Overview

Features and Benefits

  • 11-bit, 250MSPS output data rate
  • Performance with NSR enabled
    SNR: 75.2 dBFS in a 55 MHz band to 185 MHz at 250 MSPS

    SNR: 72.8 dBFS in an 82 MHz band to 185 MHz at 250 MSPS
  • Performance with NSR disabled
    SNR: 66.4 dBFS up to 185 MHz at 250 MSPS

    SFDR: 87 dBc up to 185 MHz at 250 MSPS
  • Total power consumption:
    358 mW at 250 MSPS
  • 1.8 V supply voltages
  • LVDS (ANSI-644 levels) outputs
  • Integer 1-to-8 input clock divider (625 MHz maximum input)
  • Internal ADC voltage reference
  • Flexible analog input range
    1.4 V p-p to 2.0 V p-p
    (1.75 V p-p nominal)
  • Differential analog inputs with 350 MHz bandwidth
  • Serial port control
  • Energy saving power-down modes
  • User-configurable, built-in self test (BIST) capability

Product Details

The AD6672 is an 11-bit intermediate receiver with sampling speeds of up to 250 MSPS. The AD6672 is designed to support communications applications, where low cost, small size, wide bandwidth, and versatility are desired.

The ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. The 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 core output is connected internally to a noise shaping requantizer (NSR) block. The device supports two output modes that are selectable via the serial port interface (SPI). With the NSR feature enabled, the outputs of the ADCs are processed such that the AD6672 supports enhanced SNR performance within a limited region of the Nyquist bandwidth while maintaining an 11-bit output resolution. The NSR block is programmed to provide a bandwidth of up to 33% of the sample clock. For example, with a sample clock rate of 250 MSPS, the AD6672 can achieve up to 73.6 dBFS SNR for an 82 MHz bandwidth at 185 MHz fIN.

With the NSR block disabled, the ADC data is provided directly to the output with an output resolution of 11 bits. The AD6672 can achieve up to 66.6 dBFS SNR for the entire Nyquist bandwidth when operated in this mode.

APPLICATIONS

  • Communications
  • Diversity radio and smart antenna (MIMO) systems
  • Multimode digital receivers (3G)
    WCDMA, LTE, CDMA2000
    WiMAX, TD-SCDMA
  • I/Q demodulation systems
  • General-purpose software radios

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)

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

IBIS Models

AD6672 IBIS Model

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.

Product Recommendations

AD6672 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.

Discussions

AD6672 Discussions

Can AD6672  work at the conversion rate 256MHz?
22 week(s) ago in 02/15/2017 RF Converters Enable Multiple Wideband Applications
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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.