ADVANCED

SP8127N

Rev 0.4 06/29/04. SP8127N High Speed Differential APC Amplifier

Copyright 2003 Sipex Corporation

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Vcc

Gain

Rc

GND

Vout (+)

Vout (–)

Rg2

Rg1

SP8127N

8-Pin

OPLGA

FEATURES

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Dual wavelength 650 and 780nm

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100 MHz Bandwidth

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300 V/µs Slew Rate

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5 ns Setting Time

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10 mV Differential Output Offset Voltage

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25 mV/

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-6/+6 dB External Gain Adjust

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Small 8-pin OPLGA package

APPLICATION

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CD-R, and CD-RW

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.

High Speed Differential APC Amplifier