Single-Supply: Electret Microphone Preamplifier Reference Design
Description
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.
Features
- TI Precision Designs: Verified DesignDesigned for a single 9V battery power supply~2mA supply current68dB SNR with MicrophoneThis design is tested and includes theory: component selection: TINA-TI simulation: PCB schematic & layout: bill of materials: and measured results.
Applications
- Professional microphones & wireless systems
- Piano
- keyboard & synthesizer
- Digital stethoscope
Product Categories
- Amplifiers
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| Download the bill of materials for TIPD181 | Download |
Design File
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Download the design file for TIPD181Test Data
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Download the test file for TIPD181| Title | Updated | Type | Size (KB) | |
|---|---|---|---|---|
| TIPD181 BOM | 18 Feb 2015 | 94 | ||
| TIPD181 Schematic | 18 Feb 2015 | 104 |