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Low Parts Compression Amplifier
GB512/LD512 DATA SHEET
FEATURES • 44 dB typical preamplifier gain • 14 dB typical output stage gain • compression function ratio 1:1 to 2:1 to ∞:1 • automatic setting of transducer current • operation down to 1.
1 VDC • greater than 40 dB volume control range
DESCRIPTION The GB512 and LD512 are 8 pin stand-alone input compression amplifiers requiring minimal external parts.
Each consists of a voltage
regulator for the electret microphone providing a high power supply rejection ratio (PSRR), a compression stage which has a 2:1 compression ratio, and an auto-biasing, class A, voltage drive output stage.
The auto-bias output stage can drive ...