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ICS-40638

High‑AOP Analog MEMS Microphone with Differential Output

The ICS-40638 is an analog MEMS microphone with very high dynamic range and capable of operation up to 105°C. The ICS‑40638 includes a MEMS microphone element, an impedance converter, and a differential output amplifier.

Other high-performance specifications include 138 dB SPL acoustic overload point, tight ±1 dB sensitivity tolerance and enhanced immunity to both radiated and conducted RF interference.

The ICS-40638 is available in a small 3.50 × 2.65 × 0.98 mm bottom port surface-mount package.

ICS-40638

ICS-40638 Datasheet

Target Markets

Automotive
Still and video cameras
IoT devices

Product Details

Product	Package Size	Output	Port Location	SNR (dBA)	AOP (dB SPL)	Sensitivity (dbfs)	LF Cutoff (Hz)	Status	Purchase
ICS-40638	3.5 × 2.65 × 0.98	Analog	Bottom	63	138		35	Production

Features & Benefits

Differential non-inverting analog output
−43 dBV sensitivity (differential)
±1 dB sensitivity tolerance
Extended frequency response from 35 Hz to 20 kHz
Enhanced RF immunity

−81 dB PSRR
50 × 2.65 × 0.98 mm surface-mount package
Compatible with Sn/Pb and Pb-free solder processes
RoHS/WEEE compliant

Documentation & Resources

Datasheet / Product Brief	Version	Updated	Download
DS-000281 – ICS-40638 Datasheet	1.1	2020-04-15

App Notes & User Guides	Version	Updated
AN-100 – MEMS Microphone Handling and Assembly Guide	1.5	2017-07-12
AN-1112 – Microphone Specifications Explained	1.1	2016-06-15
AN-1140 – Microphone Array Beamforming	1.0	2013-12-31
AN-1003 – Recommendations for Mounting and Connecting InvenSense MEMS Microphones	1.0	2013-12-31
AN-000013 – Analog Output MEMS Microphone Flex Evaluation Board User Guide	1.5	2017-06-12