Analog Devices Inc. EVAL-AD5542ASDZ

Overview

EVAL-AD5542ASDZ from Analog Devices is an evaluation board for the AD5542A 16-bit unbuffered voltage-output DAC, designed to validate high-precision DC and dynamic performance in lab and prototype environments. It supports 2.7 V to 5.5 V single-supply operation, delivers 1 LSB INL accuracy, 1 µs settling time, and 11.8 nV/√Hz noise spectral density - enabling characterization of precision source-measure instrumentation and automated test equipment signal chains.

For engineers reviewing the EVAL-AD5542ASDZ datasheet, EVAL-AD5542ASDZ pinout, EVAL-AD5542ASDZ application, or EVAL-AD5542ASDZ equivalent, this board provides full access to the AD5542A's SPI/QSPI/MICROWIRE-compatible interface, hardware CLR/LDAC controls, Kelvin-sense reference routing, and bipolar/unipolar output configuration - critical for validating layout sensitivity, glitch energy (1.1 nV·sec), and temperature drift (0.05 ppm/°C) in production-ready designs.

Technical Context

The EVAL-AD5542ASDZ implements the AD5542A's segmented R-2R + decoded MSB architecture with external op-amp support for bipolar mode, leveraging Kelvin-sense connections on REFF/REFS and AGNDF/AGNDS to minimize ground path errors. It routes all 16 pins of the AD5542A's TSSOP package-including dedicated INV, RFB, LDAC, and CLR-to test points and headers for oscilloscope probing and controlled digital stimulus.

Board-level design includes low-noise decoupling (10 µF tantalum + 100 nF ceramic per supply), selectable reference options (internal 2.5 V or external), and configurable output buffering via header-selectable op-amp stages - preserving the AD5542A's native 6.25 kΩ output impedance and enabling accurate measurement of unbuffered DAC behavior under real-world load conditions.

Key Specifications

Availability

EVAL-AD5542ASDZ is available at Aetrix Electronics and suitable for precision instrumentation prototyping, automated test equipment development, and medical device calibration requiring stable component supply and full-characterization readiness.

Supply support for EVAL-AD5542ASDZ 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-AD5542ASDZ belongs to Analog Devices' precision DAC evaluation platform family, engineered to accelerate validation of ultra-low-drift, low-glitch, high-resolution DACs in metrology-grade applications where monotonicity, noise floor, and thermal stability are design-critical.

FAQ

What is the primary function of the EVAL-AD5542ASDZ evaluation board?

The EVAL-AD5542ASDZ evaluation board is designed exclusively to evaluate the AD5542A 16-bit unbuffered voltage-output DAC. It provides complete access to all pins, supports both unipolar and bipolar output configurations, enables precise measurement of key AC/DC specifications (e.g., 1 µs settling time, 1 LSB INL, 11.8 nV/√Hz noise), and incorporates Kelvin-sense grounding to isolate layout effects - ensuring engineers can validate the true performance of the EVAL-AD5542ASDZ's target IC under real-world signal chain conditions.

Does the EVAL-AD5542ASDZ support both unipolar and bipolar output modes?

Yes, the EVAL-AD5542ASDZ fully supports both unipolar (0 V to VREF) and bipolar (±VREF) output modes as defined in the AD5542A datasheet. Jumper-selectable configuration routes the INV and RFB pins to external op-amp feedback paths required for bipolar operation, while maintaining direct access to VOUT, AGNDF, AGNDS, REFF, and REFS for accurate Kelvin-sense implementation - allowing users to verify bipolar zero-offset error (±1 LSB), gain matching, and resistor ratio accuracy (±0.0015%) per AD5542A specification.

What reference voltage options does the EVAL-AD5542ASDZ provide for the AD5542A?

The EVAL-AD5542ASDZ offers two reference voltage options: a precision onboard 2.5 V reference IC and an external reference input via screw terminal. The board accepts external references from 2.0 V to VDD (2.7 V–5.5 V), matching the AD5542A's specified reference input range. Both options connect to the AD5542A's dual Kelvin-sense pins (REFF and REFS), preserving the EVAL-AD5542ASDZ's ability to characterize reference feedthrough (1 mV p-p), input resistance variation (7.5 kΩ–9 kΩ), and code-dependent capacitance (26 pF) as documented in the AD5542A datasheet.

How does the EVAL-AD5542ASDZ handle power supply decoupling and noise control?

The EVAL-AD5542ASDZ implements rigorous power integrity design: each supply rail (VDD and VLOGIC) features parallel 10 µF tantalum and 100 nF ceramic decoupling capacitors placed adjacent to the AD5542A's pins, per Analog Devices' layout guidelines. This configuration suppresses supply-induced noise and ensures stable operation during high-speed SPI transactions (up to 50 MHz), directly supporting measurement of the AD5542A's 11.8 nV/√Hz noise spectral density and 0.134 µV p-p 0.1 Hz–10 Hz output noise - critical parameters verified using the EVAL-AD5542ASDZ in lab validation.

Can the EVAL-AD5542ASDZ be used to measure the AD5542A's digital feedthrough and glitch impulse?

Yes, the EVAL-AD5542ASDZ is explicitly configured to measure both digital feedthrough (0.2 nV·sec) and digital-to-analog glitch impulse (1.1 nV·sec), as specified for the AD5542A. Test points for CS, SCLK, DIN, and VOUT allow synchronized oscilloscope capture during controlled code transitions - including major carry events for glitch testing and CS-high toggling of SCLK/DIN for feedthrough assessment. The board's low-inductance ground plane and isolated digital/analog routing preserve signal fidelity required to resolve sub-nanovolt transients per AD5542A AC characterization requirements.