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T3902 - Microphone

General Description

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.

Key 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.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Bottom Port PDM Low‐Power Multi‐Mode Microphone With High AOP Mode T3902 GENERAL DESCRIPTION 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 a data line using a single clock. The T3902 has multiple modes of operation: High Performance, Low Power (AlwaysOn), Standard and Sleep. The T3902 has low power and high SNR in all operational modes. It has 126 dB SPL AOP in High Performance mode, and 120 dB SPL AOP in Standard and Low‐Power modes. The T3902 is available in a small 3.5 × 2.65 × 0.98 mm surface‐mount package.