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®
PRELIMINARY
SP8034A
250 V/µs APC Amplifier with Integrated Photodiode and Gain Adjust Capability
FEATURES ■ Slew Rate of 250V/us ■ 7ns Settling Time to 1% for 1.5V Step ■ 10 mV Output Offset Voltage ■ 20uV/°C Output Offset Drift ■ Digital Gain Select ■ +/- 6 dB External Gain Adjust
VCC GAIN SEL RGCOM GND
1 2 3 4
SP8034A
8 Pin COB
8 7 6 5
VOUT VREF RGAIN2 RGAIN1
DESCRIPTION The SP8034A represents the next generation APC amplifier with integrated photodetector. This device monitors the light intensity of the laser diode in CD-R, CD-RW, DVD-R, DVD-RW and DVD-RAM assemblies by sensing the laser power with an integrated photodiode. The amplified signal from the APC contains the laser power information.