CXA2568M View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXA2568M

RF Amplifier for CD Players

Sony Semiconductor 

CXA2568M

Description of Functions

RF Amplifier

Each signal current from the photodiodes A, B, C and D is I-V converted, and input to Pins 5, 6, 7 and 8.

These signals are added by the RF summing amplifier and equalized by the RF equalizing amplifier and then

output to Pin 16. When the RF signal is equalized, an equalizing circuit is added to Pin 15.

A

I-V

5

A

24k

B

I-V

6

B

24k

C

I-V

7

C

24k

D

I-V

8

D

24k

GND

RF SUMMING AMP

14k

5k

15 REF

5.7k

25.4k

RF EQAMP

RFO

16

RFOUT

4.2k

4.3k

VC

VC

Focus Error Amplifier

The operation of (B+D)–(A+C) is performed and the signal is output to Pin 14.

A

I-V

5

A

B

I-V

6

B

C

I-V

7

C

D

I-V

8

D

23.3k

23.3k

23.3k

23.3k

GND

25p

174k

25p

174k

FOCUS

ERROR AMP

VC

FE

14

FEOUT

VCC

—10—

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