Analog Devices Inc. EVAL-AD5780SDZ

Overview

EVAL-AD5780SDZ from Analog Devices is a full-featured evaluation board designed to characterize the AD5780 18-bit serial-input voltage-output DAC with integrated precision reference buffer amplifiers. It supports ±10 V output range, dual analog supply operation (±15 V), and PC-based control via USB-connected System Development Platform (SDP) board. Used for high-accuracy DAC validation in precision instrumentation and calibration systems.

For engineers reviewing the EVAL-AD5780SDZ datasheet, EVAL-AD5780SDZ pinout, EVAL-AD5780SDZ application, or EVAL-AD5780SDZ equivalent, this page provides verified hardware configuration details, software interface behavior, power supply requirements, link option settings, and performance measurement capabilities - all specific to the AD5780 evaluation platform.

Technical Context

The EVAL-AD5780SDZ implements direct access to all AD5780 digital interface pins (SDIN, SCLK, SYNC, LDAC, RESET, CLR, SDO) via 20-pin J3 header and supports two control paths: standalone SDP-board USB interface or external microcontroller connection. On-board ADR4550 5 V reference generates ±5 V and ±10 V reference voltages for configurable DAC output ranges.

Link options LK2/LK8 select reference sources (on-board +10 V/−10 V or external), while LK3/LK4 configure output amplifier gain (unity or ×2); LK1 selects digital supply source (USB/SDP or external 5 V). The board includes buffered (VOUT_BUF) and unbuffered (VOUT) DAC outputs, decoupled with 10 µF + 0.1 µF capacitor pairs per supply rail.

Key Specifications

Availability

EVAL-AD5780SDZ is available at Aetrix Electronics and suitable for precision DAC evaluation, metrology-grade calibration system development, and high-resolution analog output design requiring stable component supply, traceable sourcing, and long-term lifecycle support.

Supply support for EVAL-AD5780SDZ 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement, industrial automation, and communications.

The EVAL-AD5780SDZ belongs to Analog Devices' precision DAC evaluation platform family, engineered to accelerate validation of ultra-high-resolution digital-to-analog conversion in applications demanding sub-LSB linearity and nanovolt-level stability.

FAQ

What is the primary function of the EVAL-AD5780SDZ?

The EVAL-AD5780SDZ is an evaluation board specifically built for the AD5780 18-bit voltage-output DAC. It provides complete hardware access to the DAC's digital interface, configurable reference inputs, buffered/unbuffered outputs, and on-board precision reference generation. Engineers use the EVAL-AD5780SDZ to verify DAC performance metrics-including INL, DNL, settling time, and noise-under real-world supply and loading conditions before integrating the AD5780 into final designs.

How is the EVAL-AD5780SDZ powered?

The EVAL-AD5780SDZ requires three independent supplies: 5 V for digital circuitry (via USB/SDP board or J1 connector), +7.5 V to +16.5 V for the positive analog rail (VDD), and −2.5 V to −16.5 V for the negative analog rail (VSS). Default operation uses the SDP board for 5 V digital power (LK1 in Position A), while analog supplies are externally applied to J2. Each supply is decoupled with 10 µF and 0.1 µF capacitors per ADI UG-256 guidelines.

Which software is used to control the EVAL-AD5780SDZ?

The EVAL-AD5780SDZ is controlled using Analog Devices' dedicated AD5780 Evaluation Software, compatible with Windows XP (SP2 or later) and 32-bit Windows Vista. The software communicates via USB through the SDP board and provides three main functions: register-level configuration (control, clearcode, DAC registers), voltage programming based on VREFP/VREFN inputs, and automated DAC output measurement using GPIB-connected Agilent 3458A multimeters. No third-party drivers or firmware updates are required beyond the included self-installer.

Can the EVAL-AD5780SDZ operate without the SDP board?

Yes - the EVAL-AD5780SDZ can operate without the SDP board by connecting external digital control signals directly to the J3 20-pin header (pins SDIN, SCLK, SYNC, LDAC, RESET, CLR, SDO). Power must be supplied externally to J1 (5 V digital) and J2 (analog ±V), and link options (e.g., LK1 set to Position B) must be adjusted accordingly. However, PC-based software control, automated measurements, and USB enumeration require the SDP board; standalone mode supports only manual or custom MCU-driven DAC testing.

What are the default link settings for ±10 V output on the EVAL-AD5780SDZ?

The default link configuration for ±10 V output on the EVAL-AD5780SDZ is: LK2 in Position B (+10 V reference), LK8 in Position C (−10 V reference), LK3 in Position A (unity-gain output buffer), and LK4 removed. LK9 and LK11 are inserted to route the on-board ADR4550 reference and connect the DAC output to the noninverting input of the AD8675 buffer amplifier. This setup configures the AD5780 for full-scale output of ±10 V with buffered drive capability at VOUT_BUF.