參數(shù)資料
型號： S1L9223B02-T0R0
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)： 22/36頁
文件大?。?/td> 971K
代理商： S1L9223B02-T0R0
S1L9223B01
RF AMP & SERVO SIGNAL PROCESSOR
22
APC (AUTO POWER CONTROL) CIRCUIT
The laser diode has large negative temperature characteristic in its optical output when driven with a constant
current on laser diode. Therefore, the output on processing monitor photo diode, must be a controlled current for
getting regular output power, thus the APC (Auto Power Control) circuit is composed.
Figure 8. APC Circuit
AGC STABILITY CIRCUIT
The AGC block is the function used to maintain the constant level of RF peak to peak voltage. After the operation of
RF envelop detection and comparing with reference voltage, RFO level is kept stable in 1Vp-p, and input to EFM
Slice.
Figure 9. AGC Block
69
PD
70
-
+
LD
-
+
43.5K
150K
5.5K
150K
150K
PN (From MICOM command)
300K
LDON
0.75K
(From MICOM command)
1.25V
75
VCA
EQUALIZE
78
76
IRF
EQC
EQO
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