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Part: HA12220F
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
Description: Cd-rom Drive Head Amplifier ic
Company: Hitachi Semiconductor (acquired by Renesas)
Datasheet: Download HA12220F datasheet File size : 423 kB
Request For quote: Find where to buy HA12220F
Datasheet text preview:
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 RF1 27 VCC BIAS RF2 1 + EQ + MIRH 19 RFS + FSA FOK + MIRR 18 HD49250 VCB 26 BYPS 10µ GND VCF 1µ 23 RFC AGCF 0.1µ HD49250 22 AGCO 21 DFH DEFECT DFT 20 HD49250 0.015µ
25
24
AGC Gain changing
RF3 2 RF4 3
GND
FE FVR2
+ FVR Offset
FA
FOK 17 HD49250
TR1 4
+
TR1 TVR +
TE TLPF + TVR2
+
TA
BAL TR2 5 + TR2 TVR
IIL Gain=8dB Typ
XLT 16 HD49250
MD 6 APC BUF
DATA 15 HD49250
Interface
LD 7
+
TE 8
FE 9
CI 10 µ-COM ADC
GND
CO 11
VC 12
CLK XRST 13 14
HD49250 HD49250
+ µ-COM 100µ DAC
µ-COM HD49250
Rev.1, Apr. 1997, page 2 of 20
GND
+
+
FA2
Gain=12dB Typ
+
+
0.033µ
MIRR
+
HA12220F
Pin Description and Equivalent Circuit
Pin No. 1 Pin Name RF2
28
12k 120k 160k 12k 120k 160k 12k 120k 160k 12k 120k 160k
Equivalent Circuit
4k
Function RF FE FSA amplifier input2
5p
600k
1
10p 160k 160k
2
3
10p
2 3 28 4
RF3 RF4 RF1 TR1
4k 1.2p 80k 40k 32k 11.4k
RF FE FSA amplifier input3 RF FE FSA amplifier input4 RF FE FSA amplifier input1 TR1 amplifier input
5
TR2
4k 1.2p 80k 40k 32k 11.4k
TR2 amplifier input
6
MD
4k
APC amplifier input
7
LD
1k 150k
APC amplifier output
8
TE
Tracking error signal output
40k
9
FE
Focus error signal output
Rev.1, Apr. 1997, page 3 of 20
Others parts begin by ha
HA-1 HA-2 HA-3 HA-4 HA-5 HA-6 HA-7 HA-8 HA-9 HA-10
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