參數(shù)資料
型號: S1L9223B02
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: RF AMP & SERVO SIGNAL PROCESSOR
中文描述: 射頻放大器
文件頁數(shù): 19/36頁
文件大?。?/td> 971K
代理商: S1L9223B02
RF AMP & SERVO SIGNAL PROCESSOR
S1L9223B01
19
TRACKING ERROR AMP
The optical currents detected from the side photo diode (E and F) pf pick-up are input to the E and F pin and
converted into voltage signals by E I-V and F I-V amp. The output of tracking error amp generates the difference
between E I-V AMP and F I-V AMP voltage output.
The E-F balance can be adjusted by modifying the gain of E I-V AMP, and the tracking gain can be adjusted
automatically by controlling the peak voltage at pin TE2 by MICOM program.
Figure 2. Focus Error Amplifier Circuit
Figure 3. Tracking Error Amplifier Circuit
63
-
+
59
-
+
-
+
sev-stopb
FEBIAS
sev-stop
<5 Bit Counter>
32K
32K
3K
X1
X2
X4
X8
X16
164K
FE1
160K
4K
fcmpo
vc
FEBIAS
fe-stopb
SW1
VB >
VA >
1.
2.
VA and VB refer to output signal of PD1 and PD2 I/V amp.
sev-stopb,sev-stop,fe-stopb and fcmpo are internal signals
67
-
+
68
79
I-V AMP
I-V AMP
54
55
Balance
Window Comp
F
E
EI
GAIGAIN < 3 : 0 >
BAL < 4 : 0 >
TE1
LPFT
1
7
2
1
5
2
1
1
7
3
1
-
53
TE2
Gain
Window Comp
TRCNT
31
30
ISTAT
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