Analog Devices Inc. DC2412A-B

Overview

DC2412A-B from Analog Devices (formerly Linear Technology) is an evaluation board designed to demonstrate the LTC2335-16 - a 16-bit, 1 Msps, 8-channel differential SAR ADC with SoftSpan™ configurable input ranges (±10.24V, 0–10.24V, ±5.12V, 0–5.12V), 94.4 dB SNR, ±1 LSB INL, and integrated 4.096 V reference buffer. It supports both CMOS and LVDS serial interfaces and operates across –40°C to 125°C.

For engineers reviewing the DC2412A-B datasheet, DC2412A-B pinout, DC2412A-B application, or DC2412A-B equivalent, this board enables rapid validation of high-voltage, wide common-mode industrial signal acquisition - especially for PLC analog input modules, power line monitoring, and test equipment requiring ±10.24 V bipolar full-scale resolution and no missing codes at 16 bits.

Technical Context

The DC2412A-B implements the LTC2335-16 in its native 48-lead LQFP package with full support for dual-supply operation (VCC = +15 V, VEE = –15 V), internal reference buffer (VREFBUF = 4.096 V), and programmable sequencer. It routes all 16 differential analog inputs (IN0± through IN7±), dual-mode digital I/O (CMOS/LVDS), and critical power/ground pins per Linear's recommended layout for >118 dB CMRR and <1 LSB INL performance.

Board-level features include on-board low-noise LDOs (LT3045 for VDD, LT3094 for OVDD), precision REFIN/REFBUF decoupling (47 µF + 0.1 µF), differential input conditioning with 0.1% thin-film resistor networks, and jumpers for SoftSpan range selection, interface mode, and power supply configuration - enabling direct correlation between schematic design and measured ADC performance.

Key Specifications

Availability

DC2412A-B is available at Aetrix Electronics and suitable for industrial process control, power line monitoring, and automated test equipment requiring stable component supply, full production traceability, and long-term lifecycle support.

Supply support for DC2412A-B 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, formed through the acquisition of Linear Technology in 2017.

The DC2412A-B belongs to ADI's precision data acquisition evaluation platform family, engineered to accelerate development of high-accuracy, high-voltage industrial measurement systems using their flagship SAR ADCs like the LTC2335-16.

FAQ

What is the primary function of the DC2412A-B evaluation board?

The DC2412A-B evaluation board is a fully assembled and tested platform for the LTC2335-16 16-bit, 1 Msps, 8-channel SAR ADC. Its primary function is to enable hardware validation, firmware integration, and performance characterization - including SNR, INL, THD, and crosstalk - under real-world conditions such as wide common-mode input swings, bipolar/unipolar SoftSpan configurations, and CMOS/LVDS interface modes. The DC2412A-B provides all necessary power regulation, signal conditioning, and layout best practices to replicate production-grade behavior.

Does the DC2412A-B support both CMOS and LVDS digital interfaces for the LTC2335-16?

Yes, the DC2412A-B supports both interface modes via onboard jumpers. When configured for CMOS, it uses 1.8 V to 5 V logic levels on SDI, SDO, SCKI, SCKO, CS, BUSY, and CNV. In LVDS mode, it routes differential pairs (SDI+/−, SDO+/−, SCKI+/−, SCKO+/−) with proper 100 Ω termination and common-mode biasing. The DC2412A-B's schematic and layout strictly follow Linear Technology's LVDS routing guidelines to preserve signal integrity and achieve –109 dB THD and 110+ dB SFDR as specified for the LTC2335-16.

Can the DC2412A-B be used to evaluate the LTC2335-16's SoftSpan™ input range flexibility?

Yes, the DC2412A-B includes dedicated header jumpers and configuration resistors that allow users to select any of the four SoftSpan™ input ranges - ±10.24 V, 0–10.24 V, ±5.12 V, or 0–5.12 V - independently per channel or globally. The board's analog front-end uses matched 0.1% thin-film resistor networks and low-leakage multiplexing to maintain accuracy across all ranges. Real-time range switching during conversion sequences can be verified using the DC2412A-B's onboard FPGA-based controller or external host MCU, confirming the LTC2335-16's documented no-latency sequencer functionality.

What power supply requirements does the DC2412A-B have for full LTC2335-16 operation?

The DC2412A-B requires three independent supplies: +15 V (for VCC), –15 V (for VEE), and +5 V (for VDD). These are delivered via screw terminals or optional wall adapters. On-board LT3045 and LT3094 ultra-low-noise LDOs regulate VDD and OVDD to ensure <0.8 µV RMS noise, critical for achieving the LTC2335-16's 94.4 dB SNR. The DC2412A-B also provides test points for VDDLBYP, REFIN, REFBUF, and all analog/digital grounds to facilitate power integrity analysis and debug of supply-related distortion.

Is the DC2412A-B compatible with standard Arduino or Raspberry Pi microcontrollers for quick prototyping?

No, the DC2412A-B is not directly Arduino- or Raspberry Pi-compatible due to its high-voltage analog architecture (±15 V supplies), LVDS/CMOS interface voltage levels, and lack of native USB or GPIO bridging. It interfaces via a 20-pin ribbon cable to the DC2026C demonstration controller (sold separately), which provides USB-to-SPI translation, FPGA-based sequencer control, and PC software (LTspice and Linduino support). For custom host integration, users must implement level-shifted SPI (1.8–5 V) or LVDS transceivers - the DC2412A-B's pinout and schematics are published in the official DC2412A-B user guide to support such designs.