Analog Devices Inc. DC1996A-A

Overview

DC1996A-A from Analog Devices is a fully populated, RoHS-compliant demonstration board for the LTC2323-16 dual 16-bit 5Msps differential SAR ADC. It enables rapid evaluation of high-speed data acquisition performance-including ±4LSB INL (typ), 81dB SNR at 2.2MHz, and 8VP-P input range-with on-board 4.096V reference buffers, LVDS/CMOS configurable I/O, and optimized layout for low-noise analog signal integrity. Designed for use in optical networking and multiphase motor control signal chains.

For engineers reviewing the DC1996A-A datasheet, DC1996A-A pinout, DC1996A-A application, or DC1996A-A equivalent, this board provides validated hardware implementation of the LTC2323-16's full feature set-including dual-channel simultaneous sampling, one-cycle latency, nap/sleep power modes, and 28-lead QFN (4mm × 5mm) interface-enabling immediate functional validation without custom PCB design.

Technical Context

The DC1996A-A implements the LTC2323-16 in its highest-grade H-temperature variant (–40°C to 125°C), with precision-matched analog input paths, independent 10μF + 0.1μF decoupling per REFOUT1/REFOUT2, and differential LVDS routing for SDO1/SDO2 and CLKOUT outputs. All digital I/O operates at 1.8V–2.5V (OVDD), supporting FPGA/CPLD interfacing with sub-3ns timing margins.

It integrates discrete 25Ω series resistors and 220pF capacitors on each AIN+ and AIN– path to suppress RF energy and damp resonance, while maintaining >10MHz –3dB linear bandwidth. The board supports both internal reference operation (4.096V) and external reference injection via REFINT-controlled buffer disable.

Key Specifications

Availability

DC1996A-A is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical transceiver monitoring, and industrial motor control applications requiring stable component supply and traceable evaluation hardware.

Supply support for DC1996A-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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The DC1996A-A belongs to Analog Devices' Signal Chain Evaluation Platform family, designed to accelerate prototyping and validation of precision data converters in demanding real-world signal acquisition environments.

FAQ

What is the primary function of the DC1996A-A evaluation board?

The DC1996A-A evaluation board is a complete hardware platform for evaluating the LTC2323-16 dual 16-bit 5Msps SAR ADC. It provides all necessary power regulation, reference buffering, signal conditioning, and FPGA-compatible digital interface circuitry to validate DC1996A-A performance in real systems-without requiring custom PCB design or external support components.

Does the DC1996A-A support both CMOS and LVDS digital interfaces?

Yes, the DC1996A-A supports both CMOS and LVDS serial I/O modes via the CMOS/LVDS jumper (JP1). When configured for LVDS, it delivers skew-matched CLKOUT and differential SDO outputs compliant with ANSI TIA/EIA-644-A, enabling robust high-speed communication with FPGAs over 100Ω terminated traces-fully exercising the DC1996A-A's 5Msps per channel capability.

Can the DC1996A-A operate with an external reference voltage?

Yes, the DC1996A-A allows disabling the internal 4.096V reference buffers by grounding the REFINT pin (via JP2), enabling direct connection of an external reference (1.25V to VDD) to REFOUT1 and REFOUT2. This configuration preserves DC1996A-A's full dynamic range and timing accuracy while supporting system-level reference synchronization or ultra-low-drift external references.

What thermal performance does the DC1996A-A deliver in continuous 5Msps operation?

In continuous 5Msps operation with VDD = 5V and LVDS mode, the DC1996A-A dissipates approximately 100mW total (50mW per channel), resulting in a measured junction temperature rise of <12°C above ambient on a standard 4-layer FR-4 PCB with 2oz copper. The exposed pad of the LTC2323HUFD-16 is soldered to a dedicated thermal plane on the DC1996A-A, ensuring reliable operation across the full –40°C to 125°C rating.

Is the DC1996A-A compatible with common FPGA development tools?

Yes, the DC1996A-A features standard 0.1"-spaced headers for SDO1, SDO2, SCK, CNV, and CLKOUT, with 1.8V–2.5V logic levels matching Xilinx Artix-7, Kintex-7, and Intel Cyclone V I/O banks. Example HDL code and Vivado/Quartus reference designs are available from Analog Devices' website to streamline integration of DC1996A-A into FPGA-based data acquisition systems.