HA12220F Datasheet, PDF (5/20 Pages) Hitachi Semiconductor – CD-ROM Drive Head Amplifier IC

Pin Description and Equivalent Circuit (cont)
Pin No. Pin Name Equivalent Circuit
21
DFH
22
AGCO
23
AGCF
24
RFC
25
VCF
26
BYPS
27
V
—
CC
5k
5k
100k
4k
2k
4k
VCC
40k _4k
40k
GND
V_CC
20k
HA12220F
Function
Defect envelope hold signal
output
AGC amplifier output
Capacitor connection for AGC
Capacitor connection for AGC
Capacitor connection for
reference voltage ripple filter
Capacitor connection for ripple
filter
V
CC
Rev.1, Apr. 1997, page 5 of 20