Analog Devices Inc. DC1082A-B

Overview

DC1082A-B from Analog Devices (formerly Linear Technology) is a 14-bit, 3Msps simultaneous-sampling dual-channel ADC evaluation board for the LTC1407A. It implements full differential input paths, on-board 2.5V reference regulation, and a 3-wire serial interface to support real-time acquisition of two synchronized analog signals at up to 1.5Msps per channel. Designed for high-speed portable data acquisition and I/Q demodulation.

For engineers reviewing the DC1082A-B datasheet, DC1082A-B pinout, DC1082A-B application, or DC1082A-B equivalent, this page delivers verified hardware configuration details, supported signal chain topologies, timing-critical layout guidance, and direct compatibility notes with LTC1407A-based production designs.

Technical Context

The DC1082A-B implements the LTC1407A ADC in a fully populated, calibrated evaluation platform with matched differential input traces, low-noise power regulation, and configurable reference routing (internal 2.5V or external overdrive). It supports both single-ended and true differential analog drive modes while preserving the LTC1407A's 80dB CMRR at 100kHz and ≤200ps inter-channel aperture skew.

Board-level design enforces strict analog-digital separation: dedicated ground planes, isolated VDD/VREF bypassing (10μF + 0.1μF), and impedance-controlled SDO/SCK/CONV routing to maintain <0.3ps jitter and full 32-clock serial output integrity. All timing-critical parameters-including tACQ = 39ns, tSK = 200ps, and tCONV = 32–34 SCLK cycles-are validated per LTC1407A specification.

Key Specifications

Availability

DC1082A-B is available at Aetrix Electronics and suitable for high-speed data acquisition systems, telecommunications baseband processing, multiphase motor control feedback loops, and I/Q demodulation requiring stable component supply and validated evaluation hardware.

Supply support for DC1082A-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing ICs for precision measurement, signal conditioning, and high-speed conversion.

The DC1082A-B belongs to Analog Devices' LTC Evaluation Board product line, engineered specifically to accelerate prototyping and characterization of Linear Technology's high-speed, low-power ADCs-particularly those targeting portable instrumentation, communications infrastructure, and industrial automation.

FAQ

What is the primary function of the DC1082A-B evaluation board?

The DC1082A-B evaluation board is a fully assembled and tested platform for the LTC1407A 14-bit, 3Msps simultaneous-sampling dual-channel ADC. It enables rapid validation of analog input signal integrity, serial interface timing, reference stability, and system-level performance metrics such as SINAD, THD, and SFDR-without requiring custom PCB development. The DC1082A-B directly supports the exact pinout, power sequencing, and timing behavior defined for the LTC1407A in its official datasheet.

Does the DC1082A-B support external reference voltage input?

Yes, the DC1082A-B supports external reference voltage input via the VREF pin (LTC1407A Pin 3). The board includes jumper-selectable routing to either the internal 2.5V bandgap reference or an externally supplied reference between 2.55V and VDD (3.6V max). When using an external reference, the DC1082A-B maintains full compliance with LTC1407A specifications including gain error ≤±0.5 LSB and gain match ≤±1 LSB between channels.

What are the critical layout features implemented on the DC1082A-B to preserve LTC1407A performance?

The DC1082A-B implements four key layout features: (1) separate analog and digital ground planes tied at a single point near the LTC1407A exposed pad; (2) matched-length, 50Ω-controlled differential input traces for CH0± and CH1±; (3) localized 10μF tantalum + 0.1μF ceramic bypassing at both VDD and VREF pins; and (4) shielded, short SDO/SCK/CONV routing with minimized loop area. These ensure ≤200ps inter-channel skew, <0.3ps aperture jitter, and validated 80dB CMRR at 100kHz-matching LTC1407A datasheet guarantees.

Can the DC1082A-B be used to evaluate single-ended input configurations?

Yes, the DC1082A-B supports single-ended input operation by grounding either CH0– or CH1– via onboard test points or solder jumpers. In this mode, the LTC1407A retains its 0V to 2.5V unipolar input range and full 14-bit resolution, though common-mode rejection is reduced. The board's input filtering network (51Ω series + 47pF shunt) remains effective for noise suppression, and all timing parameters-including tACQ = 39ns and tTHROUGHPUT = 667ns-remain valid per LTC1407A specification.

What software and host interface options are supported with the DC1082A-B?

The DC1082A-B is compatible with Analog Devices' LTspice® simulation environment and the Linduino® Arduino-compatible platform for firmware-driven control. It interfaces via standard USB-to-SPI adapter (e.g., DC590B) using Linear Technology's QuikEval™ software, which provides real-time waveform capture, FFT analysis, histogram plots, and ENOB/SINAD/THD reporting-all synchronized to the LTC1407A's native 32-clock serial frame format. No custom drivers are required.