Analog Devices Inc. DC2395A-F

Overview

DC2395A-F from Analog Devices (formerly Linear Technology) is a fully populated, ready-to-use evaluation board for the LTC2325-14 quad 14-bit + sign SAR ADC. It supports simultaneous sampling at 5 Msps per channel, features differential inputs with ±4.096 V full-scale range, 81 dB SNR at 2.2 MHz, and configurable CMOS/LVDS serial interface - enabling high-fidelity data acquisition in motor control and optical networking systems.

For engineers reviewing the DC2395A-F datasheet, DC2395A-F pinout, DC2395A-F application, or DC2395A-F equivalent, this page delivers verified board-level specifications, FPGA-compatible timing validation, on-board reference buffering, dual-supply (3.3 V/5 V) operation support, and direct SPI/LVDS interface compatibility with Xilinx and Intel FPGA development platforms.

Technical Context

The DC2395A-F implements the LTC2325-14 in a 52-lead QFN package with all four analog input channels routed to SMA connectors and independent decoupling. It integrates precision 10 µF X5R ceramic capacitors on each REFOUTx pin and uses low-inductance layout techniques to preserve 81 dB SNR and –88 dB THD performance across the full 5 Msps/channel throughput.

Board-level design includes selectable CMOS/LVDS I/O mode via jumper JP1, SDR/DDR configuration via JP2, CLKOUT enable/disable via JP3, and internal reference buffer enable/disable via JP4 - allowing full functional validation of all LTC2325-14 operating modes without external component modification.

Key Specifications

Availability

DC2395A-F is available at Aetrix Electronics and suitable for high-speed data acquisition, multiphase motor control, optical networking, and communications test equipment requiring stable component supply and rapid prototyping capability.

Supply support for DC2395A-F 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, serving industrial, automotive, communications, and healthcare markets.

The DC2395A-F belongs to ADI's Linear Technology evaluation board portfolio, designed specifically to accelerate system-level validation of high-speed, high-precision SAR ADCs in real-world FPGA- and microcontroller-based signal chains.

FAQ

What is the primary function of the DC2395A-F evaluation board?

The DC2395A-F evaluation board is a complete hardware platform for evaluating the LTC2325-14 quad 14-bit + sign SAR ADC. It enables immediate testing of simultaneous 5 Msps/channel sampling, differential input performance, CMOS/LVDS interface timing, and internal reference accuracy - without requiring custom PCB design. The DC2395A-F provides all necessary power regulation, signal conditioning, and FPGA-compatible digital interfacing to validate the DC2395A-F in target applications.

Does the DC2395A-F support both CMOS and LVDS digital interfaces?

Yes, the DC2395A-F supports both CMOS and LVDS digital interfaces via jumper JP1. When JP1 is set to GND, the board configures the LTC2325-14 for CMOS I/O (1.8 V or 2.5 V logic levels). When JP1 is set to OVDD, it enables LVDS mode with differential SDO/CLKOUT signaling. The DC2395A-F includes matched-length, 100 Ω differential routing and onboard termination options to ensure signal integrity for both modes.

Can the DC2395A-F operate with an external reference voltage?

Yes, the DC2395A-F supports external reference operation. Jumper JP4 controls REFBUFEN: when open, the internal reference buffers are enabled (default); when shorted, REFBUFEN is grounded, disabling all four REFOUTx buffers and allowing external reference voltages (1.25 V to 5 V) to be applied directly to REFOUT1–4 pins. This configuration is validated for use with precision external references such as the LT6657 or ADR4540, preserving DC2395A-F timing and noise performance.

What FPGA development platforms is the DC2395A-F compatible with?

The DC2395A-F is compatible with Xilinx Kintex-7, Artix-7, and Zynq-7000 FPGAs, as well as Intel Cyclone V and Arria 10 devices. Its LVDS outputs meet ANSI/TIA/EIA-644-A specifications, and CMOS outputs comply with 1.8 V/2.5 V LVTTL standards. The DC2395A-F includes documented pin mappings, timing constraints (tSCK = 9.1 ns min), and reference HDL examples for seamless integration into FPGA-based data acquisition systems.

Does the DC2395A-F include power supply circuitry for both VDD and OVDD?

Yes, the DC2395A-F includes dedicated power circuitry: a 5 V or 3.3 V input accepts either supply for VDD (via barrel jack or screw terminal), while a separate 2.5 V LDO (LT3045) generates clean OVDD for digital I/O. Both rails feature low-noise regulation, multi-stage ceramic bypassing (0.1 µF + 10 µF per supply pin), and current monitoring resistors. This ensures the DC2395A-F meets the LTC2325-14's strict supply rejection and jitter requirements across all operating modes.