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DSA00349647.pdf
by Information Storage Devices
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® A Winbond Company Applications Note 4A AGC Circuit for ISD4000 Series Devices INTRODUCTION AGC CIRCUIT BLOCK The ISD4000 series is intended to operate with systems that already include
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"Microphone Preamplifier" 1.5V
"Microphone Preamplifier" 1.5V transistor
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block diagram OF CONDENSER MICROPHONE
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