Analog Devices Inc. EVAL-AD5371EBZ

Overview

EVAL-AD5371EBZ from Analog Devices is a full-featured evaluation board for the AD5371 40-channel, 14-bit voltage-output DAC. It supports USB-based register programming, stand-alone operation via 20-pin header J3, and flexible reference selection (3 V, 5 V, or external). Designed for rapid prototyping of high-precision analog output systems in industrial control and test instrumentation.

For engineers reviewing the EVAL-AD5371EBZ datasheet, EVAL-AD5371EBZ pinout, EVAL-AD5371EBZ application, or EVAL-AD5371EBZ equivalent, this page details its USB interface architecture, reference configuration options, SPI/LVDS mode selection via LK2, stand-alone signal routing through J3, and software-controlled LDAC/RESET/CLR assertion - all critical for DAC integration validation.

Technical Context

The EVAL-AD5371EBZ implements a complete hardware interface between a host PC (via CY7C68013 USB microcontroller) and the AD5371 LQFP80 DAC. It provides independent power domains (DVCC = +5 V, VDD/VSS configurable), dual on-board references (ADR423 at 3 V, ADR435 at 5 V), and configurable reference routing via LK4 and zero-ohm resistors R16–R18.

Control signals - DIN, SCLK, SYNC, LDAC, CLR, RESET - are routed either from the USB interface (with LK1/LK3/LK8 installed) or from external logic via J3 (with those links removed). LK2 selects SPI (position A) or LVDS (position B) interface mode, directly determining signal protocol compatibility with the target AD5371 configuration.

Key Specifications

Availability

EVAL-AD5371EBZ is available at Aetrix Electronics and suitable for precision DAC evaluation, industrial automation prototyping, and automated test equipment development requiring stable component supply and traceable evaluation hardware.

Supply support for EVAL-AD5371EBZ 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-AD5371EBZ belongs to Analog Devices' precision DAC evaluation platform family, designed specifically to accelerate validation of multichannel, high-resolution DACs in closed-loop control, calibration, and waveform generation applications.

FAQ

What interface modes does the EVAL-AD5371EBZ support for the AD5371?

EVAL-AD5371EBZ supports both SPI and LVDS interface modes for the AD5371. Mode selection is controlled by jumper LK2: position A configures SPI (required for USB operation), while position B enables LVDS. The board's CY7C68013 USB microcontroller only drives SPI signals; LVDS operation requires external LVDS source connected via J3.

How is the reference voltage selected on the EVAL-AD5371EBZ?

Reference selection on EVAL-AD5371EBZ is managed by jumper LK4. Position A applies the 3 V ADR423 reference, position B selects the 5 V ADR435 reference, and position C routes an external voltage from the SMB connector EXT_REF to the AD5371's VREF pins. All three VREF pins (VREF0–VREF2) share the same source by default unless zero-ohm resistors R16–R18 are removed for independent routing.

Can the EVAL-AD5371EBZ operate without a PC connection?

Yes, EVAL-AD5371EBZ supports stand-alone operation. Remove jumpers LK1, LK3, and LK8 to isolate the USB interface, then drive DIN, SCLK, SYNC, LDAC, CLR, and RESET signals directly via the 20-pin J3 header. This allows integration with external DSPs or microcontrollers, enabling custom firmware-based control of the AD5371 without PC dependency.

What software is provided with the EVAL-AD5371EBZ?

EVAL-AD5371EBZ ships with Windows-based PC software that supports register-level programming of the AD5371. It offers four functional tabs: channel data entry (X1A/X1B/M/C), offset DAC configuration, direct 24-bit write and control signal assertion (RESET/CLR/LDAC), and real-time output voltage calculation based on register values, reference voltage, and offset settings.

Which power supplies are required for the EVAL-AD5371EBZ to function with the AD5371?

EVAL-AD5371EBZ requires +5 V for DVCC (applied via screw terminal J2) and user-defined VDD/VSS supplies within the AD5371's specified range (±16.5 V max). USB power (5 V from PC port) powers only the CY7C68013 interface circuitry and is isolated from the AD5371's analog and digital supply domains - no shared rail dependency exists.