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T5838

Bottom Port PDM Digital Output Multi‑Mode Microphone

The T5838 is a low noise, high AOP digital Pulse Density Modulation (PDM) microphone using a fifth-order Σ‑Δ modulator. It also features Acoustic Activity Detect (AAD), a new ultra-low power edge processing feature consuming as low as 20 µA.

Spec	High Quality Mode	Low‑Power Mode	Ultrasonic Mode
Sensitivity	−41 dB FS ±1 dB	−26 dB FS ±1 dB	−41 dB FS ±1 dB
SNR	68 dBA	65 dBA	68 dBA
Current	310 µA	120 µA	500 µA
AOP	133 dB SPL	119 dB SPL	133 dB SPL
Clock	2.0 – 3.7 MHz	400 – 800 kHz	4.2 – 4.8 MHz
L.F. Rolloff	28 Hz
Package	3.5 × 2.65 × 0.98 mm, Bottom Port

T5838

Featured Markets

Smartphones

Smart Speakers

Headsets

Voice-Enabled TV Remotes

Smart TVs & Set Top Boxes

Wearables

Product Details

Product	Package Size	Output	Port Location	SNR (dBA)	AOP (dB SPL)	Sensitivity (dbfs)	LF Cutoff (Hz)	Status	Purchase
T5838	3.5 × 2.65 × 0.98	PDM	Bottom	68	133	-41	28	Production

Features & Benefits

Industry standard High Quality Mode sensitivity of -37 dBFS and Low-Power Mode sensitivity of -21 dBFS
Low power consumption in all modes; ~50 – 70% lower than competitors

High SNR and AOP in all operational modes
Acoustic Activity Detect w/ programmable thresholds & filters with power consumption as low as 20 uA

Documentation & Resources

Datasheet / Product Brief	Version	Updated	Download
DS-000383 – T5838 Datasheet	1.1	2023-04-21

App Notes & User Guides	Version	Updated	Download
AN-100 – MEMS Microphone Handling and Assembly Guide	1.5	2017-07-12
AN-1112 – Microphone Specifications Explained	1.1	2016-06-15
AN-1124 – Recommendations for Sealing InvenSense Bottom-Port MEMS Microphones from Dust and Liquid Ingress	1.0	2014-03-21
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
Low Self Noise: The First Step to High-Performance MEMS Microphone Applications	1.0	2013-12-31
Analog and Digital MEMS Microphone Design Considerations	1.0	2013-12-31
Understanding Microphone Sensitivity	1.0	2013-12-18
AN-000111 – Selecting PDM Microphone Clock Frequencies and Decimation Ratios	1.0	2017-04-03
AN-0078 – High-Performance Digital MEMS Microphone Simple Interface to SigmaDSP Audio Codec	1.0	2014-02-22
AN-000048 – PDM Digital Output MEMS Microphone Flex Evaluation Board User Guide	1.2	2020-06-01
Inter-IC Digital Audio Interfaces	1.0	2013-11-31
AN-000278 – T5838 Flex EVB User Guide	1.2	2022-08-02