TDK InvenSense T3903 Multi-Mode Microphone is a low noise digital MEMS microphone in a small package. This microphone consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order Σ-Δ modulator. The T3903 microphone comes with high quality, low-power (AlwaysOn), and sleep modes of operation. This multi-mode microphone meets a high Signal to Noise Ratio (SNR) in all operational modes. The T3903 microphone also meets 133dB SPL AOP in high-quality mode and 120dB SPL AOP in low-power mode. Applications include smartphones, microphone arrays, tablet computers, and cameras.
3.5mm x 2.65mm x 0.98mm surface-mount package
Extended frequency response from 40Hz to >20kHz
9µA sleep mode
Fourth-order Σ-Δ modulator
Digital Pulse Density Modulation (PDM) output
Compatible with Sn/Pb and Pb-free solder processes
T3903 Block Diagram
Associated Evaluation Board
TDK InvenSense T3903 Evaluation Board
Designed to evaluate T3903 multi-mode microphone with a low noise digital MEMS microphone.