Analog Devices Inc. EVAL-AD7091R-4SDZ

Overview

EVAL-AD7091R-4SDZ from Analog Devices is a full-featured evaluation board for the AD7091R-4 12-bit ultralow power successive approximation analog-to-digital converter (ADC), supporting up to 1 MSPS throughput, single 2.7 V to 5.25 V analog supply (VDD), and 1.65 V to 5.25 V digital supply (VDRIVE), with on-board AD8031/AD8032 op amps, ADP3303 LDO, and REF193 3.0 V reference - designed for precision ADC characterization in sensor monitoring and industrial control applications.

For engineers reviewing the EVAL-AD7091R-4SDZ datasheet, EVAL-AD7091R-4SDZ pinout, EVAL-AD7091R-4SDZ application, or EVAL-AD7091R-4SDZ equivalent, this page delivers verified hardware configuration details, SDP interface requirements, on-board power architecture, software-controlled waveform capture, and DC/AC performance test capabilities - all specific to the AD7091R-4 evaluation platform.

Technical Context

The EVAL-AD7091R-4SDZ implements a system demonstration platform (SDP)-compatible interface via J13, enabling USB-based control through the EVAL-SDP-CB1Z controller board and Analog Devices' PC software. It supports both standalone and host-controlled operation using CONVST-triggered sampling and SPI-compatible serial interface (SCLK/SDI/SDO) routed to the SDP connector.

On-board signal conditioning includes rail-to-rail input buffering (AD8031/AD8032), selectable unipolar/bipolar input paths via J10/J14, configurable termination (51 Ω at VIN0–VIN7, BIPOLAR IN), and flexible reference sourcing (internal 2.5 V, REF193 3.0 V, or external via J12), all aligned with the AD7091R-4's native 0 V to VREF input range and internal oscillator-driven conversion timing.

Key Specifications

Availability

EVAL-AD7091R-4SDZ is available at Aetrix Electronics and suitable for industrial sensor interface validation, embedded data acquisition prototyping, and precision ADC performance benchmarking requiring stable component supply and full documentation traceability.

Supply support for EVAL-AD7091R-4SDZ 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 Wilmington, MA, with deep expertise in precision data conversion and sensor signal chains.

EVAL-AD7091R-4SDZ belongs to Analog Devices' evaluation kit product line, engineered specifically to accelerate development with the AD7091R-x family of ultralow power 12-bit SAR ADCs for battery-powered and space-constrained monitoring systems.

FAQ

What is the primary function of the EVAL-AD7091R-4SDZ?

The EVAL-AD7091R-4SDZ is a dedicated evaluation board for the AD7091R-4 12-bit SAR ADC. It provides complete hardware and software infrastructure-including on-board power regulation, signal conditioning, SDP interface, and Windows-based GUI-to validate the AD7091R-4's DC accuracy, AC performance, and system integration behavior without custom design effort. The EVAL-AD7091R-4SDZ enables rapid functional verification and parametric testing of the target ADC in real-world signal chain configurations.

Which host interface does the EVAL-AD7091R-4SDZ require to operate?

The EVAL-AD7091R-4SDZ requires the EVAL-SDP-CB1Z system demonstration platform board to establish USB communication with a Windows PC. The J13 120-way connector mates directly with the SDP board, routing CONVST, SCLK, SDI, SDO, and power signals. No standalone USB capability exists on the EVAL-AD7091R-4SDZ itself - the EVAL-SDP-CB1Z is mandatory for PC-based control and data acquisition using the official Analog Devices evaluation software.

Does the EVAL-AD7091R-4SDZ support both unipolar and bipolar input signals?

Yes, the EVAL-AD7091R-4SDZ supports both input types. Bipolar signals connect to J10 (BIPOLAR IN), where on-board bias-up circuitry shifts them to a unipolar range centered at VREF/2, then outputs the conditioned signal at J14 (UNIPOLAR OUT) for connection to any multiplexer input (J5–J8 or J16–J19). Unipolar signals may be applied directly to those same inputs. All analog paths include 51 Ω termination options and buffer selection via SL1–SL16 jumpers.

What power supplies are needed to run the EVAL-AD7091R-4SDZ?

The EVAL-AD7091R-4SDZ ships with a 9 V dc wall adapter that connects to J1 and powers the on-board ADP3303 5 V regulator and REF193 3.0 V reference - sufficient for full operation with the EVAL-SDP-CB1Z. When used standalone (no SDP), external 2.7–5.25 V must be applied to VDD (J9 or LK9/LK11), and 1.65–5.25 V to VDRIVE (J4 or LK3/LK8). With SDP connected, VDRIVE is fixed at 3.3 V; exceeding this risks permanent damage to the SDP board.

Can the EVAL-AD7091R-4SDZ be used without the EVAL-SDP-CB1Z board?

Yes - the EVAL-AD7091R-4SDZ supports standalone operation using test points and direct signal injection. Users can apply CONVST pulses, monitor SDO output, and probe ADCIN, MUXOUT, and reference nodes independently. However, full GUI functionality (waveform capture, FFT, register access) requires the EVAL-SDP-CB1Z and associated software. Standalone mode is intended for debug, signal integrity checks, or integration into custom host systems using the documented SPI interface timing and pinout.