ADVANCED
SP8127N
High Speed Differential APC Amplifier
FEATURES
• Dual wavelength 650 and 780nm
• 100 MHz Bandwidth
• 300 V/µs Slew Rate
• 5 ns Setting Time
• 10 mV Differential Output Offset Voltage
• 25 mV/oC Output Offset Voltage Drift
• -6/+6 dB External Gain Adjust
• Small 8-pin OPLGA package
Vcc
1
8 Vout (+)
Gain 2 SP8127N 7 Vout (–)
Rc
3
8-Pin
6 Rg2
GND
4
OPLGA
5 Rg1
APPLICATION
• CD-R, and CD-RW
• DVD+/-R, DVD+/-RW, and DVD-RAM
GENERAL DESCRIPTION
The SP8127N is a high-speed, differential output APC amplifier that integrates the photodiode
and adjustable gain block on one chip. Independent gain control allows individual adjustment for
780mn and 650nm wavelength operation, as found in CD/DVD optical storage drives. This allows the
user to control the laser power of the system in high-speed DVD+/-RW, DVD-RAM and CD-RW
systems. The wide 2V output swing also allows better system performance, through improved
dynamic range.
Rev 0.4 06/29/04. SP8127N High Speed Differential APC Amplifier
Copyright 2003 Sipex Corporation
SIPEX RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET. CALL FOR UPDATES: 1-978-667-8700.
SIPEX CONFIDENTIAL, PRELIMINARY & PROPRIETARY. DO NOT DISTRIBUTE OR
COPY
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