CXA1782 데이터 시트보기 (PDF) - Sony Semiconductor

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CXA1782

RF Signal Processing Servo Amplifier for CD players

Sony Semiconductor 

CXA1782CQ/CR

Pin Description

Pin

No.

Symbol

I/O

Equivalent circuit

1 FEO

25p

147

1

O

174k

300µ

10k

Description

Focus error amplifier output.

Connected internally to the FZC

51k comparator input.

9k

2 FEI

I

2

3

3 FDFCT

I

147

100k

147

Focus error input.

Capacitor connection pin for defect

time constant.

4 FGD

I

68k

147

4

130k

20µ

Ground this pin through a capacitor

when decreasing the focus servo

high-frequency gain.

5 FLB

I

6 FE_O

O

13 TA_O

O

16 SL_O

O

7 FE_M

I

40k

5

External time constant setting pin

for increasing the focus servo low-

frequency.

6

13

16

250µ

90k

147

7

50k

–3–

Focus drive output.

Tracking drive output.

Sled drive output.

Focus amplifier inverted input.

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