Analog Devices Inc. DC2071A-D

Overview

DC2071A-D from Analog Devices is an evaluation board for the LTC2373-16 - a 16-bit, 1 Msps, 8-channel SAR ADC with 96 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 V to 4.096 V), and bipolar (±2.048 V) input ranges, and operates from a single 5 V supply. The board enables high-precision data acquisition in industrial process control and automated test equipment.

For engineers reviewing the DC2071A-D datasheet, DC2071A-D pinout, DC2071A-D application, or DC2071A-D equivalent, this evaluation board provides validated signal chain implementation, configurable channel sequencing, low-latency conversion timing, and thermal-stable reference performance up to 125°C - critical for evaluating dynamic accuracy (SINAD, THD, SFDR), INL/DNL linearity, and multiplexer crosstalk in real-world systems.

Technical Context

The DC2071A-D implements the LTC2373-16 in a 32-lead 5 mm × 5 mm QFN package with exposed ground pad, supporting all three analog input configurations via hardware-selectable jumpers and software-configurable sequencer. Its layout includes optimized analog power filtering (2.2 µF + 0.1 µF on VDDLBYP, 47 µF + 1200 pF on REFIN), low-inductance signal routing, and isolated digital/analog grounds to preserve 96 dB SNR and –114 dB THD at 1 kHz.

It interfaces via USB through the Linduino platform, exposing the LTC2373-16's SPI bus (SDI/SCK/SDO/BUSY/RDL/CNV), reset, and reference control signals. The board supports programmable gain compression, nap/sleep modes (40 mW typical / 300 µW sleep), and internal oscillator-based timing - eliminating external clock dependencies while maintaining ±1 LSB INL across temperature.

Key Specifications

Availability

DC2071A-D is available at Aetrix Electronics and suitable for industrial process control, high-speed data acquisition, and automated test equipment requiring stable component supply, traceable evaluation hardware, and production-ready reference design validation.

Supply support for DC2071A-D 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 (including legacy Linear Technology) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs, serving precision instrumentation, industrial automation, and communications markets.

The DC2071A-D belongs to Analog Devices' Linduino-compatible evaluation board family, designed specifically to accelerate prototyping and characterization of high-resolution SAR ADCs like the LTC2373 series in demanding measurement applications.

FAQ

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

The DC2071A-D evaluation board is a fully assembled and tested platform for evaluating the LTC2373-16 16-bit, 1 Msps, 8-channel SAR ADC. It provides USB-based control via Linduino firmware, configurable analog input routing, precision reference conditioning, and signal integrity-optimized layout - enabling engineers to validate dynamic performance (SNR, THD, SFDR), linearity (INL/DNL), and multiplexer behavior before system integration. DC2071A-D supports all three input modes and thermal operation up to 125°C.

Does DC2071A-D support all input configurations of the LTC2373-16?

Yes, DC2071A-D supports fully differential (±4.096 V), pseudo-differential unipolar (0 V to 4.096 V), and pseudo-differential bipolar (±2.048 V) input ranges via on-board jumpers and configuration registers. Each mode is validated per LTC2373-16 datasheet specifications: 96 dB SNR (fully diff.), 93.4 dB SNR (pseudo-diff.), and ±1 LSB INL across temperature. The board routes CH0–CH7, COM, MUXOUT±, and ADCIN± with controlled impedance and ground isolation to maintain specified crosstalk (< –107 dB) and CMRR (> 66 dB).

Can DC2071A-D operate with the LTC2373-16's internal reference disabled?

Yes, DC2071A-D allows external reference injection via the REFIN pin, and supports disabling the internal 2.048 V reference buffer by setting REFIN = 0 V (per LTC2373-16 Note 9). When overdriving REFBUF (e.g., with 5 V), the internal buffer must be turned off. The board includes dedicated REFIN and REFBUF test points, decoupling (0.1 µF), and 1.2 kΩ series resistors for safe external reference interfacing - preserving specified full-scale error match (±6 LSB) and drift (0.2 ppm/°C).

What software and drivers are required to use DC2071A-D?

DC2071A-D uses the Linduino IDE (based on Arduino) with preloaded QuikEval firmware and DC2071A-D-specific sketch libraries. Users require the Analog Devices QuikEval software (Windows/macOS), USB-to-serial driver (FTDI), and optionally the LTspice simulation model for signal chain analysis. No custom PCB layout or FPGA logic is needed - all register access, sequencer programming, and data capture are handled via intuitive GUI controls or scriptable API calls. DC2071A-D firmware fully exposes the LTC2373-16's 16-deep sequencer and digital gain compression features.

Is DC2071A-D compatible with other Linduino-based evaluation platforms?

Yes, DC2071A-D is mechanically and electrically compatible with the standard Linduino header interface (100-mil pitch, 2×7-pin), enabling direct connection to Linduino One, Linduino DC2026C, or custom host controllers. Firmware and QuikEval software treat DC2071A-D as a native device - supporting simultaneous multi-board control, synchronized sampling across multiple ADCs, and shared power/ground domains without signal integrity degradation. All timing-critical signals (CNV, BUSY, SCK) meet LTC2373-16's t_CNVH ≥ 20 ns and t_SCK ≤ 10 ns requirements.