CXA1878Q 查看數據表（PDF） - Sony Semiconductor

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CXA1878Q

Dolby∗ B-C Type Noise Reduction System with Recording/Playback Equalizer Amplifier

Sony Semiconductor 

Pin

No.

Symbol

Typical pin voltage

I/O Z (in)

DC AC

Equivalent circuit

CXA1878Q

Description

9

43

REC OUT1

REC OUT2

0.0V

–3dBv

O

—

200

50k

9

43 200

Recording equalizer

amplifier output

10 IREF

VEE

+1.2V — — —

192

10

6k

11 NR IREF

VEE

+1.2V

—

—

—

8k 40k

11

Reference current

setting for built-in

recording/playback

equalizer amplifier

∗ The reference current

can be set by

connecting a resistor

between this pin and

VEE.

Reference current

setting for built-in Dolby

NR

∗ The reference current

can be set by

connecting a resistor

between this pin and

VEE.

12 MT C1

40 MT C2

14k

0.0V — O — 12

40

300

DC cut capacitance

300

–5–

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