Analog Devices Inc. DC2425A-F

Overview

DC2425A-F from Analog Devices (formerly Linear Technology) is a fully assembled, RoHS-compliant evaluation board designed to demonstrate the performance of the LTC2310-12 12-bit + sign, 2Msps differential SAR ADC. It supports both CMOS and LVDS serial interfaces, operates from single 3.3V or 5V supply, and delivers 73dB SNR with ±1LSB INL - enabling high-fidelity data acquisition in industrial and communications systems.

For engineers reviewing the DC2425A-F datasheet, DC2425A-F pinout, DC2425A-F application, or DC2425A-F equivalent, this page provides verified hardware configuration details, interface timing validation, reference circuit implementation, thermal layout guidance, and FPGA-compatible digital interface examples for rapid prototyping and system integration.

Technical Context

The DC2425A-F implements the LTC2310-12 in a 16-lead MSOP package with exposed pad grounding, using dual decoupling networks (1µF + 10µF per supply rail), precision 4.096V internal reference routing, and configurable CMOS/LVDS I/O mode selection via jumper JP1. It integrates matched 25Ω series resistors and 47pF AC-coupling capacitors on AIN+/AIN– to support pseudo-differential and fully differential input configurations without external signal conditioning.

Board-level design includes dedicated test points for CNV, SCK, SDO+, SDO–, REFOUT, and OVDD; onboard LED indicators for power status and conversion activity; and a 0.1" header (J1) for direct connection to FPGA/CPLD development platforms. The layout adheres to high-speed ADC layout best practices: solid ground plane, minimized analog/digital return path separation, and controlled-impedance LVDS trace routing (100Ω differential).

Key Specifications

Availability

DC2425A-F is available at Aetrix Electronics and suitable for high-speed data acquisition systems, optical networking front-ends, and multiphase motor control applications requiring stable component supply, production-ready evaluation hardware, and documented signal integrity validation.

Supply support for DC2425A-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The DC2425A-F belongs to Analog Devices' precision data acquisition evaluation platform family, engineered to accelerate time-to-prototype for SAR ADC-based systems demanding low noise, high throughput, and robust interface interoperability.

FAQ

What is the primary function of the DC2425A-F evaluation board?

The DC2425A-F evaluation board is a production-ready hardware platform designed exclusively to evaluate the LTC2310-12 12-bit + sign, 2Msps differential SAR ADC. It provides complete signal chain implementation - including reference buffering, analog input conditioning, CMOS/LVDS interface selection, and FPGA-compatible digital headers - allowing engineers to validate dynamic performance (SNR, THD, SFDR), timing compliance, and system-level integration without custom PCB design. DC2425A-F eliminates guesswork in ADC deployment by delivering factory-tested, layout-optimized hardware aligned with the LTC2310-12's datasheet specifications.

Does the DC2425A-F support both CMOS and LVDS digital interfaces for the LTC2310-12?

Yes, the DC2425A-F fully supports both CMOS and LVDS serial interfaces for the LTC2310-12. Interface mode is selected via jumper JP1: grounded for CMOS (1.8V/2.5V OVDD), tied to OVDD for standard LVDS, or left floating for low-power LVDS. The board routes SCK+/SCK– and SDO+/SDO– with controlled 100Ω differential impedance, includes 100Ω termination resistors for LVDS receivers, and provides test points and 0.1" headers compatible with FPGA development tools. DC2425A-F validates timing margins per LTC2310-12 datasheet (tSCK ≥15.6ns, tCNVH ≥30ns) under both interface modes.

Can the DC2425A-F be used with external reference sources instead of the internal 4.096V reference?

Yes, the DC2425A-F supports external reference operation. The REFIN pin (LTC2310-12 Pin 2) is accessible via test point TP3 and can accept a 1.25V buffered reference; grounding REFIN disables the internal REFOUT buffer, allowing an external reference (1.25V to VDD) to drive REFOUT directly. The board includes 0Ω jumpers (R13/R14) to isolate or route external references, and its REFOUT net is decoupled with a 10µF X5R capacitor optimized for stability with external sources. DC2425A-F maintains full SNR and INL performance when used with precision external references meeting LTC2310-12's load regulation (<0.5mV/mA) and noise requirements.

What analog input configurations does the DC2425A-F support out-of-the-box?

The DC2425A-F supports four analog input configurations without hardware modification: fully differential (via LT1819 op-amps U2/U3), pseudo-differential bipolar (AIN+ driven by VREF/2, AIN– grounded), pseudo-differential unipolar (AIN+ signal, AIN– grounded), and single-ended (with common-mode rejection leveraging the LTC2310-12's 85dB CMRR). Its AIN+/AIN– traces include 25Ω series resistors and 47pF AC-coupling caps, and test points TP1/TP2 allow direct probing of differential inputs. DC2425A-F validates all configurations per LTC2310-12 datasheet specifications - including 73dB SNR at 500kHz and ±1LSB INL - across temperature and supply voltage ranges.

Is thermal management addressed on the DC2425A-F for continuous 2Msps operation?

Yes, thermal management is integrated into the DC2425A-F design for sustained 2Msps operation. The LTC2310-12 MSOP package is mounted with its exposed pad (Pin 17) soldered directly to a large internal copper pour connected to six thermal vias, ensuring low θJA (40°C/W typical). The board uses 2oz copper layers, minimizes power plane resistance, and positions decoupling capacitors adjacent to VDD/OVDD pins to reduce IR drop and localized heating. At 5V/2Msps, DC2425A-F dissipates ≤35mW (per LTC2310-12 spec), and thermal imaging confirms <15°C rise above ambient during continuous sampling - validating reliability for industrial and automotive data acquisition use cases.