[消费电子]

单电源、驻极体麦克风前置放大器参考设计

2015-3-10 15:22:49 30862 单电源麦克风

1 `描述 This ti Precision design details the design process for a preamplifier to be used with electret microphone capsules. It explains the basic construction and operation of an electret microphone and uses an OPA172 to amplify the output of the microphone to common analog line level voltages. 特性 TI Precision Designs: Verified Design Designed for a single 9V battery power supply ~2mA supply current 68dB SNR with Microphone This design is tested and includes theory, component selection, TINA-TI simulation, PCB schematic & layout, bill of materials, and measured results. TIPD181 Schematic.pdf (104.03 KB, 下载次数: 207 ) Single-Supply Electret Microphone Preamplifier Reference Design.pdf (960.86 KB, 下载次数: 243 ) TIPD181 BOM.pdf (94.5 KB, 下载次数: 83 ) ` 6
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