Sharp CD-C462 - Page 28

CD-C462/C462C
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IC3 VHiM56748FP-1: Focus/Tracking/Spin/Slide Driver (M56748FP)
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Vref-in
Vref-in
Vref-out
NC
Gain1
Vctl1(–)
VM1(–)
VM1(+)
VM2(+)
VM2(–)
Vctl2(–)
Gain2
NC
Vcc
Reg5V
OP1
Vref-out
TSD
Stand
by
Gain4
VM4(–)
Pre-driver Pre-driver
VM4(+)
Gain1
5K
15K
15K
2K
23K
23K
5K
10K 10K 10K 10K
VM1(–)
VM1(+)
OP1
PA
PA
OP1
PA
PA
VM3(–)
Vctl3(out)
Vctl3(–)
Vctl3(+)
Vcc
Vcc
Vcc
GND
GND
GND
GND
GND
GND
GND
GND
GND
RegbaseReg5V
Pre-driver Pre-driver
VM3(+)
Gain2
NC
5K
1.23V
10K 10K 10K
10K
10K
VM2(–)
VM2(+)
OP1
OP1
PA
PA
OP1
PA
PA

Standby
SS.GND
Standby
Gain4
Vctl4(–)
VM4(–)
VM4(+)
VM3(+)
VM3(–)
Vctl3(out)
Vctl3(–)
Vctl3(+)
Vcc
Regbase
GND
Figure 28 BLOCK DIAGRAM OF IC