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Data Sheet
Omnidirectional Microphone with Bottom Port and Digital Output ADMP421
FEATURES
GENERAL DESCRIPTION
Small and thin 3 mm × 4 mm × 1 mm surface-mount package
The ADMP421 is a high performance, low power, digital output
High SNR of 61 dBA
bottom-ported omnidirectional MEMS microphone. The
High sensitivity of −26 dBFS
ADMP421 consists of a MEMS microphone element and an
Flat frequency response from 100 Hz to 15 kHz
impedance converter amplifier followed by a fourth-order Σ-Δ
Low current consumption: <650 µA
modulator.
ADMP421 Datasheet
