The T3902 is a low‐power, low‐noise digital MEMS microphone with a Pulse Density Modulation (PDM) interface. It consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth‐order Σ-Δ modulator. The device features multiple modes of operation including High Performance, Low Power (AlwaysOn), and Sleep Mode. It is designed for high Acoustic Overload Point (AOP) applications, providing clear audio capture in loud environments while maintaining a high signal-to-noise ratio.
| RoHS |
Compliant |
| Dimensions |
3.5 x 2.65 x 0.98mm |
| Sensitivity |
-32dBV FS |
| Frequency Response |
36 to 20,000Hz |
| Sleep Mode Current |
12µA |
| Supply Voltage (Vdd) |
1.65 to 1.98V |
| Signal-to-Noise Ratio (SNR) |
63dBA |
| Power Supply Rejection (PSR) |
-97dB FS |
| Acoustic Overload Point (AOP) |
126dB SPL |