Analog Devices Inc. DC2071A-A

Overview

DC2071A-A from Analog Devices (formerly Linear Technology) is an evaluation board designed to demonstrate the LTC2373-18 - an 18-bit, 1 Msps, 8-channel SAR ADC with 100 dB SNR (fully differential), onboard 2.048 V reference buffer, and SPI-compatible serial interface. It supports fully differential (±4.096 V), pseudo-differential unipolar (0–4.096 V), and bipolar (±2.048 V) input ranges, and operates from a single 5 V supply. It is used in high-precision data acquisition systems requiring low crosstalk and guaranteed no missing codes.

For engineers reviewing the DC2071A-A datasheet, DC2071A-A pinout, DC2071A-A application, or DC2071A-A equivalent, this page provides verified hardware configuration details, supported ADC modes, reference architecture, power delivery topology, and compatibility with QuikEval™ software and Linduino firmware for rapid prototyping of industrial process control, ATE, and portable instrumentation systems.

Technical Context

The DC2071A-A implements a complete signal chain around the LTC2373-18, including precision passive filtering (1200 pF + 10 Ω RC anti-aliasing on each channel), low-noise LDO regulation (LT3045 for VDD and OVDD), and buffered reference routing (REFBUF output routed to REFOUT via LT6658). The board features configurable analog input termination (via solder jumpers) for fully differential, pseudo-differential unipolar, or pseudo-differential bipolar operation, and supports both internal reference (2.048 V) and external overdrive (up to 5 V).

It uses a 32-lead 5 mm × 5 mm QFN package for the LTC2373-18, with exposed pad soldered to ground plane for thermal management. Communication is handled via a micro-B USB interface connected to an embedded FT232HL USB-to-SPI bridge, enabling direct PC control without external programmers. The board includes reset, CNV, BUSY, and RDL signals accessible via test points and headers for timing validation and system integration.

Key Specifications

Availability

DC2071A-A is available at Aetrix Electronics and suitable for industrial process control, automated test equipment (ATE), and portable instrumentation requiring stable component supply, full-spectrum dynamic performance validation, and production-ready signal chain reference design.

Supply support for DC2071A-A 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, formed through the acquisition of Linear Technology in 2017.

The DC2071A-A belongs to ADI's QuikEval™ evaluation platform family, engineered to accelerate development of precision data acquisition systems by providing validated hardware, GUI software, and open-source firmware for immediate functional verification of high-resolution ADCs like the LTC2373-18.

FAQ

What is the primary function of the DC2071A-A evaluation board?

The DC2071A-A evaluation board is a fully assembled and tested hardware platform designed specifically to evaluate the LTC2373-18 18-bit, 1 Msps, 8-channel SAR ADC. It provides all necessary power regulation, reference buffering, signal conditioning, and USB-based SPI interface to enable immediate functional testing and performance characterization of the DC2071A-A without custom PCB design.

Does the DC2071A-A support external reference input?

Yes, the DC2071A-A supports external reference input via the REFIN pin of the LTC2373-18. The board allows users to drive REFIN with a precision external source (1.25 V to 2.4 V) while disabling the internal reference buffer (REFBUF), or to overdrive REFBUF with voltages from 2.5 V to 5 V - both configurations are validated and documented in the DC2071A-A user guide and schematics.

Can the DC2071A-A operate with different logic voltage levels for its digital interface?

Yes, the DC2071A-A supports 1.8 V, 2.5 V, 3.3 V, and 5 V logic levels on its SPI interface (SDO, SDI, SCK, RDL) via the OVDD rail, which is independently regulated by an LT3045 LDO. This enables seamless interfacing with host controllers operating across standard logic families without level-shifting circuitry - a key feature confirmed in the LTC2373-18 datasheet and implemented on the DC2071A-A.

Is QuikEval™ software required to use the DC2071A-A?

No, QuikEval™ software is optional but strongly recommended for rapid evaluation. The DC2071A-A is fully compatible with open-source Linduino firmware and Arduino IDE-based code, allowing custom SPI command scripting. However, QuikEval™ provides calibrated FFT analysis, real-time histogram plotting, INL/DNL calculation, and multi-tone SINAD/SFDR measurement - capabilities directly tied to the DC2071A-A's hardware layout and calibration data.

What temperature range is the DC2071A-A rated for?

The DC2071A-A evaluation board is rated for operation from –40°C to 125°C, matching the extended temperature grade of the LTC2373HUH-18 device it hosts. All critical components - including the LT3045 regulators, LT6658 reference buffer, and passive filtering network - are selected and layout-optimized for reliable performance across this full industrial and automotive-grade range.