

Page 24

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. ...

Page 25

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound 1995 Mar 21 NOTES 25 Objective specification TDA8722 ...

Page 26

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound 1995 Mar 21 NOTES 26 Objective specification TDA8722 ...

Page 27

... Philips Semiconductors 2 I C-bus programmable modulator for negative video modulation and FM sound 1995 Mar 21 NOTES 27 Objective specification TDA8722 ...

Page 28

... Tel. (02)70-4044, Fax. (02)92 0601 Internet: http://www.semiconductors.philips.com/ps/ Internet: http://www.semiconductors.philips.com/ps/ For all other countries apply to: Philips Semiconductors, For all other countries apply to: Philips Semiconductors, International Marketing and Sales, Building BE-p, International Marketing and Sales, Building BE-p, P.O. Box 218, 5600 MD, EINDHOVEN, The Netherlands, P.O. Box 218, 5600 MD, EINDHOVEN, The Netherlands, Telex 35000 phtcnl, Fax ...

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