Analog Devices Inc. EVAL-AD7767-1EDZ

Overview

EVAL-AD7767-1EDZ from Analog Devices is a dedicated evaluation board for the AD7767-1 24-bit, single-channel, oversampled SAR ADC - supporting 64 kSPS output data rate, 109 dB SNR, and 8.5 mW power consumption at 2.5 V supply. It integrates on-board ADA4841-1 op-amps, ADR445 5 V reference, and configurable MCLK/SDO/CS/DRDY interfaces for lab-based ADC characterization and linearity testing in precision measurement systems.

For engineers reviewing the EVAL-AD7767-1EDZ datasheet, EVAL-AD7767-1EDZ pinout, EVAL-AD7767-1EDZ application, or EVAL-AD7767-1EDZ equivalent, this board enables rapid validation of AD7767-1 performance under real-world analog input conditions, including differential audio-grade signal acquisition, daisy-chain configuration verification, and INL/DNL analysis using clipped sine-wave methodology.

Technical Context

The EVAL-AD7767-1EDZ is designed exclusively for evaluating the AD7767-1 ADC variant - which operates at max 64 kSPS with enhanced digital filtering versus the base AD7767 (128 kSPS) and AD7767-2 (32 kSPS). It supports three MCLK sources: onboard 1 MHz crystal (Y1), external SMB input (J7), or CED-supplied 1.024 MHz via 96-way connector.

Power architecture uses ±7.5 V / −2.5 V external supplies routed through ADP3330 LDOs to generate AVDD1/DVDD (2.5 V), VDRIVE (2.5 V), and ADR445 bias (5 V); analog input is conditioned by dual ADA4841-1 op-amps configured for differential drive with V_CM = V_REF/2 = 2.5 V.

Key Specifications

Availability

EVAL-AD7767-1EDZ is available at Aetrix Electronics and suitable for precision data acquisition, industrial sensor interface, audio test equipment, and metrology system development requiring stable component supply and traceable evaluation hardware.

Supply support for EVAL-AD7767-1EDZ 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 centers worldwide.

This evaluation board belongs to Analog Devices' Converter Evaluation Platform family - engineered to accelerate validation of precision ADCs in demanding applications such as seismic instrumentation, medical diagnostics, and calibration-grade test systems.

FAQ

What is the primary function of the EVAL-AD7767-1EDZ?

The EVAL-AD7767-1EDZ is a dedicated evaluation platform for the AD7767-1 24-bit SAR ADC. It enables engineers to characterize key performance metrics - including SNR (109 dB), THD, INL, DNL, and linearity - using calibrated analog inputs, configurable clocking, and PC-based analysis software. The board is not intended for production use but for lab-based device validation prior to system integration.

Which ADC variants does the EVAL-AD7767-1EDZ support?

The EVAL-AD7767-1EDZ is explicitly designed for the AD7767-1 variant, though its hardware is compatible with the full AD7767 family (AD7767, AD7767-1, AD7767-2) as confirmed in the official preliminary technical data. Each variant differs in maximum output data rate (128 kSPS, 64 kSPS, 32 kSPS) and digital filter depth - and the board's link options (LK1/LK2/SL5) allow correct configuration per variant.

Does the EVAL-AD7767-1EDZ require an external controller to operate?

No - the EVAL-AD7767-1EDZ supports both standalone and CED-coupled operation. In standalone mode, external signals (MCLK, CS, SCLK, DRDY) are applied via SMB connectors (J5–J11); when used with the EVAL-CED1Z, all digital control and power are delivered through the 96-way connector, eliminating need for external logic generators or microcontrollers during standard evaluation.

What software is required to use the EVAL-AD7767-1EDZ?

The EVAL-AD7767-1EDZ requires Analog Devices' proprietary Windows-compatible evaluation software (included with the kit), which supports Windows 2000/XP. This software provides real-time waveform capture, FFT analysis, histogram generation, and 21-bit linearity evaluation (INL/DNL) - all synchronized with the EVAL-CED1Z interface. USB drivers must be installed before connecting the hardware.

Can the EVAL-AD7767-1EDZ be used for daisy-chain ADC testing?

Yes - the EVAL-AD7767-1EDZ supports daisy-chain configuration via the SDI/SCLK/CS/DRDY interface. Link SL3 configures the SDI pin for either logic-high default (single-device mode) or cascaded input from another AD7767-series device, enabling verification of multi-ADC synchronization and serial data forwarding without PCB modification.