Analog Devices: EVAL-ADMP521Z Evaluation Board for the ADMP521 Ultra-Low Noise Microphone

atomar — Sun, 27 Oct 2013 05:49:44 GMT

Current Revision posted to Documents by atomar on 10/27/2013 5:49:44 AM

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Kit Overview

The Analog Devices EVAL-ADMP521ZEVAL-ADMP521Z is a simple evaluation board that allows quick evaluation of the performance of the ADMP521ADMP521 bottom port, digital output, omnidirectional microphone. The EVAL-ADMP521Z has a dual-row, 12-pin, 0.1-inch spaced header for access to all microphone pins. All signals are connected to the row of pins along the edge of the board. The pins on the inner row are not connected to any signals.

The EVAL-ADMP521ZEVAL-ADMP521Z is designed to plug directly into either row of Connector J6 on the Analog Devices, Inc., EVAL-ADAU1761ZEVAL-ADAU1761Z evaluation board. When these two boards are connected, the EVAL-ADMP521Z board should extend off the left edge of the EVAL-ADAU1761ZEVAL-ADAU1761Z board. The dimensions of the EVAL-ADMP521ZEVAL-ADMP521Z are 13 mm × 18 mm.

The ADMP521ADMP521 is a high performance, ultra low 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 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.

Key Applications: Smartphones and feature phones, Tablet computers, Teleconferencing systems, Digital still & video cameras, Bluetooth headsets, Notebook PCs, Security and surveillance

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Technical Documents

Learning Center

Type	Description
User Guide	ADI: User Guide (UG-335) for EVAL-ADMP521Z Bottom Port Digital Output MEMS Microphone Evaluation Board
User Guide	ADI: User Guide (UG-326) for EVAL-ADMP521Z-FLEX Bottom-Ported, Digital Output, MEMS Microphone Evaluation Board
Datasheet	ADI: Datasheet for ADMP521 Ultralow Noise Microphone with Bottom Port and PDM Digital Output (Rev A)
Application Note	ADI: Application Note (AN-1140) for Microphone Array Beamforming
Application Note	ADI: Application Note (AN-1124) for Recommendations for Sealing ADI Bottom-Port MEMS Microphones from Dust and Liquid Ingress
Application Note	ADI: Application Note (AN-1112) for Microphone Specifications Explained
Application Note	ADI: Application Note (AN-1068) for Reflow Soldering of the MEMS Microphone
Application Note	ADI: Application Note (AN-1003) for Recommendations for Mounting and Connecting Analog Devices, Inc., Bottom-Ported MEMS Microphones

Design Elements

Type	Description
CAD Model	ADI: CAD Model for ADMP521ACEZ-RL (BXL File format)
Simulation Model	ADI: IBIS Model for ADMP521
Application Library	ADI: Application Library for Microphone Beamforming Simulation Tool (32-bit)
Application Library	ADI: Application Library for Microphone Beamforming Simulation Tool (64-bit)

Video

Kit Features

Key Features for ADMP521ADMP521 Ultra-Low Noise Microphone are as below:

Small and thin 3 mm × 4 mm × 1 mm surface-mount package
Omnidirectional response
Very High SNR of 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 S-Σ modulator
Digital PDM output
Compatible with Sn/Pb and Pb-free solder processes

Kit Contents

The Analog Devices EVAL-ADMP521ZEVAL-ADMP521Z is supplied with below contents:

Evaluation Board

Tags: admp521z, analog-devices, eval-admp521z