Analog Devices Inc. EVAL-AD7764EDZ

Overview

EVAL-AD7764EDZ from Analog Devices is a dedicated evaluation board for the AD7764 24-bit Σ-Δ analog-to-digital converter, supporting full-band digital FIR filtering, 102 dB SNR at 312 kSPS, and differential XLR input interface. It operates with an on-board 4.096 V ADR444 reference and integrates ADP3330-2.5/5 LDOs for clean 2.5 V and 5 V supplies.

For engineers reviewing the EVAL-AD7764EDZ datasheet, EVAL-AD7764EDZ pinout, EVAL-AD7764EDZ application, or EVAL-AD7764EDZ equivalent, this board enables rapid validation of high-fidelity data acquisition in vibration monitoring, sonar, and anti-alias-critical systems-requiring no FPGA design effort when used with the EVAL-CED1Z host platform.

Technical Context

The EVAL-AD7764EDZ interfaces directly with the EVAL-CED1Z via a 34-pin SPORT header, receiving MCLK, FSI, FSO, SDO, and SCO signals to control and acquire data from the AD7764. Its hardware supports both synchronized operation (with EVAL-CED1Z) and standalone mode using external MCLK via SMB connector J17 or onboard 40 MHz crystal oscillator Y1.

Power is supplied through 7.5 V at J2, regulated locally to 2.5 V (for ADC core) and 5 V (for oscillator and digital logic), with separate decoupling paths and a 4-layer PCB layout featuring dedicated ground and power planes per AD7764/AD7765 layout recommendations.

Key Specifications

Availability

EVAL-AD7764EDZ is available at Aetrix Electronics and suitable for vibration monitoring systems, sonar signal conditioning, and high-accuracy data acquisition requiring stable component supply, traceable evaluation hardware, and production-ready reference design validation.

Supply support for EVAL-AD7764EDZ 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

This board belongs to Analog Devices' Converter Evaluation Platform family, designed to accelerate prototyping and performance verification of precision ADCs in demanding measurement applications.

FAQ

What is the primary function of the EVAL-AD7764EDZ?

The EVAL-AD7764EDZ is a dedicated evaluation platform for the AD7764 24-bit Σ-Δ ADC. It provides complete signal chain support-including differential XLR input, 4.096 V precision reference, regulated 2.5 V/5 V supplies, and SPORT-based digital interface-to enable immediate characterization of SNR, THD, and filter response without custom hardware design. The EVAL-AD7764EDZ requires no soldering or configuration to begin sampling.

Does the EVAL-AD7764EDZ require the EVAL-CED1Z to operate?

No-the EVAL-AD7764EDZ supports both modes. With EVAL-CED1Z, it achieves plug-and-play operation using the SPORT header and bundled software. In standalone mode, users apply external MCLK (via J17 SMB), SYNC, RESET, and decimation control signals, while accessing digital I/O through the 34-pin header (J4) or test points. The onboard 40 MHz crystal (Y1) serves as an optional MCLK source.

Which software tools are included with the EVAL-AD7764EDZ?

The EVAL-AD7764EDZ ships with self-installing Windows-compatible software that provides real-time waveform display, FFT analysis, histogram visualization, and register-level control of the AD7764-including power mode, decimation rate, gain correction, and overrange threshold settings. LabVIEW source code and FPGA bitstreams for the EVAL-CED1Z are also provided for customization and integration into user-defined test environments.

What power supply requirements does the EVAL-AD7764EDZ have?

The EVAL-AD7764EDZ requires a single 7.5 V DC input applied across terminals V+ and GND of connector J2. Onboard ADP3330ARTZ-2.5 and ADP3330ARTZ-5 LDOs generate tightly regulated 2.5 V (for AD7764 core) and 5 V (for oscillator and logic) supplies, each with dedicated decoupling. No additional power sources or sequencing is needed-the EVAL-AD7764EDZ manages all internal rail generation and filtering.

How is analog input connected to the EVAL-AD7764EDZ?

Analog input is applied differentially via the black XLR female connector (J1), which routes signals through the AD7764's on-chip differential amplifier. The board implements the recommended front-end circuitry from the AD7764 datasheet, including proper termination and filtering. Users must ensure the input signal complies with the AD7764's ±2.5 V input range relative to the 4.096 V reference, and avoid applying signal before software-initiated power-up to prevent latch-up.