THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS DS 3301 -1 SL6270C GAIN CONTROLLED MICROPHONE PREAMPLIFIER/VOGAD The SL6270 is a silicon integrated circuit combining the functions of audio amplifier and voice operated gain adjusting device (VOGAD).
It is designed to accept signals from a low sensitivity microphone and to provide an essentially constant output signal for a 50dB range of input.
The dynamic range, attack and decay times are controlled by external components.
MAIN AMP OUTPUT MAIN AMP INPUT 7 0V 6 5 PREAMP INPUT PREAMP INPUT 4 3 V CC 8 1 2 PREAMP OUTPUT AGC TIME CONST CM8 Fig.
1 Pin connections, SL6270 - CM (bottom view) FEATURES Constan...

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