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.

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