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THS7347

SLOS531 – MAY 2007

PIN CONFIGURATION (continued)

TERMINAL FUNCTIONS

TERMINAL

I/O

DESCRIPTION

NAME

NO.

CH. 1, INPUT A

1

I

Video Input Channel 1, Input A

CH. 2, INPUT A

2

I

Video Input Channel 2, Input A

CH. 3, INPUT A

3

I

Video Input Channel 3, Input A

H-SYNC, INPUT A

4

I

Horizontal Sync, Input A

V-SYNC, INPUT A

5

I

Vertical Sync, Input A

CH. 1, INPUT B

7

I

Video Input Channel 1, Input B

CH. 2, INPUT B

8

I

Video Input Channel 2, Input B

CH. 3, INPUT B

9

I

Video Input Channel 3, Input B

H-SYNC, INPUT B

10

I

Horizontal Sync, Input B

V-SYNC, INPUT B

11

I

Vertical Sync, Input B

17

I

value.

18

I

value.

Ω and a maximum

SDA

19

I/O

value = 19 k

Ω. Pull up to V

Ω and a maximum value = 19 -kΩ.

SCL

20

I

PUC

21

I

high) to set buffer outputs to OFF and monitor outputs ON with ac-bias configuration on Channels 1 to 3

and both H-Sync/V-Sync enabled.

Sets the MUX configuration control. Connect to logic low for MUX Select (pin 16) control of the MUX.

MUX MODE

15

I

Controls the MUX selection when MUX MODE (pin 15) is set to logic low. Connect to logic low for MUX

MUX Select

16

I

selector set to Input A. Connect to logic high for MUX selector set to Input B.

Output Channel 1 from either CH. 1, INPUT A or CH. 1, INPUT B. Connect to ADC/Scalar/Decoder. Both

CH. 1, BUFFER OUTPUT

35, 36

O

pins should be connected together on the PCB.

Output Channel 2 from either CH. 2, INPUT A or CH. 2, INPUT B. Connect to ADC/Scalar/Decoder. Both

CH. 2, BUFFER OUTPUT

31, 32

O

pins should be connected together on the PCB.

Output Channel 3 from either CH. 3, INPUT A or CH. 3, INPUT B. Connect to ADC/Scalar/Decoder. Both

CH. 3, BUFFER OUTPUT

27, 28

O

pins should be connected together on the PCB.

H-SYNC BUFFER

25

O

Horizontal Sync Buffer Output. Connect to ADC/Scalar H-sync input.

OUTPUT

V-SYNC BUFFER

24

O

Vertical Sync Buffer Output. Connect to ADC/Scalar V-sync input.

OUTPUT

Video Monitor Pass-Through Output Channel 1 SAG Correction pin. If SAG is not used, connect Directly

CH. 1, SAG

45

O

to CH. 1, OUTPUT pin 46.

CH. 1, OUTPUT

46

O

Video Monitor Pass-Through Output Channel 1 from either CH. 1, INPUT A or CH. 1, INPUT B.

Video Monitor Pass-Through Output Channel 2 SAG Correction pin. If SAG is not used, connect Directly

CH. 2, SAG

43

O

to CH. 2, OUTPUT pin 44.

CH. 2, OUTPUT

44

O

Video Monitor Pass-Through Output Channel 2 from either CH. 2, INPUT A or CH. 2, INPUT B.

Video Monitor Pass-Through Output Channel 3 SAG Correction pin. If SAG is not used, connect Directly

CH. 3, SAG

41

O

to CH. 3, OUTPUT pin 42.

CH. 3, OUTPUT

42

O

Video Monitor Pass-Through Output Channel 3 from either CH. 3, INPUT A or CH. 3, INPUT B.

H-SYNC MONITOR

40

O

Horizontal Sync Monitor Pass-Through Output.

OUTPUT

V-SYNC MONITOR

39

O

Vertical Sync Monitor Pass-Through Output.

OUTPUT

6, 12, 13, 26,

Ground Reference pin for analog signals. Internally, these pins connect to DGND, although it is

AGND

I

30, 34, 37, 47

recommended to have the AGND and DGND connected to the proper signals for best results.

+VA

29, 33, 38, 48

I

Analog Positive Power Supply Input pins. Connect to 2.7 V to 5 V. Must be equal to or greater than VDD.

VDD

22

I

DGND

23

I

Defaults to 1.45 V (TTL compatible). Connect to external voltage reference to adjust H-Sync/V-Sync input

Schmitt Trigger Adjust

14

I

thresholds from 0.9 V to 2 V range.

12

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