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SP8127N

High Speed Differential APC Amplifier

Signal Processing Technologies 

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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