T5837 | TDK

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Bottom Port PDM Digital Output Multi‑Mode Microphone

OVERVIEW

The T5837 is a low noise, high AOP digital Pulse Density Modulation (PDM) microphone using a fifth-order Σ‑Δ modulator.

Spec	High Quality Mode	Low‑Power Mode	Ultrasonic Mode
Sensitivity	-37 dB FS ±1 dB	-21 dB FS ±1 dB	-37 dB FS ±1 dB
SNR	68 dBA	65.5 dBA	68 dBA
Current	330 µA	130 µA	400 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

T5837

Featured Markets

Smartphones
Smart Speakers
Headsets
Voice-Enabled TV Remotes
Smart TVs & Set Top Boxes
Wearables

Product	Package Size	Output	Port Location	SNR (dBA)	AOP (dB SPL)	Sensitivity (dbfs)	LF Cutoff (Hz)	Status	Purchase
T5837	3.5 × 2.65 × 0.98	PDM	Bottom	68	133	-37	28	Production

T5837 Features & Benefits

Industry standard High Quality Mode sensitivity of -37 dBFS and Low-Power Mode sensitivity of -21 dBFS
High SNR and AOP in all operational modes

Low power consumption in all modes; ~50 – 70% lower than competitors

Documentation & Resources

Datasheet
T5837 Datasheet

App Notes
AN-000111 – Selecting PDM Microphone Clock Frequencies and Decimation Ratios
AN-0078 – High-Performance Digital MEMS Microphone Simple Interface to SigmaDSP Audio Codec
AN-100 – MEMS Microphone Handling and Assembly Guide
AN-1003 – Recommendations for Mounting and Connecting InvenSense MEMS Microphones

Hardware Reference Design
AN-000048 – PDM Digital Output MEMS Microphone Flex Evaluation Board User Guide
AN-000361 – T5837 Flex EVB User Guide