HA12220 반도체 회로 부품 판매점
CD-ROM Drive Head Amplifier IC
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 Hitachi Semiconductor |
HA12220F
CD-ROM Drive Head Amplifier IC
ADE-207-230 (Z)
Target Specification
1st. Edition
April 1997
Functions
• RF amplifier (Built-in equalizer changing circuit)
• Focus error amplifier (fc = 60kHz Typ)
• Tracking error amplifier (Built-in cut-off frequency changing circuit fc = 30kHz, 60kHz, 100kHz,
200kHz Typ)
• FOK detection circuit (Built-in Vth changing circuit)
• Mirror detection circuit
• Defect detection circuit
• APC amplifier
• RFAGC amplifier
Features
• Built-in variable resistors (+14 to –16% 2% steps) for adjusting tracking error EF balance
• Built-in variable resistors (–8 to +8dB 4dB steps) for rough adjusting tracking gain
• Built-in variable resistors (–8 to +8dB 4dB steps) for rough adjusting focus gain
• Built-in focus offset insertion circuit (–0.7 to +0.7V in 0.1V steps)
• RF amplifier frequency characteristics 30MHz (–3dB) in case of peaking off
• High-speed access support (The mirror circuit internal time constant can be switched between normal,
4× and 8× modes.)
• Support for CD-RW playback
• Few external components
• Available to set the stand-by mode
• FP-28TB package
HA12220F
Block Diagram
0.1µ
28 27 26
RF1 VCC BYPS
BIAS
RF2
1
RF3
2
RF4
3
EQ
–
+
RFS
10µ
25 GND
VCF
+
–
VCB
HD49250
1µ 0.1µ
0.015µ
24 23
22
21
RFC AGCF AGCO
DFH
AGC
Gain changing
DEFECT
DFT
20
HD49250
–
+
FSA
FOK
+
–
MIRH
19
0.033µ
MIRR
MIRR
18
HD49250
–
+
FE
FVR2
+FA2
–
Gain=12dB Typ
FVR
+FA
–
Offset
FOK
17
HD49250
TR1
4
TR2
5
+TR1
–
BAL
+TR2
–
TVR
+TE
–
TLPF +
–
TVR2
+TA
–
TVR
Gain=8dB Typ
XLT
IIL 16
HD49250
MD
6
APC
BUF
Interface
DATA
15
HD49250
LD TE
78
FE
9
CI CO VC
10 GND 11
12
µ-COM
HD49250 HD49250 ADC
+
µ-COM 100µ
DAC
XRST CLK
13 14
µ-COM HD49250
Rev.1, Apr. 1997, page 2 of 20
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PDF 파일 내의 페이지 : 총 20 페이지
제조업체: Hitachi Semiconductor
( hitachi )
HA12220 amplifier
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
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