Analog Devices Inc. EVAL-AD7902SDZ

Overview

EVAL-AD7902SDZ from Analog Devices is a daughterboard evaluation kit designed to characterize the AD7902 dual pseudo-differential 16-bit, 1 MSPS PulSAR® ADC under real-world signal conditioning, reference, and power conditions. It integrates ADR435 (5.0 V reference), ADA4841-1 op amps for analog input buffering, ADP7104/ADP2301 regulators, and interfaces via 120-pin connector to the EVAL-SDP-CB1Z system demonstration platform.

For engineers reviewing the EVAL-AD7902SDZ datasheet, EVAL-AD7902SDZ pinout, EVAL-AD7902SDZ application, or EVAL-AD7902SDZ equivalent, this page delivers verified hardware configuration details, supported operating modes (SDP-controlled and standalone), software-controlled data capture up to 1 MSPS, FFT/histogram/waveform analysis capabilities, and precise analog input path setup using SMA J6/J14 connectors.

Technical Context

The EVAL-AD7902SDZ implements a complete analog front-end for the AD7902, featuring dual independent pseudo-differential input paths with unity-gain buffered amplifiers (ADA4841-1), on-board ±2.5 V/7.5 V/3.3 V/2.5 V/5 V regulated rails, and a high-precision ADR435 5.0 V reference directly driving both ADC channels. Signal routing supports flexible configuration via solder links (SL1–SL4, LK1–LK12) for bench supply operation or SDP interface alignment.

It operates in two distinct modes: SDP-controlled mode (using EVAL-SDP-CB1Z's ADSP-BF527 DSP via SPORT interface and level-shifted 3.3 V logic) or standalone mode (via J5 connector/test points). The board uses SMA connectors J6 and J14 for low-noise analog input, J10 and J15 for balanced termination, and provides full PC-based control through Windows-compatible evaluation software with waveform, histogram, and FFT analysis functions.

Key Specifications

Availability

EVAL-AD7902SDZ is available at Aetrix Electronics and suitable for precision ADC evaluation, analog front-end validation, and high-fidelity data acquisition system prototyping requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for EVAL-AD7902SDZ 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 evaluation board belongs to Analog Devices' PulSAR® ADC evaluation platform family, engineered specifically to accelerate development and characterization of precision SAR ADCs in test, measurement, and instrumentation applications.

FAQ

What is the primary function of the EVAL-AD7902SDZ?

The EVAL-AD7902SDZ is a dedicated daughterboard evaluation kit for the AD7902 dual 16-bit, 1 MSPS PulSAR® ADC. It provides full analog signal conditioning-including buffered 5.0 V reference (ADR435), dual ADA4841-1 input drivers, and multi-rail power regulation-alongside PC-based software for time-domain and frequency-domain analysis. Its purpose is to enable rapid, accurate performance validation of the AD7902 in realistic system conditions.

Which controller board is required to operate the EVAL-AD7902SDZ in SDP-controlled mode?

The EVAL-AD7902SDZ requires the EVAL-SDP-CB1Z system demonstration platform board for SDP-controlled mode operation. It connects via a 120-pin edge connector (J5 on EVAL-AD7902SDZ to J4 on EVAL-SDP-CB1Z), enabling communication through the ADSP-BF527 DSP's SPORT interface and USB-hosted evaluation software. Without EVAL-SDP-CB1Z, only standalone mode (via external serial interface) is possible.

Does the EVAL-AD7902SDZ include its own power supply or require external sources?

The EVAL-AD7902SDZ includes an onboard 9 V dc wall adapter input and generates all necessary rails (+7.5 V, −2.5 V, +2.5 V, +3.3 V, +5 V) using ADP7104 and ADP2301 regulators. No external bench supplies are needed unless configured for standalone operation via J2/J3 screw terminals and solder link repositioning (SL1–SL4, LK3–LK5 to Position B).

What software is used to control and analyze data from the EVAL-AD7902SDZ?

The official Analog Devices AD7902 evaluation software (v03) is used to control the EVAL-AD7902SDZ. It runs on Windows XP SP2 or later, supports USB-connected EVAL-SDP-CB1Z, and provides real-time waveform capture, histogram-based DC analysis (mean, standard deviation), and FFT-based AC performance evaluation (SNR, THD, SFDR). Software is downloaded from the AD7902 product page at analog.com.

Can the EVAL-AD7902SDZ be used without the EVAL-SDP-CB1Z board?

Yes - the EVAL-AD7902SDZ supports standalone mode. In this configuration, it can be interfaced directly via the J5 120-pin connector or test points using an external microcontroller or FPGA implementing the AD7902's SPI-compatible serial protocol. However, PC-based GUI functionality (waveform/FFT/histogram) and automatic calibration features require the EVAL-SDP-CB1Z and associated software stack.