Analog Devices Inc. EVAL-AD7266EDZ

Overview

EVAL-AD7266EDZ from Analog Devices is an evaluation board designed for the AD7266 dual 12-bit, 2 MSPS successive approximation ADC, supporting both single-ended and differential analog input configurations with on-board AD780 voltage reference, AD8022 op amps, and single-ended-to-differential conversion circuitry. It interfaces via a 96-way edge connector compatible with EVAL-CED1Z and enables rapid characterization of high-speed data acquisition performance in lab and design validation environments.

For engineers reviewing the EVAL-AD7266EDZ datasheet, EVAL-AD7266EDZ pinout, EVAL-AD7266EDZ application, or EVAL-AD7266EDZ equivalent, this board supports flexible analog signal conditioning, configurable channel selection (up to 12 inputs), reference source switching (internal/external 2.5 V or 3.0 V), and software-controlled sampling-critical for validating ADC behavior under real-world timing, noise, and layout conditions.

Technical Context

The EVAL-AD7266EDZ implements full hardware support for the AD7266's dual-channel, simultaneous-sampling architecture, including independent analog front-end paths for VA1–VA6 and VB1–VB6, each configurable via 49 link options for input sourcing, reference routing, mode selection (SGL/DIFF), and range setting (0–VREF or 0–2×VREF). It integrates dedicated AD8138-based differential converters and bias-up circuitry for bipolar single-ended signals.

Power architecture separates analog (AVDD, ±12 V) and digital (DVDD, VDRIVE) domains with AGND/DGND isolation and localized decoupling (10 µF tantalum + 0.1 µF ceramic per supply rail); the AD780 reference is pin-programmable to 2.5 V or 3.0 V via LK16, and its output feeds DCAPA/DCAPB pins through configurable links LK13/LK14.

Key Specifications

Availability

EVAL-AD7266EDZ is available at Aetrix Electronics and suitable for high-speed data acquisition validation, precision sensor interface prototyping, and mixed-signal system bring-up requiring stable component supply, traceable sourcing, and long-term evaluation board continuity.

Supply support for EVAL-AD7266EDZ 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 deep expertise in precision data conversion and signal conditioning.

EVAL-AD7266EDZ belongs to Analog Devices' precision ADC evaluation platform family, engineered specifically to accelerate development of high-fidelity, low-noise, high-throughput data acquisition systems for test equipment, industrial automation, and medical instrumentation.

FAQ

What is the primary purpose of the EVAL-AD7266EDZ?

The EVAL-AD7266EDZ is a dedicated evaluation board for the AD7266 dual 12-bit, 2 MSPS SAR ADC. It provides complete hardware infrastructure-including analog buffering, reference generation, single-ended-to-differential conversion, and configurable link-based setup-to enable accurate, repeatable characterization of the AD7266's performance in real-world signal chain conditions without custom PCB design.

Does the EVAL-AD7266EDZ support both AD7265 and AD7266 devices?

Yes, the EVAL-AD7266EDZ is explicitly designed as a shared evaluation platform for both the AD7265 and AD7266. Its hardware-including the AD780 reference, AD8022 op amps, link configuration matrix, and 96-way connector-is functionally identical for both devices, and all documentation, software, and jumper settings apply to either IC without modification.

How is the reference voltage configured on the EVAL-AD7266EDZ?

The EVAL-AD7266EDZ uses the AD780 voltage reference, which is pin-programmable to 2.5 V (LK16 removed) or 3.0 V (LK16 inserted). Reference routing to the AD7266's DCAPA/DCAPB pins is controlled by LK13 and LK14, allowing selection between internal reference, external reference via J24/J25, or AD780 output-enabling precise validation of reference-dependent parameters like INL and gain error.

Can the EVAL-AD7266EDZ operate without the EVAL-CED1Z interface board?

Yes, the EVAL-AD7266EDZ supports standalone operation using external power supplies (+12 V, −12 V, AVDD, DVDD, VDRIVE) applied via J2, J3, and J30. All 49 link options remain fully functional, permitting complete analog input configuration, mode selection, and reference control-making it suitable for isolated lab testing or integration into custom host systems.

What software tools are provided for use with the EVAL-AD7266EDZ?

Analog Devices provides PC-based evaluation software that interfaces with the EVAL-CED1Z to control the EVAL-AD7266EDZ. This software enables real-time sampling, FFT analysis, histogram plotting, and configurable acquisition parameters (sample rate, channel pair, range, mode). It requires no firmware programming and communicates directly over the 96-way connector using standard SPI-like timing protocols defined for the AD7266.