TDA8708BT Просмотр технического описания (PDF) - Philips Electronics

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TDA8708BT

Video analog input interface

Philips Electronics 

Philips Semiconductors

Video analog input interface

BLOCK DIAGRAM

Product specification

TDA8708B

handbook, full pagewidth

video input video input

selection bit 0 selection bit 1

analog

voltage ADC

output input

clock decoupling

input input

TTL outputs VCCO (+ 5 V)

video input 0

video input 1

video input 2

clamp capacitor

connection

AGC capacitor

connection

14

15

16

17 INPUT

18 SELECTOR

24

VIDEO

19 20

AMPLIFIER

AMP.

5

21

8 - bit

ADC

25

TDA8708B

in-range

28

output

AGC &

CLAMP

LOGIC

&

MODE

SELECTION

PEAK LEVEL

DIGITAL COMPARATOR

BLACK LEVEL

DIGITAL COMPARATOR

SYNC LEVEL

DIGITAL COMPARATOR

7

9

1

2

3

TTL

4

OUTPUTS 10

11

12

13

output format/

chip enable

(3-state input)

D7

D6

D5

D4

D3

D2

D1

D0

27

26

6

8

22

23

sync level black level digital VCCD digital

sync pulse sync pulse (+ 5 V)

ground

analog VCCA analog

(+ 5 V)

ground

MSA672

Fig.1 Block diagram.

1996 Nov 26

3

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