TDA8709A Datasheet, PDF (3/28 Pages) NXP Semiconductors – Video analog input interface

Philips Semiconductors
Video analog input interface
BLOCK DIAGRAM
Product specification
TDA8709A
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)
14
15
video input 0
video input 1
video input 2
clamp capacitor
connection
gain control
input
16
17 INPUT
18 ^SELECTOR
24
25
VIDEO
19 20
AMPLIFIER
AMP.
5
21
8 - bit
ADC
TDA8709A
CLAMP
LOGIC
CLAMP LEVEL "16"
DIGITAL COMPARATOR
CLAMP LEVEL "128"
DIGITAL COMPARATOR
7
9
1
2
3
TTL
4
OUTPUTS ₁₀
11
12
13
28
fast output
chip enable
D7
D6
D5
D4
D3
D2
D1
D0
output
format
selection
27
clamp
level
selection
26
clamp
pulse
6
8
digital VCCD digital
(+ 5 V)
ground
22
23
analog VCCA analog
(+ 5 V)
ground
MBB951
Fig.1 Block diagram.
June 1994
3