CXA1372BQ View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXA1372BQ

RF Signal Processing Servo Amplifier for CD Player

Sony Semiconductor 

CXA1372BQ/BS

DEFECT circuit

After inversion, RFI signal is bottom held by means of the long and short time constants. The long time-

constant bottom hold keeps the mirror level prior to the defect.

The short time-constant bottom hold responds to a disc mirror defect in excess of 0.1ms, and this is

differentiated and level-shifted through the AC coupling circuit.

The long and short time-constant signals are compared to generate at mirror defect detection signal.

0.033µ

CC1

34

CC2

35

a

RFO 40

b

×2

DEFECT AMP

c

e

30 DFCT

d

DEFECT BOTTOM

37

HOLD

CB

0.01µ

DEFECT COMPARATOR

a RFO

b DEFECT

AMP

BOTTOM

c HOLD (1);

Solid line CC1

e DEFECT

d BOTTOM

HOLD (2);

Dotted line CC2

H

L

– 16 –

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