T3902 Datasheet (TDK)

T3902, Microphone

The T3902 is a low‐power, low‐noise digital MEMS microphone in a small package.

The T3902 consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth‐order Σ‐Δ modulator.

The pulse density modulated (PDM) interface allows two microphones to be time multiplexed on

T3902 Features

* SPEC Sensitivity SNR Current AOP Clock LOW‐POWER MODE

* 26 dB FS ±1 dB 63 dBA 185 µA 120 dB SPL 400

* 800 kHz STANDARD MODE

* 26 dB FS ±1 dB 64.5 dBA 430 µA 120 dB SPL 1.0

* 3.3 MHz HIGH PERFORMANCE MODE

* 32 dB FS ±1 dB 64 dBA 650 µA 126 dB SPL 4.1