MC13281AP View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

MC13281AP

80/100 MHz Video Processor

Motorola => Freescale 

MC13280AY

MC13281B MC13281A

Pin

Pin

1

1

3

3

5

5

2

2

Name

R

Subcontrast

Control

G

Subcontrast

Control

B

Subcontrast

Control

R Input

4

4

G Input

6

6

B Input

MC13280AY MC13281A/B

PIN FUNCTION DESCRIPTION

Equivalent Internal Circuit

VCC

5.0 V

50 k

Vref

0.1

Clamp 5.0 V

75 Ω

10 k

1.0 k

Description

These pins provides a maximum of

26 dB attenuation to vary the gain of

each video amplifier separately.

Input voltage is from 0 to 5.0 V.

Increasing the voltage will increase

the contrast level.

The input coupling capacitor is used

for input clamping storage. The

maximum source impedance is 100 Ω.

Input polarity of the video signal is

positive.

Nominal 0.7 Vpp input signal is

recommended (maximum 1.0 Vpp).

7

7

Ground

Ground pin. Connect to a clean, solid

ground.

N/A

8

N/C

Connected to ground.

10

N/C

11

N/C

12

N/C

8

9

VCC

Connect to 8.0 Vdc supply, ±5%.

Decoupling is required at this pin.

9

13

Contrast

5.0 V

Overall Contrast Control for the three

2.5 V

channels.

42 k

2.0 k

The input range is 0 V to 5.0 V. An

increase of voltage increases the

contrast.

10

14

Fast

Commutate

11

15

B Emitter

Output

15

19

G Emitter

Video

Signal

Output

Contrast

18

22

R Emitter

Output

Must be connected to ground.

VCC

The video outputs are configured as

emitter–followers with a driving

capability of about 15 mA each.

The dc voltage at these three emitters

is set to 1.2 V (black level).

RE = 330

Typical

The dc current through the output

stage is determined by the emitter

resistors (typically 330 Ω).

4

MOTOROLA ANALOG IC DEVICE DATA

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