ADMP522
ObsoleteUltralow Noise, Low Sensitivity Tolerance PDM Digital Microphone
Overview
- ±1 dB sensitivity tolerance
- Small and thin 4 mm × 3 mm ×
1 mm surface-mount package - Omnidirectional response
- Very high SNR of 65 dBA
- Sensitivity of −26 dBFS
- Extended frequency response from 75 Hz to >20 kHz
- Low current consumption of
800 µA
- Sleep mode for extended battery life, <2 µA consumption
- Acoustic overload point of 116 dB SPL
- High PSR of −83 dBFS
- Fourth-order Σ-Δ modulator
- Digital PDM output
- Compatible with Sn/Pb and
Pb-free solder processes - RoHS/WEEE compliant
Analog Devices has sold its MEMS Microphone product line to InvenSense.
Please visit the InvenSense ADMP522 product page for all technical support and sales information.
The ADMP522 is a high performance, ultralow noise, low power, digital output, bottom-ported omnidirectional MEMS microphone. The ADMP522 has a sensitivity tolerance of ±1 dB from part to part, making it ideal for microphone array and beamforming applications.
The ADMP522 consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order Σ Δ modulator. The digital interface enables the pulse density modulated (PDM) output of two microphones to be time-multiplexed on a single data line using a single clock. The ADMP522 is function-and pin-compatible with the ADMP521 and ADMP421 microphones, providing an easy upgrade path.
The ADMP522 has a very high signal-to-noise ratio (SNR) and common sensitivity of −26 dBFS, making it an excellent choice for far-field applications. The ADMP522 has an extended wideband frequency response, resulting in natural sound with high intelligibility. Low current consumption and a sleep mode with less than 2 µA current consumption enables long battery life for portable applications.
The ADMP522 is available in a thin 4 mm × 3 mm × 1 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation.
Applications
- Smartphones and feature phones
- Microphone arrays
- Tablet computers
- Teleconferencing systems
- Digital still and video cameras
- Bluetooth headsets
- Notebook PCs
- Security and surveillance
Documentation
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareEvaluation Kits
ADMP522 FLEX Evaluation Board