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SD-CX1W
– 88 –
IC2 VHiTA2147F/-1:Servo Pre Amp. (TA2147F)
1
VCC
Input
3.3 V power supply terminal.
2
FNI
Input
Main beam amp input terminal.
3
FPI
Input
Main beam amp input terminal.
4
TPI
Input
Sub-beam amp input terminal.
5
TNI
Input
Sub-beam amp input terminal.
6
MDI
Input
Monitor photodiode amplifier input terminal.
7
LDO
Output
Laser diode amp output terminal.
8
SEL
Input
APC circuit ON/OFF signal, LDO terminal control input terminal and bottom/peak
detection frequency switching terminal.
9
TEBC
Input
Tracking error balance adjustment signal input terminal.
• TEBC input voltage.
10
TEN
Input
Tracking error signal generation amp antiphase input terminal.
11
TEO
Output
Tracking error signal generation amp output terminal.
12
RFDC
Output
RF signal peak detection output terminal.
13*
GVSW
Input
AGC, FE, TE amp gain switching terminal.
14
VRO
Output
Reference voltage (VRO) output terminal. • VCC=3.3 V: VRO=1/2 VCC.
15
FEO
Output
Focus error signal generation amp output terminal.
16
FEN
Input
Focus error signal generation amp antiphase input terminal.
17
RFRP
Output
Signal generation amp output terminal for track count.
18
RFRPIN
Input
Signal generation amp input terminal for track count.
19
RFGO
Output
RF signal amplitude adjustment amp output terminal.
20
RFGC
Input
RF amplitude adjustment control signal input terminal. • RFGC input voltage.
21
AGCIN
Input
RF signal amplitude adjustment amp input terminal.
22
RFO
Output
RF signal generation amp output terminal.
23
RFN
Input
RF signal generation amp input terminal.
24
GND
—
GND terminal.
Terminal Name
Pin No.
Input/Output
Function
GND
OFF
Connection to VCC via 1 k
Ω
Hi-z
ON
Control signal output
VCC
ON
Control signal output
SEL
APC circuit
LDO
GND
CD-RW
Hi-z
CD-DA
VCC
CD-CA
GVSW
Mode
80k
20k
15p
240k
80k
20k
40p
40p
180k
180k
60k
60k
3k
3k
20k
20k
20k
40k
40k
10p
15p
13
GVSW
18
RFRP IN
19
RFGO
RFGC
20
21
AGCIN
22
RFO
23
RFN
24
GND
12
RFDC
11
TEO
10
TEN
9
TEB
8
SEL
7
LDO
6
MDI
5
TNI
4
TPI
3
FPI
2
FNI
1
VCC
20k
20k
15k
2k
14k
1k
50k
2k
1.3V
20k
12k
12k
20k
40k
50k
15k
30k
20k
240k
10p
14
VRO
15
FED
16
FEN
17
RFRP
BOTTOM
PEAK
PEAK
x0.5
x2
K
x0.5
x2
1
50
µ
20
µ
60
µ
PIN
SEL
(APC_SW)
TEB
(TE_BAL)
RFGC
(AGC_Gain)
GVSW
(CD/RW)
V
CTRL
V
CC
HiZ
GND
APC ON
APC ON
APC OFF
(LDO=H)
-50%
0%
+50%
+12dB
+6dB
0dB
DA
(0dB)
DA
(0dB)
RW
(+12dB)
Figure 88 BLOCK DIAGRAM OF IC
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Summary of Contents for SD-CX1W(BL)
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