Overview

Features and Benefits

  • SNR = 71.5 dBFS at 185 MHz Ain and 250 MSPS
  • SFDR = 85 dBc at 185 MHz Ain and 250 MSPS
  • -152.0 dBFS/Hz Input Noise @ 200 MHz, -1dBFS Ain and 250MSPS
  • Total Power consumption: 785mW @ 250 MSPS
  • 1.8 V analog and LVDS output supply operation
  • Integer 1-to-8 input clock divider (625 MHz maximum input)
  • Integrated dual-channel ADC
  • See datasheet for additional features

Product Details

The AD9643 is a dual 14-bit, analog-to-digital converter (ADC) with sampling speeds up to 250 MSPS. The AD9643 is designed to support communications applications where low cost, small size, wide bandwidth and versatility are desired.

The dual ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth inputs supporting a variety of user-selectable input ranges. An integrated voltage reference eases design considerations. A duty cycle stabilizer is provided to compensate for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance.

The ADC output data are routed directly to the two external 14- bit LVDS output ports and formatted either as interleaved or channel multiplexed.

Flexible power-down options allow significant power savings, when desired.

Programming for setup and control are accomplished using a 3- wire SPI-compatible serial interface.

The AD9643 is available in a 64-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C.

APPLICATIONS
  • Communications
  • Diversity radio systems
  • Multimode digital receivers (3G)
    TD-SCDMA, WiMax, WCDMA,
    CDMA2000, GSM, EDGE, LTE
  • I/Q demodulation systems
  • Smart antenna systems
  • General-purpose software radios
  • Ultrasound equipment
  • Broadband data applications

PRODUCT HIGHLIGHTS

  1. Integrated dual, 14-bit, 170/210/250 MSPS ADC.
  2. Operation from a single 1.8V supply and a separate digital output driver supply accommodating LVDS outputs.
  3. Proprietary differential input maintains excellent SNR performance for input frequencies up to 300 MHz.
  4. SYNC input allows synchronization of multiple devices.
  5. 3-pin, 1.8V SPI port for register programming and register readback.
  6. Pin compatibility with the AD9613 allowing a simple migration down from 14 bits to 12 bits.

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Markets & Technology

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

Documentation

Tools & Simulations

Virtual Eval - BETA

Virtual Eval is a web application to assist designers in product evaluation of ADCs, DACs, and other ADI products. Using detailed models on Analog’s servers, Virtual Eval simulates crucial part performance characteristics within seconds. Configure operating conditions such as input tones and external jitter, as well as device features like gain or digital down-conversion. Performance characteristics include noise, distortion, and resolution, FFTs, timing diagrams, response plots, and more.

VirtualEval

Design Tools

Visual Analog

For designers who are selecting or evaluating high speed ADCs, VisualAnalog™ is a software package that combines a powerful set of simulation and data analysis tools with a user-friendly graphical interface.

Reference Designs (1)

Product Recommendations

AD9643 Companion Parts

Recommended Clock Drivers

Recommended Driver Amplifiers

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.