SPT9210SCS Просмотр технического описания (PDF) - Signal Processing Technologies

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SPT9210SCS

ANALOG VIDEO PROCESSOR

Signal Processing Technologies 

TERMINAL EXPLANATIONS

VCC

5 kΩ

1

50 µA

2 kΩ

Pin Name Voltage

1 Select SW 1.4 V

When this terminal is open or

high, it is in the composite

mode. When this terminal is

low, it is in the S-Video mode.

VCC VCC VCC VCC VCC

Pin

2

Name

Input Y

Voltage

2.0 V

VCC CLK Signal

10 kΩ

Clamp

Voltage

5

VCC

+

-

2 kΩ

Pin Name Voltage

5 C-Clamp C 1.5 V

This terminal connects the

capacitor that determines the

time constant of the

chrominance clamp circuit.

From

AGC

2 kΩ

To Final

Amp

2

V_Clamp =

2.0 V

This terminal is the luminance

signal input of the S-Video

mode. The clamp circuit fixes

the sync/bottom voltage to

2.0 V.

Clamp

VCC

VCC

Pin Name Voltage

6 Output C 2.5 V

3

VREF =

2.5 V

VCC VCC VCC

Pin

3

Name

Input C

Voltage

2.5 V

This terminal is the

chrominance signal input for

S-Video mode. The bias circuit

fixes the center voltage to

2.5 V.

1 kΩ

VCC VCC VCC

V_BG =

1.2 V

4

10 kΩ

40 kΩ

Pin Name

4

VRef

Voltage

2.5 V

This terminal is the bypass

capacitor connection for the

internal reference voltage

circuit.

AGC

+

-

6 kΩ

3 kΩ

VCC VCC VCC

V_BG =

1.2 V

7.5 kΩ

15 kΩ

9

This terminal is the

chrominance signal output.

6

4.8 mA

Pin Name

7 VRL Force

8 VRL Sense

9 VRL Adjust

Voltage

1.0 V

1.0 V

0.6 V

7

Buffer

Amp

+

-

These terminals are the

reference voltage sources for

the ADC on the low side.

They are the output, sense

and adjustment terminals.

8

SPT

6

SPT9210

11/7/97

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