Analog Devices Inc. EVAL-AD7683SDZ

Overview

EVAL-AD7683SDZ from Analog Devices is an evaluation board designed specifically for the AD7683 - a 16-bit, 100 kSPS PulSAR® successive approximation register (SAR) analog-to-digital converter in an 8-lead MSOP package. It provides full signal conditioning, on-board 5.0 V reference (ADR435), dual ADA4841-1 op-amp drivers, and level-shifting circuitry (ADG3304) to interface the 5 V logic ADC with the 3.3 V EVAL-SDP-CB1Z system demonstration platform.

For engineers reviewing the EVAL-AD7683SDZ datasheet, EVAL-AD7683SDZ pinout, EVAL-AD7683SDZ application, or EVAL-AD7683SDZ equivalent, this page delivers verified hardware configuration details, supported ADC family coverage, software operation guidance, power supply architecture, and real-world test setup requirements for precision SAR ADC characterization.

Technical Context

The EVAL-AD7683SDZ implements a dedicated 8-lead PulSAR® evaluation platform with factory-configured single-ended analog input path (per SL10 = B jumper setting), SMA-connected inputs (J6/J10), and unity-gain buffered amplifiers powered by ±2.5 V/7.5 V rails. It interfaces via SPORT protocol through an ADSP-BF527 DSP and uses ADG3304 level shifters to translate between the AD7683's 5 V digital I/O and the SDP board's 3.3 V logic levels.

Power is derived from a 9 V wall adapter or bench supply, generating +7.5 V (ADP7102), −2.5 V (ADP2301), +5 V (ADP2301), +3.3 V (ADP7104), and +2.5 V (ADP7104) rails - all decoupled per device. The board supports dynamic testing (FFT, SNR, SINAD, THD, SFDR) and DC analysis (code distribution, INL/DNL estimation) using PC-based software compatible with Windows®.

Key Specifications

Availability

EVAL-AD7683SDZ is available at Aetrix Electronics and suitable for precision data acquisition, industrial sensor interface, and medical instrumentation applications requiring stable component supply and validated ADC evaluation infrastructure.

Supply support for EVAL-AD7683SDZ 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.

The EVAL-AD7683SDZ belongs to Analog Devices' PulSAR® evaluation board family, engineered to accelerate prototyping and performance validation of precision SAR ADCs used in high-fidelity measurement systems where resolution, linearity, and noise floor are critical.

FAQ

What is the primary function of the EVAL-AD7683SDZ?

The EVAL-AD7683SDZ is a dedicated evaluation board for the AD7683 16-bit, 100 kSPS SAR ADC. It enables rapid performance characterization - including AC metrics (SNR, SINAD, THD, SFDR) and DC metrics (INL, DNL, code histogram) - using integrated signal conditioning, on-board reference, level-shifting, and PC-based software. The EVAL-AD7683SDZ is not a standalone product but a development tool for validating system-level ADC behavior before integration.

Which ADCs does the EVAL-AD7683SDZ support besides the AD7683?

The EVAL-AD7683SDZ is part of the 8-lead PulSAR® evaluation platform and explicitly supports the AD7683, AD7684, and AD7694 - all 16-bit SAR ADCs in 8-lead MSOP packages. While the broader UG-340 document covers both 8- and 10-lead variants, the EVAL-AD7683SDZ board itself is configured for 8-lead devices only and requires physical replacement of U1 (the ADC IC) to evaluate other members of that group.

How does the EVAL-AD7683SDZ interface with the EVAL-SDP-CB1Z?

The EVAL-AD7683SDZ connects to the EVAL-SDP-CB1Z via a 120-pin edge connector (J5). Digital communication uses the SPORT interface from the ADSP-BF527 DSP on the SDP board. Because the AD7683 operates at 5 V logic levels while the SDP board uses 3.3 V, the EVAL-AD7683SDZ incorporates the ADG3304 level shifter (U16) to ensure reliable bidirectional signal translation without voltage damage or timing violation.

What power supplies are generated onboard the EVAL-AD7683SDZ?

The EVAL-AD7683SDZ generates five regulated rails from a 9 V input: +7.5 V (ADP7102, for analog amplifier positive rail), −2.5 V (ADP2301, for amplifier negative rail), +5 V (ADP2301, for SDP power and reference), +3.3 V (ADP7104, for VDRIVE/digital logic), and +2.5 V (ADP7104, for ADC analog supply). All rails are locally decoupled, and the board supports bench supply input via J2/J3 with corresponding solder link adjustments (SL1–SL7).

Does the EVAL-AD7683SDZ require external software, and where is it obtained?

Yes - the EVAL-AD7683SDZ requires proprietary Windows®-based evaluation software provided by Analog Devices. It is downloaded from the official Analog Devices product page for the AD7683 or the EVAL-AD7683SDZ. Installation includes two components: the ADC evaluation software and the EVAL-SDP-CB1Z USB drivers. The software supports waveform capture, FFT analysis, histogram generation, and .tsv data export - all calibrated for the AD7683's 100 kSPS sampling rate and 5 V reference.