Ultralow Noise Microphone
Data Sheet
FEATURES
Ultralow Noise Microphone with Bottom Port and PDM Digital Output ADMP521
FUNCTIONAL BLOCK DIAGRAM
...
Description
Data Sheet
FEATURES
Ultralow Noise Microphone with Bottom Port and PDM Digital Output ADMP521
FUNCTIONAL BLOCK DIAGRAM
ADMP521
ADC PDM MODULATOR CLK DATA
Small and thin 4 mm × 3 mm × 1 mm surface-mount package Omnidirectional response Very high SNR: 65 dBA Sensitivity of −26 dBFS Extended frequency response from 100 Hz to 16 kHz Low current consumption: 900 µA Sleep mode for extended battery life, <1 µA consumption 120 dB maximum SPL High PSR of −80 dBFS Fourth-order Σ-Δ modulator Digital PDM output Compatible with Sn/Pb and Pb-free solder processes RoHS/WEEE compliant
POWER MANAGEMENT
CHANNEL SELECT
L/R SELECT
GND
VDD
Figure 1.
APPLICATIONS
Smartphones and feature phones Tablet computers Teleconferencing systems Digital still and video cameras Bluetooth headsets Notebook PCs Security and surveillance
10141-001
BOTTOM
TOP
Figure 2. Isometric Views of ADMP521 Microphone Package
http://www.DataSheet4U.net/
GENERAL DESCRIPTION
The ADMP5211 is a high performance, ultralow noise, low power, digital output, bottom-ported omnidirectional MEMS microphone. The ADMP521 consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order sigma-delta (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 using a single clock. The ADMP521 is function and pin compatible with the ADMP421 microphone, providing an easy upgrade path. The ADMP521 has...
Similar Datasheet