HA12220 데이터 시트보기 (PDF) - Hitachi -> Renesas Electronics

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HA12220

CD-ROM Drive Head Amplifier IC

Hitachi -> Renesas Electronics 

HA12220F

Bias, Reference Voltage

Pin 26 is for a bypass capacitor to eliminate noise from the IC’s internal bias circuits.

Connect a capacitor to pin 25 to remove the ripple component from the reference voltage.

The IC’s internal reference voltage is connected internally.

0.1µ

10µ

27 26

25

GND

VCC BYPS

VCF

40k 40k

BIAS

+

–

VCB

12

Figure 13 Bias, Reference Voltage

Rev.1, Apr. 1997, page 14 of 20

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