CXA1821 View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXA1821

RF Amplifier for CD Players

Sony Semiconductor 

CXA1821M

Pin No. Symbol I/O

8

F

I

9

E

I

10

EI

—

11

EO

—

18 LC/PD

I

12

VC

O

Equivalent circuit

Description

VCC VCC

VCC VCC

Input pin of tracking

12p

147

8

260k

820k 96.3k

VCC VCC

error amplifier for

Pins 8 and 9. An

external resistor for

12p

147

11 V-I conversion

should be connected

96.3k

because these pins

23.8k

are for current input.

18

8µ

VEE VC

820k

147

9

8µ

VEE VC

8µ 300µ

Gain adjustment of

input signal from Pin

9 for Pins 10 and 11.

Pin 18 is a bias for

260k

LC when connected

10

to VCC and for PD IC

when left open.

VCC VCC

200µ

120

147

12

120

15k

16k

VEE

VCC

DC voltage output

pin of (VCC + VEE)/2.

Connect to GND

when dual power

supply (±2.5V) is

used; connect a

smoothing capacitor

when single power

supply (+5V) is used.

13

TE

O

147

13

123k

400µ

VEE

VCC

10p

VEE

Output pin of

tracking error

amplifier. The F-E

signal is output.

15

FE

O

147

15

25p

174k

400µ

VEE

–3–

10p

VEE

Output pin of focus

error amplifier.

Share Link: