Analog Devices Inc. EVAL-AD7767EDZ

Overview

EVAL-AD7767EDZ from Analog Devices is an evaluation board designed for the AD7767, AD7767-1, and AD7767-2 24-bit, single-channel oversampled SAR ADCs. It supports maximum output data rates of 128 kSPS (AD7767), 64 kSPS (AD7767-1), and 32 kSPS (AD7767-2), operates from ±7.5V/–2.5V external supplies, integrates ADR445 5 V reference and dual ADA4841-1 op-amps, and enables precision linearity testing in audio and instrumentation applications.

For engineers reviewing the EVAL-AD7767EDZ datasheet, EVAL-AD7767EDZ pinout, EVAL-AD7767EDZ application, or EVAL-AD7767EDZ equivalent, this page delivers verified hardware configuration details, CED-compatible interface behavior, on-board clocking (1 MHz crystal oscillator), analog input routing options (XLR/BNC), and software-controlled data capture for SNR/THD/INL validation - all critical for ADC evaluation system integration and performance benchmarking.

Technical Context

The EVAL-AD7767EDZ interfaces directly with the EVAL-CED1Z controller board via a 96-way connector, supporting synchronized digital control, DRDY-driven sampling, and serial SPI communication (CS/SCLK/SDO/SDI) at up to 1.024 MHz MCLK. It provides configurable link options (LK1–LK3, SL1–SL11) to select power sources, reference paths, common-mode voltage, and clock routing.

On-board analog signal conditioning includes differential input capability via XLR (J4) and single-ended-to-differential conversion via BNC (J2), driven by two ADA4841-1 op-amps powered from ±7.5V/–2.5V rails. The board implements a 1 MHz crystal oscillator (Y1) for standalone MCLK generation and supports external MCLK injection via SMB connector J7.

Key Specifications

Availability

EVAL-AD7767EDZ is available at Aetrix Electronics and suitable for high-precision ADC evaluation, audio test equipment development, sensor signal chain validation, and metrology-grade data acquisition requiring stable component supply and traceable evaluation infrastructure.

Supply support for EVAL-AD7767EDZ 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, with design and manufacturing expertise spanning precision data conversion, amplification, and power management.

This evaluation board belongs to Analog Devices' Converter Evaluation Platform (CED-compatible) product line, engineered specifically to accelerate characterization and system-level validation of high-resolution sigma-delta and SAR ADCs in lab and R&D environments.

FAQ

What is the primary purpose of the EVAL-AD7767EDZ?

The EVAL-AD7767EDZ is a dedicated evaluation platform for the AD7767, AD7767-1, and AD7767-2 24-bit SAR ADCs. It enables full functional verification, noise and linearity characterization (including INL/DNL), and SPI interface validation under real-world analog input conditions. The board is not intended for production use but for engineering evaluation only, as explicitly stated in its preliminary technical data sheet.

Does the EVAL-AD7767EDZ include an onboard clock source?

Yes, the EVAL-AD7767EDZ includes a 1 MHz crystal oscillator (Y1) that supplies MCLK to the AD7767 family devices. This oscillator enables standalone operation without external clocking and supports the base sampling rates of 128 kSPS (AD7767), 64 kSPS (AD7767-1), and 32 kSPS (AD7767-2) when used with the default link configuration (SL5 position B). The frequency of the EVAL-AD7767EDZ crystal oscillator is explicitly documented as 1 MHz.

Which ADC variants does the EVAL-AD7767EDZ support?

The EVAL-AD7767EDZ supports three variants: AD7767 (128 kSPS max), AD7767-1 (64 kSPS max), and AD7767-2 (32 kSPS max). All share identical pinouts and interface logic, differing only in internal digital filter configuration and output data rate. The board's link options (e.g., SL5, SL8) and software are validated for all three, and the official documentation confirms full compatibility across the EVAL-AD7767EDZ, EVAL-AD7767-1EDZ, and EVAL-AD7767-2EDZ variants.

How is analog input applied to the EVAL-AD7767EDZ?

Analog input can be applied differentially via XLR connector J4 or single-ended via BNC connector J2, which internally splits the signal to drive both ADA4841-1 op-amps. The board supports common-mode biasing at 2.5 V (VREF/2) through configurable links (SL11), and external common-mode voltage may be injected via J15. Input range is optimized for the 5 V ADR445 reference, enabling full-scale differential input of ±2.5 V.

Is the EVAL-AD7767EDZ compatible with the EVAL-CED1Z controller board?

Yes, the EVAL-AD7767EDZ is fully CED-compatible and designed for direct interfacing with the EVAL-CED1Z via its 96-way connector (J1). This connection provides digital control signals (CS/SCLK/SDO/SDI/DRDY), MCLK (1.024 MHz), power, and ground. When used together, the system supports automated data capture, FFT analysis, and linearity testing using the bundled Windows software - all validated in the official EVAL-AD7767EDZ preliminary technical data.