Analog Devices Inc. ADZS-AUDIO-EX3

Overview

ADZS-AUDIO-EX3 from Analog Devices is an EZ-Extender® evaluation board designed to plug into the Expansion Interface III (EI3) of ADSP-BF609 EZ-KIT Lite® or compatible Blackfin® evaluation systems. It provides audio interface expansion via stereo codec (ADAU1761), I²S/TDM digital audio connectivity, and configurable analog input/output paths for embedded audio prototyping.

For engineers reviewing the ADZS-AUDIO-EX3 datasheet, ADZS-AUDIO-EX3 pinout, ADZS-AUDIO-EX3 application, or ADZS-AUDIO-EX3 equivalent, this page delivers verified hardware architecture, supported processor interfaces (PPI, SPI, TWI, GPIO), on-board codec configuration options, and integration guidance for real-time audio signal chain development.

Technical Context

The ADZS-AUDIO-EX3 implements a dual-path audio interface: one path routes analog microphone inputs through programmable gain amplifiers (PGAs) and anti-aliasing filters to the ADAU1761's 24-bit sigma-delta ADCs; the other path delivers line-level analog outputs from the codec's DACs with low-distortion headphone drivers. All digital audio transport uses I²S or TDM over dedicated EI3 signals.

Configuration is managed via software-controlled I²C switches (Microchip MCP23008) that route clock sources (MCLK, BCLK, LRCLK), select between master/slave audio modes, enable/disable analog input biasing, and configure PGA gain stages. The board draws power solely from the host EZ-KIT Lite via EI3 - no external supply required.

Key Specifications

Availability

ADZS-AUDIO-EX3 is available at Aetrix Electronics and suitable for embedded audio development, voice interface prototyping, and industrial sound monitoring applications requiring stable component supply and full evaluation ecosystem support.

Supply support for ADZS-AUDIO-EX3 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and real-time control.

The ADZS-AUDIO-EX3 belongs to Analog Devices' EZ-Extender® family - purpose-built daughter boards that extend EZ-KIT Lite evaluation systems with application-specific peripherals like audio, LCD, sensor, or motor control interfaces.

FAQ

What is the ADZS-AUDIO-EX3 used for?

The ADZS-AUDIO-EX3 is an evaluation extender board that adds high-fidelity stereo audio I/O capability to Analog Devices Blackfin® EZ-KIT Lite platforms. It enables rapid development of voice capture, playback, beamforming, and audio analytics applications using the ADAU1761 codec, configurable analog front-end, and software-controlled routing - all without modifying the host evaluation board.

Does the ADZS-AUDIO-EX3 require an external power supply?

No. The ADZS-AUDIO-EX3 draws all operating power (3.3 V and 5 V) directly from the host EZ-KIT Lite or EZ-Board via the Expansion Interface III (EI3) connector. On-board regulators (ADP1715, ADP1613) provide isolated, low-noise analog and digital supplies - eliminating need for external adapters or bench supplies during evaluation.

Which processors and evaluation boards support the ADZS-AUDIO-EX3?

The ADZS-AUDIO-EX3 is designed exclusively for use with Analog Devices EZ-KIT Lite® or EZ-Board® evaluation systems equipped with Expansion Interface III (EI3), including the ADSP-BF609 EZ-KIT Lite. It is not compatible with non-EI3 platforms or third-party development boards - mechanical and signal mapping are specific to ADI's EI3 standard.

How is audio configuration controlled on the ADZS-AUDIO-EX3?

Audio configuration on the ADZS-AUDIO-EX3 is managed entirely through software-controlled I²C switches (MCP23008) and register writes to the ADAU1761 codec. This includes PGA gain selection, input bias enable/disable, master/slave clock mode, I²S vs. TDM format, and analog output driver activation - all programmable from CrossCore Embedded Studio without physical jumpers or soldering.

Is the ADZS-AUDIO-EX3 CE certified?

Yes. The ADZS-AUDIO-EX3 complies with the essential requirements of the European EMC Directive 2014/30/EU (replacing 89/336/EEC) and carries the CE marking. It is intended for laboratory evaluation use only and must not be integrated into end-user consumer products without additional system-level compliance validation.