The T4078 is an analog MEMS microphone with very high dynamic range and a low-power AlwaysOn mode. The T4078 includes a MEMS microphone element, an impedance converter, and an output amplifier.
This microphone features a low-power mode, which is active when the supply voltage is <1.9V. In this mode, the T4078 operates with max. 85 μA
Other specifications in high performance mode include 135 dB SPL acoustic overload point, tight ±1 dB sensitivity tolerance and 66 dB(A) SNR.
The T4078 is available in a very small 3.35 mm × 2.5 mm × 0.98 mm bottom port surface-mount package.
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