CXA2056Q 查看數據表（PDF） - Sony Semiconductor

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CXA2056Q

Digital CCD Camera Head Amplifier

Sony Semiconductor 

CXA2056Q

Pin

No.

Symbol

Pin voltage

Equivalent circuit

Description

12 OFFSET

1.5 to 3V

&

0V

50k

1.5k

3k

50µA

50k

25k

30k

1.85V

30k

145

50µA 50µA

Controls the output

offset during camera

2k mode.

VRB When 3V: VRB

When 1.5V:

VRB + 100mV

When 0V

(preset mode):

12

VRB + 35mV

13 PBLK

VTH = 1.85V

Active: Low

30k

30k

1.85V

30k

145

50µA

Camera signal

preblanking pulse

input.

Active when Low only

13

during camera mode.

Calibrates the black

level of the AGC output

waveform.

When PBLK is Low,

the DRVOUT potential

is forced to VRB.

14 XRS

VTH = 0.68V

40µA

24k

Sampling

0.68V

7k

97µ

770µA

145

14 Camera signal

sample-and-hold

pulse input.

VTH = 1.5V

15 CLPOB

Active: Low

30k

30k

1.5V

145

15

30k

50µA

Clamp pulse used to

clamp the optical

black portion of the

camera signal after it

passes through the

AGC amplifier.

–5–

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