The ICS-40300 is a low-noise, high SPL MEMS microphone with extended low frequency response. The ICS-40300 consists of a MEMS microphone element and an impedance converter amplifier. The ICS-40300 low frequency response makes it an excellent choice for applications requiring precise phase matching.
The ICS-40300 is pin compatible with theINMP401 and INMP411 microphones, providing an easy upgrade path. The ICS-40300 has a linear response up to 130 dB SPL. It offers low frequency extension down to 6 Hz, resulting in excellent phase characteristics in the audio range. Low current consumption enables long battery life for portable applications. The ICS-40300 is available in a 4.72 mm × 3.76 mm × 3.5 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation.
| Part # | Market Status | Output | Port Location | SNR | AOP | Sensitivity | Package Size | LF Cutoff |
|---|---|---|---|---|---|---|---|---|
| UNITS: | dBA | dB SPL | dbfs | (mm) | Hz | |||
 ICS-40300 |
Production | Analog | Bottom | 63 | 130 | -45 | 4.72 × 3.76 × 3.5 | 6 |
AN-100 – MEMS Microphone Handling and Assembly Guide
AN-1112 – Microphone Specifications Explained
AN-1124 – Recommendations for Sealing InvenSense Bottom-Port MEMS Microphones from Dust and Liquid Ingress
AN-1140 – Microphone Array Beamforming
AN-1003 – Recommendations for Mounting and Connecting InvenSense MEMS Microphones
AN-0207 – High-Performance Analog MEMS Microphone Simple Interface to SigmaDSP Audio Codec
AN-1165 – Op Amps for MEMS Microphone Preamp Circuits
AN-1181 – Using a MEMS Microphone in a 2-Wire Microphone Circuit
UG-445 – Analog Output MEMS Microphone Flex Evaluation Board User Guide
Low Self Noise: The First Step to High-Performance MEMS Microphone Applications
Analog and Digital MEMS Microphone Design Considerations
Understanding Microphone Sensitivity
