Design tool
CIRCUIT060088
Transimpedance amplifier (TIA) microphone amplifier circuit
CIRCUIT060088
Overview
This circuit uses an op amp in a transimpedance amplifier configuration to convert the output current from an electret capsule microphone into an output voltage. The common mode voltage of this circuit is constant and set to mid–supply eliminating any input–stage cross over distortion.
Features
- Input pressure (Max) = 1000 dB SPL(2Pa)
- Output voltage (Max) = 1.228 Vrms
- Supply:
- Vcc = 5 V
- Vee = 0 V
- Frequency response deviation @ 20Hz = -0.5 dB
- Frequency response deviation @ 20kHz = -0.1 dB
Get started
- Read the circuit design
- Download the model
Downloads
Supported products & hardware
General-purpose op amps
Precision op amps (Vos<1mV)
Technical documentation
= Top documentation selected by TI
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View all 2
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Circuit design | TIA microphone amplifier circuit | 30 Dec 2018 | |
| User guide | Single-Supply Electret Microphone Preamplifier Reference Design | 02 Feb 2015 |
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