资料介绍
ADMP421Preliminary Technical Data
FEATURES
Small and thin 3 mm × 4 mm × 1 mm surface-mount package High SNR of 60.5 dBA High sensitivity of 26 dBFS Flat frequency response from 100 Hz to over 12 kHz Low current consumption: <650 μA High PSRR of 80 dBFS Fourth-order Σ-Δ modulator Digital PDM output Compatible with Sn/Pb and Pb-free solder processes RoHS/WEEE compliant
Omnidirectional Microphone with Bottom Port and Digital Output ADMP421
GENERAL DESCRIPTION
The ADMP421 is a low cost, low power, digital output bottom ported omnidirectional MEMS microphone. The ADMP421 consists of a MEMS microphone element, an output amplifier, and a fourth-order Σ-Δ modulator. The digital interface allows for the pulse density modulated (PDM) output of two microphones to be time multiplexed on a single data line u
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