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12dB External Gain Adjust Range
V
CC
GAIN
R
COM
GND
1
2
3
4
SP8024/25/26
8 Pin COB
8
7
6
5
V
OUT
+
V
OUT
-
R
GAIN2
R
GAIN1
DESCRIPTION
The SP8024, SP8025, and SP8026 are high-speed, differential output APC amplifiers that
integrate the photodiode and adjustable gain block on one chip. This allows the user to control
the laser power of the system in high-speed DVDRW, DVDRAM and CDRW systems. The wide
2V output swing also allows better system performance.
FUNCTIONAL DIAGRAM
GAIN
V
CC
GND
31
TIA
2463
Buffer
V
OUT
+
1V
P-P
50pF
1k
850
Rf1
Rf2
850
31
(Flexible Flat Cable)
V
OUT
-
Buffer
2463
1V
P-P
50pF
1k
R
GCOM
R
G1
R
GAIN1
R
G2
R
GAIN2
Rev. 6/02/03
SP8024, 25, 26 200V/碌s Integrated APC Amplifier
漏 Copyright 2003 Sipex Corporation
1