This schematic block features the ICS-40720, a high-performance analog MEMS microphone from TDK-InvenSense designed for clear, low-noise acoustic capture in voice, environmental monitoring, and general audio applications. As an omnidirectional microphone with excellent sensitivity and a low noise floor, the ICS-40720 provides a clean analog output suitable for direct interface to preamplifiers, ADCs, or audio front-ends.
Housed in a compact top-port MEMS package, this breakout-style module exposes the microphone output, bias pin, and ground connections in a clean layout optimized for low-noise signal routing. With a 67 dB SNR, −38 dBV/Pa sensitivity, and a 100 Hz–10 kHz frequency response, the ICS-40720 delivers reliable performance in both near-field and far-field sound capture scenarios.
The ICS-40xxx MEMS microphone family has earned broad adoption in consumer and embedded systems due to its durability, stable performance, and long production availability.
Key Features:
- ICS-40720 analog MEMS microphone, omnidirectional
- 67 dB signal-to-noise ratio (SNR)
- −38 dBV/Pa typical sensitivity
- Wide 100 Hz–10 kHz frequency response
- Stable analog output compatible with op-amps, ADCs, and audio front-ends
- Low power consumption for battery-powered systems
- Compact top-port MEMS package for easy mechanical integration
- Breakout designed for low-noise routing and fast prototyping
Typical Applications:
- Voice recognition and audio detection systems
- Environmental sound monitoring and noise sensing
- IoT audio nodes and smart devices
- Robotics and sound localization
- Portable electronics and handheld instruments
- General-purpose acoustic capture in embedded designs
By integrating this Quickboards schematic block, engineers can rapidly prototype analog audio input stages, reduce design complexity, and rely on a proven MEMS microphone architecture well-suited for modern embedded audio systems.




