CXA2555Q Просмотр технического описания (PDF) - Sony Semiconductor

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CXA2555Q

RF Amplifier for CD Player/CD-ROM

Sony Semiconductor 

Pin

No.

Symbol

I/O

18 CP

I

Equivalent circuit

1.5k

80k

147

18

CXA2555Q

Description

Connects a mirror hold

capacitor.

Non-inverted input of mirror

comparator.

19 MIRR

O

20 VCC

21 RFO 2 O

22 RFO 1 O

23 MODE 2 I

24 MODE 1 I

25 APC ON I

20k

147

40k

19

100k

3k

147

21

147

22

Mirror comparator output.

Power supply.

Buffer switch output for the RF

time constant setting for Pin 21.

ON when Pins 23 and 24 are

connected to GND.

EQ signal output for Pin 22.

147 10k

23

40k

147 10k 40k

24

147

25

100k

Double-speed mode switching

input.

×1

×N

× 1.5N

× 2.0N

Mode 1

GND

VCC

GND

VCC

Mode 2

GND

GND

VCC

VCC

N is varied according to the

external resistor connected to

Pin 26.

Switching pin for APC amplifier

ON/OFF.

OFF when connected to Vcc;

ON when connected to GND.

–5–

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