Analog Devices Inc. DC1783A-D

Overview

DC1783A-D from Analog Devices (formerly Linear Technology) is a fully assembled, tested, and documented demonstration board for the LTC2376-16 16-bit, 250ksps SAR ADC. It provides a complete signal chain with precision reference, low-noise analog front-end, daisy-chain-capable SPI interface, and on-board power regulation - enabling rapid evaluation of dynamic performance (97dB SNR, ±0.5LSB INL), digital gain compression (DGC), and high-temperature operation up to 125°C in real-world data acquisition systems.

For engineers reviewing the DC1783A-D datasheet, DC1783A-D pinout, DC1783A-D application, or DC1783A-D equivalent, this board delivers production-ready layout, calibrated test points for IN+/IN–, REF, and BUSY timing, configurable DGC enable/disable, jumper-selectable VREF (2.5V/4.096V/5.0V), and compatibility with QuikEval™ software for FFT analysis, histogram, and noise floor measurement - critical for medical imaging, portable instrumentation, and industrial process control validation.

Technical Context

The DC1783A-D implements the LTC2376-16 in its 16-lead DFN package (4mm × 3mm) with exposed pad thermal management, using a dedicated 2.5V LDO for VDD and independent 1.8V/3.3V/5V selectable OVDD rail. It integrates the LT6657 ultra-low-noise 5.0V reference (0.025% initial accuracy, 10ppm/°C drift) and supports both single-ended-to-differential (via LT6350) and fully differential input configurations.

Board-level features include dual-stage RC anti-aliasing filtering (LPF1 + LPF2), isolated ground planes for analog/digital domains, test point access to all critical signals (CNV, BUSY, SCK, SDO, RDL/SDI, CHAIN), and solder jumpers for REF/DGC logic level selection (GND = DGC enabled, VREF = DGC disabled), enabling direct verification of full-scale range compression from ±5V to 0.5V–4.5V per datasheet specification.

Key Specifications

Availability

DC1783A-D is available at Aetrix Electronics and suitable for medical imaging systems, portable instrumentation, industrial process control, high-speed data acquisition, and battery-operated test equipment requiring stable component supply, traceable evaluation hardware, and validated signal chain performance.

Supply support for DC1783A-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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing (DSP) technologies, serving industrial, automotive, communications, and healthcare markets with precision data conversion, power management, and RF solutions.

The DC1783A-D belongs to ADI's QuikEval™ demonstration platform family, designed specifically to accelerate evaluation and prototyping of high-speed, high-accuracy ADCs like the LTC2376-16 - emphasizing out-of-the-box usability, metrology-grade calibration, and seamless integration with industry-standard analysis tools.

FAQ

What is the primary function of the DC1783A-D evaluation board?

The DC1783A-D evaluation board is a ready-to-use hardware platform for evaluating the LTC2376-16 16-bit, 250ksps SAR ADC. It provides full signal conditioning, precision reference, configurable digital gain compression (DGC), and SPI interface - allowing engineers to validate dynamic performance (97dB SNR, –125dB THD), timing behavior, and system-level integration without custom PCB design. The DC1783A-D enables immediate functional and parametric testing of the LTC2376-16 under real operating conditions.

Does the DC1783A-D support digital gain compression (DGC) mode for the LTC2376-16?

Yes, the DC1783A-D fully supports DGC mode via a dedicated solder jumper (JP1) that connects the REF/DGC pin of the LTC2376-16 to either GND (DGC enabled) or VREF (DGC disabled). When enabled, the DC1783A-D validates the 0.5V–4.5V input range (for 5V reference), confirming preservation of 16-bit resolution and elimination of negative supply requirements for driving amplifiers - as specified in the LTC2376-16 datasheet.

Which reference voltage options are available on the DC1783A-D?

The DC1783A-D offers three factory-configurable reference voltage options via solder jumpers: 2.5V (internal LT6657 divider), 4.096V (precision bandgap), and 5.0V (LT6657-5.0). All options maintain <10ppm/°C drift and sub-1µV RMS noise, ensuring accurate scaling across the LTC2376-16's supported 2.5V–5.1V VREF range and enabling direct correlation with datasheet test conditions (e.g., 97dB SNR at 5V VREF).

Can the DC1783A-D be used for daisy-chain configuration of multiple LTC2376-16 devices?

Yes, the DC1783A-D implements the LTC2376-16's native daisy-chain capability through its CHAIN and RDL/SDI pins. The board includes test points and routing optimized for multi-ADC synchronization, with matched trace lengths for SCK and CNV signals. It supports simultaneous sampling and cascaded SPI readout - verified using QuikEval™ software - making it suitable for channel expansion in high-channel-count data acquisition systems.

What software and drivers are required to operate the DC1783A-D?

The DC1783A-D is fully supported by Analog Devices' QuikEval™ software (Windows-based), which provides real-time FFT, histogram, noise floor analysis, and timing measurements. No additional drivers are needed - communication occurs over USB via an integrated FT232H bridge IC. Firmware updates and configuration files for the DC1783A-D are hosted on the official Analog Devices product page for the LTC2376-16 and require no third-party toolchain.