Analog Devices Inc. DC2183A-A

Overview

DC2183A-A from Analog Devices (formerly Linear Technology) is a high-performance evaluation board for the LTC2107 16-bit, 210Msps analog-to-digital converter. It enables direct sampling of IF frequencies up to 500MHz with 80dBFS SNR and 98dBFS SFDR, aperture jitter of 45fsRMS, and supports both full-rate CMOS and DDR LVDS output modes. Designed for software-defined radio and multi-channel GSM base station receiver front-ends.

For engineers reviewing the DC2183A-A datasheet, DC2183A-A pinout, DC2183A-A application, or DC2183A-A equivalent, this page provides verified board-level specifications, supported ADC configuration modes (PGA gain, dither, output randomization), clock interface details, power sequencing guidance, and compatibility with the LTC2107's 48-lead QFN package and SPI-controlled operation.

Technical Context

The DC2183A-A implements a complete signal chain around the LTC2107, including precision differential analog input conditioning with transformer-coupled or balun-driven paths, programmable gain amplifier (PGA) control via SCK, on-board 2.5V/1.8V LDOs with low-noise regulation, and configurable LVDS/CMOS digital output termination. Clock distribution uses a low-jitter oscillator and duty-cycle stabilizer to meet the LTC2107's 45fsRMS aperture jitter requirement.

It supports dual-mode operation: full-rate CMOS outputs (up to 100Msps) and DDR LVDS outputs (210Msps), with selectable output current (1.75mA or 3.5mA per pair) and internal 100Ω differential termination. The board includes SPI interface headers for register configuration, SHDN control, and real-time monitoring of overflow (OF) and data-ready signals.

Key Specifications

Availability

DC2183A-A is available at Aetrix Electronics and suitable for software-defined radio development, cellular base station prototyping, and spectral analysis instrumentation requiring stable component supply and validated high-speed ADC evaluation platforms.

Supply support for DC2183A-A 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, acquired Linear Technology in 2017 to expand its precision data conversion portfolio.

The DC2183A-A belongs to ADI's LTC evaluation board family, designed specifically to accelerate time-to-prototype for high-speed ADC applications in communications infrastructure, defense electronics, and test & measurement systems.

FAQ

What is the primary function of the DC2183A-A evaluation board?

The DC2183A-A evaluation board is a fully assembled and tested platform for evaluating the LTC2107 16-bit, 210Msps analog-to-digital converter. It provides all necessary power regulation, clock conditioning, analog input interface, and digital output routing to validate the ADC's performance-including 80dBFS SNR, 98dBFS SFDR, and 45fsRMS aperture jitter-in real-world RF receiver designs. DC2183A-A enables rapid characterization without custom PCB development.

Does the DC2183A-A support both CMOS and LVDS output modes of the LTC2107?

Yes, the DC2183A-A supports both output configurations of the LTC2107. It provides jumpers and layout provisions for full-rate CMOS mode (recommended ≤100Msps) and double-data-rate LVDS mode (210Msps), including selectable LVDS output current (1.75mA or 3.5mA) and optional internal 100Ω differential termination per output pair. DC2183A-A's schematic and layout are optimized for signal integrity in both modes per LTC2107 datasheet requirements.

How is the PGA gain setting controlled on the DC2183A-A?

On the DC2183A-A, the LTC2107's programmable gain amplifier (PGA) front-end is controlled via the SCK pin per the LTC2107's parallel programming mode: SCK low selects PGA = 0 (2.4VP-P input range), and SCK high selects PGA = 1 (1.6VP-P input range). The DC2183A-A provides an accessible SCK header and pull-up/pull-down options to configure this setting externally or through the SPI interface when PAR/SER is grounded.

Can the DC2183A-A be used to evaluate dither and output randomization features of the LTC2107?

Yes, the DC2183A-A supports both optional features. Dither is enabled/disabled via SPI register write (address 0x0C, bit D0), and digital output randomization is controlled by the SDI pin in parallel mode (SDI high = enabled) or via SPI (address 0x0C, bit D1). The board includes dedicated headers for SDI and SPI communication, allowing full access to these features during evaluation of DC2183A-A with the LTC2107.

What clock sources and jitter performance are supported by the DC2183A-A?

The DC2183A-A accepts external differential encode clocks (ENC+/ENC–) up to 210MHz and includes a low-phase-noise onboard oscillator option. Its clock path incorporates the LTC2107's integrated duty-cycle stabilizer and is laid out to minimize skew and noise-enabling the 45fsRMS aperture jitter specification of the LTC2107. DC2183A-A's design ensures compliance with the LTC2107's tL/tH timing requirements (1.16ns min high/low time with stabilizer enabled).