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CD-R, and CD-RW
DVD+/-R, DVD+/-RW, and DVD-RAM
GENERAL DESCRIPTION
The SP8027 represents the next generation in Automatic Power Control (APC) amplifiers designed
specifically for demanding pick-up head applications. Whereas typical APC products exhibit
degradation of bandwidth and slower settling times at higher gain levels, the SP8027 features
constant bandwidth (150MHz) and fast settling times (5ns) across the entire gain adjust range.
With its integrated photo detector, the SP8027 monitors light intensity of the laser diode in CD-R,
CD-RW, DVD+/-R, DVD+/-RW, and DVD-RAM assemblies and converts this light to an output
voltage. The magnitude of this voltage signal corresponds to the laser power intensity and is
subsequently fed back to the laser diode driver to control the laser output power.
The SP8027 on-chip photo detector transforms incident laser light into a proportional current, which
is then converted to a voltage through a trans-impedance amplifier. The SP8027 achieves an
unparalleled level of performance by combining excellent DC stability and low noise with
outstanding AC performance.
The SP8027 is offered with a nominal sensitivity 3600 V/W and is packaged in a 3.0 x 3.5 mm, 8-
lead OPLGA package.
Rev 0.0 11/22/04. SP8027 High Speed Differential APC Amplifier
錚〤opyright
2004 Sipex Corporation
SIPEX RESERVES THE RIGHT TO MAKE CHANGES TO THIS DATASHEET. CALL FOR UPDATES: 1-408-934-7500.
SIPEX CONFIDENTIAL, PRELIMINARY & PROPRIETARY. DO NOT DISTRIBUTE OR
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