Analog Devices Inc. DC1762A-D

Overview

DC1762A-D from Analog Devices (formerly Linear Technology) is a high-performance evaluation board for the LTC2162 16-bit, 65Msps analog-to-digital converter. It enables full characterization of AC performance (77dB SNR, 90dB SFDR), low-jitter sampling (0.07psRMS), and flexible digital output modes (CMOS/DDR CMOS/DDR LVDS) in communications and instrumentation applications.

For engineers reviewing the DC1762A-D datasheet, DC1762A-D pinout, DC1762A-D application, or DC1762A-D equivalent, this board provides validated signal integrity, clock distribution, and layout-optimized analog input path for rapid prototyping of wideband digitization systems requiring <1LSB DNL and 550MHz full-power bandwidth.

Technical Context

The DC1762A-D implements a complete reference design for the LTC2162 ADC, featuring matched differential analog input traces with controlled impedance, ultra-low-noise power delivery (1.8V VDD/OVDD), and configurable clock conditioning via on-board crystal oscillator or external differential clock source. It supports all three output modes-full-rate CMOS, DDR CMOS, and DDR LVDS-with selectable termination and voltage levels.

Board-level features include SPI interface access to LTC2162 configuration registers, on-board VREF and VCM bias generation, jumper-selectable input range (1VP-P to 2VP-P), and optional data randomizer/clock duty cycle stabilizer enablement-all aligned with the LTC2162's production-grade electrical specifications and thermal management requirements (θJA = 29°C/W).

Key Specifications

Availability

DC1762A-D is available at Aetrix Electronics and suitable for cellular base stations, software-defined radios, portable medical imaging, and multichannel data acquisition systems requiring stable component supply and proven high-speed ADC evaluation infrastructure.

Supply support for DC1762A-D 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.

The DC1762A-D belongs to Analog Devices' precision high-speed ADC evaluation platform family, designed specifically to accelerate development of wideband receivers, spectrum analyzers, and test equipment demanding >75dB SNR and sub-0.1ps jitter performance.

FAQ

What is the primary function of the DC1762A-D evaluation board?

The DC1762A-D evaluation board is a fully assembled and tested hardware platform for evaluating the LTC2162 16-bit, 65Msps analog-to-digital converter. It provides all necessary signal conditioning, power regulation, clocking, and digital interface circuitry to validate AC/DC performance, verify timing margins, and prototype system integration without custom PCB design. The DC1762A-D enables immediate bench testing of the LTC2162 under real-world conditions including 77dB SNR and 90dB SFDR operation.

Does the DC1762A-D support all digital output modes of the LTC2162?

Yes, the DC1762A-D supports full-rate CMOS, double-data-rate CMOS, and double-data-rate LVDS output configurations as specified for the LTC2162. Jumper settings and onboard terminations allow seamless mode switching while maintaining signal integrity - including 100Ω differential LVDS termination, adjustable OVDD (1.2V–1.8V), and CMOS output swing control. Each mode has been validated for timing compliance, skew (<0.6ns), and pipeline latency (6–6.5 cycles) per the LTC2162 datasheet.

Can the DC1762A-D be used with external clock sources?

Yes, the DC1762A-D accepts both single-ended and differential external clock inputs via SMA connectors, fully supporting the LTC2162's ENC+/ENC– interface. It includes AC-coupled differential clock paths with 50Ω termination, optional DC biasing, and compatibility with PECL, LVDS, TTL, and CMOS logic families. The board also integrates an on-board crystal oscillator for standalone operation, but external clock use is explicitly validated for jitter-sensitive undersampling applications up to 140MHz input frequencies.

How is analog input range configured on the DC1762A-D?

The DC1762A-D supports selectable differential input ranges of 1VP-P and 2VP-P via onboard jumpers that configure the LTC2162's internal reference scaling and common-mode bias (VCM). Input signals are routed through matched 50Ω differential traces with calibrated gain and offset calibration points accessible via test points. This configuration directly enables evaluation of the LTC2162's ±2LSB INL and ±0.5LSB DNL specs across temperature and frequency - critical for portable medical imaging and NDT applications.

Is SPI programming accessible on the DC1762A-D?

Yes, the DC1762A-D provides direct access to the LTC2162's serial peripheral interface (CS, SCK, SDI, SDO) via header pins and on-board pull-up/pull-down resistors. Engineers can perform full register configuration - including enabling nap/sleep modes, data randomizer, clock duty cycle stabilizer, and output format selection - using standard SPI controllers or Analog Devices' evaluation software. All SPI timing parameters (e.g., tSCK ≥ 40ns, tDO ≤ 125ns) are met per the LTC2162 datasheet, ensuring reliable communication during DC1762A-D operation.