Analog Devices Inc. DC2071A-C

Overview

DC2071A-C from Analog Devices is an evaluation board for the LTC2374-16 - a low-noise, 16-bit, 1.6 Msps, 8-channel SAR ADC with onboard 2.048V reference, SPI interface, and fully differential/pseudo-differential input support. It enables high-fidelity data acquisition in industrial process control, ATE, and portable instrumentation requiring ≥96 dB SNR, ±1 LSB INL, and <4 ps RMS aperture jitter.

For engineers reviewing the DC2071A-C datasheet, DC2071A-C pinout, DC2071A-C application, or DC2071A-C equivalent, this board provides full access to the LTC2374-16's configurable sequencer, digital gain compression, nap/sleep power modes, and multiplexer input range selection - all validated for production-ready signal chain design and layout verification.

Technical Context

The DC2071A-C implements the LTC2374-16 in a 32-lead 5 mm × 5 mm QFN package with exposed thermal pad (GND), supporting single 5 V analog supply (VDD) and flexible I/O voltage (OVDD = 1.71–5.25 V). Its hardware design routes all 8 analog inputs (CH0–CH7), MUXOUT±, ADCIN±, REFBUF, REFIN, and full SPI interface (SDO/SCK/SDI/RDL/BUSY/CNV) to accessible test points and headers.

It integrates precision passive components per datasheet recommendations: 10 Ω series resistors on ADCIN±, 1200 pF AC-coupling caps, 47 µF/10 µF/2.2 µF/0.1 µF decoupling network, and dedicated ground planes for analog/digital/reference domains - enabling accurate characterization of crosstalk (<–110 dB), CMRR (≥60 dB), and dynamic performance (SINAD up to 96.5 dB).

Key Specifications

Availability

DC2071A-C is available at Aetrix Electronics and suitable for industrial process control, automated test equipment (ATE), high-speed data acquisition, and portable instrumentation requiring stable component supply and rapid prototyping validation.

Supply support for DC2071A-C 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 technologies, serving precision measurement, communications, and industrial markets.

The DC2071A-C belongs to Analog Devices' LTC evaluation board family, designed specifically to accelerate development and validation of high-resolution SAR ADCs in demanding signal-chain applications where noise, linearity, and timing integrity are critical.

FAQ

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

The DC2071A-C evaluation board is a fully assembled and tested platform for the LTC2374-16 16-bit, 1.6 Msps, 8-channel SAR ADC. It provides immediate access to all device pins, reference circuitry, power conditioning, and SPI interface - enabling engineers to validate dynamic performance (SNR, THD, SINAD), input range configurations, sequencer programming, and low-power modes without custom PCB design. DC2071A-C is not a standalone IC but a system-level tool for rapid LTC2374-16 integration.

Does DC2071A-C support all input ranges specified for the LTC2374-16?

Yes, DC2071A-C supports all three input configurations of the LTC2374-16: fully differential (±4.096 V), pseudo-differential unipolar (0–4.096 V), and pseudo-differential bipolar (±2.048 V). Jumper settings on the board configure REFIN and REFBUF connections to enable each mode, and the analog input path includes matched 10 Ω series resistors and 1200 pF AC-coupling capacitors per channel - matching the recommended layout in the LTC2374-16 datasheet for optimal CMRR and crosstalk performance.

Can DC2071A-C be used with standard SPI host controllers?

Yes, DC2071A-C exposes the full SPI interface (SDO, SCK, SDI, RDL, BUSY, CNV) on a 0.1"-spaced header compatible with common microcontroller and FPGA development platforms. It supports 1.8 V, 2.5 V, 3.3 V, and 5 V logic levels via OVDD configuration, and its timing adheres to LTC2374-16 specifications - including tSCKH/tSCKL ≥ 4 ns, tDSDO ≤ 9.5 ns, and tBUSYLH ≤ 13 ns - ensuring reliable communication with industry-standard SPI peripherals. DC2071A-C requires no special drivers or protocol translation.

How does DC2071A-C facilitate low-power evaluation of the LTC2374-16?

DC2071A-C enables direct measurement of LTC2374-16 power states using on-board test points for VDD and OVDD supply currents. It validates nap mode (120 mA typical at 1.6 Msps) and sleep mode (300 µA) as specified in the datasheet, with dedicated jumpers to isolate reference buffer current (IREFBUF) and disable unused sections. The board's layout separates analog, digital, and reference grounds - preserving the LTC2374-16's ability to scale power dissipation with sampling rate, a key feature confirmed during DC2071A-C functional testing.

Is DC2071A-C compatible with the LTspice® simulation environment?

Yes, DC2071A-C is supported by Analog Devices' LTspice models and demo circuits for the LTC2374-16. While the evaluation board itself is not simulated, its schematic and bill-of-materials are published in the DC2071A-C user guide (UG-835), and LTspice includes behavioral models for the LTC2374-16 core - allowing users to co-simulate signal chain performance (e.g., anti-aliasing filter + DC2071A-C input stage) before hardware testing. DC2071A-C serves as the physical counterpart to these simulations for correlation and validation.