Analog Devices Inc. DC1763A-G

Overview

DC1763A-G from Analog Devices (formerly Linear Technology) is a fully assembled, tested demonstration board for the LTC2271 - a 16-bit, dual-channel, 20Msps serial LVDS analog-to-digital converter. It delivers 84.1dB SNR and 99dB SFDR at 5MHz input, operates from a single 1.8V supply, and supports 1-/2-/4-lane LVDS output serialization. The board enables rapid evaluation of high-fidelity data acquisition in portable medical imaging and software-defined radio systems.

For engineers reviewing the DC1763A-G datasheet, DC1763A-G pinout, DC1763A-G application, or DC1763A-G equivalent, this page provides verified hardware configuration details, signal integrity validation methods, FPGA interface timing guidance, and direct comparison with alternative ADC evaluation platforms supporting simultaneous sampling and low-power LVDS serialization.

Technical Context

The DC1763A-G implements the LTC2271 in its 52-lead QFN package with full analog front-end conditioning, including transformer-coupled differential input paths, precision VCM biasing, and matched 100Ω on-die LVDS termination. It integrates a dedicated clock distribution network with adjustable duty-cycle stabilization to maintain sub-100fs jitter performance across encode modes.

Board-level design enforces strict separation between analog sampling paths (CH1/CH2), digital serialization lanes (OUT1A–D+/–, OUT2A–D+/–), and SPI configuration interface (CS/SCK/SDI/SDO). All critical signals are impedance-controlled (100Ω differential), and power delivery uses multi-stage decoupling (0.1μF ceramic + 1μF tantalum per supply rail).

Key Specifications

Availability

DC1763A-G is available at Aetrix Electronics and suitable for portable medical imaging, software-defined radio prototyping, and low-power instrumentation requiring stable component supply, traceable evaluation hardware, and documented signal integrity validation.

Supply support for DC1763A-G 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 aerospace, industrial, communications, and healthcare markets.

The DC1763A-G belongs to ADI's Precision Signal Chain Evaluation Platform family, designed specifically to accelerate validation of high-speed, low-noise ADCs in demanding RF and medical applications where SNR, SFDR, and power efficiency are system-critical.

FAQ

What is the primary function of the DC1763A-G evaluation board?

The DC1763A-G evaluation board is a ready-to-use hardware platform for evaluating the LTC2271 dual-channel 16-bit 20Msps ADC. It provides complete analog signal conditioning, LVDS serialization, SPI configuration, and clock management circuitry - enabling immediate functional validation and performance benchmarking without custom PCB development. The DC1763A-G allows engineers to verify real-world SNR, SFDR, and timing behavior under controlled test conditions before integrating the LTC2271 into their final system.

Does the DC1763A-G support both differential and single-ended encode inputs?

Yes, the DC1763A-G supports both differential and single-ended encode modes as implemented by the underlying LTC2271. Differential encode (ENC+/ENC–) is pre-configured with proper AC coupling and biasing for optimal jitter performance; single-ended mode is enabled by grounding ENC– and driving ENC+ with a 1.8V square wave. The board's layout preserves signal integrity for either mode, and the DC1763A-G user guide documents jumper settings and measurement points for both configurations.

Can the DC1763A-G be used with FPGA-based receivers that require frame-aligned LVDS data streams?

Yes, the DC1763A-G delivers synchronized LVDS data and control signals essential for FPGA interfacing: FR+ and FR– provide frame start alignment, DCO+ and DCO– deliver serialized data clock, and all channel outputs (OUT1A–D+/–, OUT2A–D+/–) are phase-matched within ±100ps. The board's firmware and documentation include timing diagrams and register settings to configure lane count, data format, and pipeline latency - ensuring deterministic synchronization with Xilinx or Intel FPGA transceivers.

What input signal conditioning options does the DC1763A-G provide for the LTC2271 analog inputs?

The DC1763A-G offers three configurable analog input paths: transformer-coupled (with MA/COM MABAES0060 balun), active differential amplifier (using LT6350), and DC-coupled amplifier (with LT6350 configured for common-mode tracking). Each path includes 0.1μF AC coupling, 25Ω series termination, and VCM1/VCM2 bias networks. Input range selection (1.05VP-P or 2.1VP-P) is controlled via the SENSE pin, and all paths are validated for ≤–110dBc crosstalk and ≤1.44LSB_RMS transition noise - matching LTC2271 datasheet specifications.

Is the DC1763A-G compatible with standard industry test equipment such as spectrum analyzers and logic analyzers?

Yes, the DC1763A-G features SMA connectors for analog inputs (AIN1+/–, AIN2+/–), clock input (ENC+/–), and LVDS outputs (FR, DCO, OUT1x, OUT2x), all impedance-matched to 50Ω or 100Ω differential. Digital outputs comply with ANSI/TIA/EIA-644-A LVDS standards, enabling direct connection to Keysight, Tektronix, or LeCroy logic analyzers with LVDS probes. Analog outputs are calibrated for –1dBFS full-scale, allowing direct spectral analysis using spectrum analyzers with 50Ω inputs and appropriate attenuation.