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CXA1998

Recording/Playback Equalizer Amplifier

Sony Semiconductor 

CXA1998AQ

Pin

No.

Symbol

DC

voltage

I/O I/O

resistance

Equivalent circuit

VCC

VCC

5 AGC IN1

32 AGC IN2

4.0V

I 50kΩ

147 10k

5

32

40k

×4

GND

VGS

VCC

VCC

Description

AGC signal input.

Input resistance

changes between

50kΩ and 100kΩ.

AGC functions when

the signal of –30dBm

or more is input to

AGC for AGC ON.

(External 47µF//300kΩ

for Pin 4)

6 REC IN1

31 REC IN2

4.0V

7

30

AGC OUT1

AGC OUT2

4.0V

I 50kΩ

147

6

31

50k

VGS

GND

GND

23186

1759

VGS

Recording equalizer

input.

VCC

VCC

×2

147 500

18752

7

500

O 147Ω 30

AGC output.

×4

107423 VGS

8

29

REC OUT1

REC OUT2

4.0V

O 147Ω

GND

VCC

9945

GND

VGS

VCC

×3

40k

500

8

×2

5p

29

147

500

× 10

Recording equalizer

output.

GND

GND

–4–

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