CXA1854AR 查看數據表（PDF） - Sony Semiconductor

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CXA1854AR

Decoder/Driver/Timing Generator for Color LCD Panels

Sony Semiconductor 

CXA1854AR

Pin

No.

Symbol Pin voltage

9 EXT-R

10 EXT-G

11 EXT-B

Equivalent circuit

VCC1

9

200

10

11

GND1

39 R OUT

VCC2

39

41 G OUT

VCC2

2

41

50

43

50

43 B OUT

GND2

Description

External digital signal input.

There are two threshold

values: Vth1 (approximately

1.2V) and Vth2 (approximately

2.2V). When one of the EXT-

RGB signals exceeds Vth1, all

of the RGB outputs go to

black level (black side clip

level); when an input exceeds

Vth2, only the corresponding

output goes to white level

(white side limiter level).

RGB primary color signal

output.

40 FB R

42 FB G

44 FB B

46 BLKLIM

48 REG

4.2V

VCC2

40

2k

42

44

GND2

Smoothing capacitor

connection for the feedback

circuit of RGB output DC level

control.

Use a low-leakage capacitor

because of high impedance.

VCC1

46

50k

2k

GND1

VCC1

48

60k

40k

40k

GND1

–6–

Sets the RGB output amplitude

(black-black) clip level.

Smoothing capacitor

connection for the internally

generated constant voltage

source circuit.

Connect a capacitor of 1µF or

more.

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