PRODUCT PREVIEW

STV6688

Video Switch Matrix for TV Applications with S Terminal

®

This is preliminary information on a new product now in development. Details are subject to change without notice.

September 2003

1/12

Key Features

s I²C Bus Control

s Standby Mode

s 4 Y/CVBS Inputs (one for internal TV signal)

s 4 C Inputs (one for internal TV signal)

s 1 Y/C Adder

s 1 Y/CVBS and 1 C Output, each with 0 dB gain

s 1 CVBS Output with 6 dB gain and 150

Ω

Buffer for Monitor

s SYNC Bottom Clamp on all CVBS/Y and

Average Bias on C Inputs

s Bandwidth: 15 MHz

s Crosstalk: 50 dB (min.)

General Description

The STV6688 is a highly-integrated I²C bus-

controlled video switch matrix, optimized for use in

color TV applications.

It is used to control the switching of 4 video signals.

These signals can be in Single Component form

(CVBS) or in Two Component form (Y/C). In both

cases, the STV6688 microcontroller provides a

CVBS signal for an external device (monitor).

Pin Connections

Order Code: STV6688

PDIP20

Order Code: STV6688A

PSO20

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

Y/CVBS_IN1

C_IN1

VCC_V

Y/CVBS_IN2

C_IN2

GND_V

Y/CVBS_IN3

C_IN3

VDD

SDA

DEC

Y/CVBS_IN_TV

C_IN_TV

VCC_B

CVBS_OUT

GND_B

Y/CVBS_OUT

C_OUT

GND

SCL