AD9747:  Dual 16-Bit 250 MSPS Digital-to-Analog Converters

The AD9741/AD9743/AD9745/AD9746/AD9747 are pin-compatible, high dynamic range, dual digital-to-analog converters (DACs) with 8-/10-/12-/ 14-/16-bit resolutions and sample rates of up to 250 MSPS. ...More

AD9747:  Dual 16-Bit 250 MSPS Digital-to-Analog Converters

Product Description

The AD9741/AD9743/AD9745/AD9746/AD9747 are pin-compatible, high dynamic range, dual digital-to-analog converters (DACs) with 8-/10-/12-/ 14-/16-bit resolutions and sample rates of up to 250 MSPS. The devices include specific features for direct conversion transmit applications, including gain and offset compensation, and they interface seamlessly with analog quadrature modulators, such as the ADL5370.

A proprietary, dynamic output architecture permits synthesis of analog outputs even above Nyquist by shifting energy away from the fundamental and into the image frequency.

Full programmability is provided through a serial peripheral interface (SPI) port. In addition, some pin-programmable features are offered for those applications without a controller.

Product Highlights

  1. Low noise and intermodulation distortion (IMD) enables high quality synthesis of wideband signals.
  2. Proprietary switching output for enhanced dynamic performance.
  3. Programmable current outputs and dual auxiliary DACs provide flexibility and system enhancements.

Applications

  • Wireless infrastructure:
    WCDMA, CDMA2000, TD-SCDMA, WiMAX
  • Wideband communications:
    LMDS/MMDS, point-to-point
  • Instrumentation:
    RF signal generators, arbitrary waveform generators

Features

  • High dynamic range, dual DACs
  • Low noise and intermodulation distortion
  • Single carrier WCDMA ACLR = 80 dBc @ 61.44 MHz IF
  • Innovative switching output stage permits useable outputs beyond Nyquist frequency
  • LVCMOS inputs with dual-port or optional interleaved single-port operation
  • Differential analog current outputs are programmable from 8.6 mA to 31.7 mA full scale
  • Auxiliary 10-bit current DACs with source/sink capability for external offset nulling
  • Internal 1.2 V precision reference voltage source
  • Operates from 1.8 V and 3.3 V supplies
  • 315 mW power dissipation
  • Small footprint, Pb-free, 72-Lead LFCSP

Diagrams

AD9747 Diagram
Functional Block Diagram for AD9747

Specifications

Resolution (Bits) 16bit
DAC Update Rate 250MSPS
DAC Settling Time n/a
# DAC Outputs 2
DAC Type Current Out
DAC Input Format Par
Output FSR Adj(FS Current)
Ref Int/Ext Int/Ext
Supply Vnom Multi(+1.8, +3.3)
Pwr Diss 355mW
Package CSP

Explore Other Products

AD5765 - Complete Quad, 16-Bit, High Accuracy, Serial Input, ±5 V DAC

AD5412 - Single Channel, 12-Bit, Serial Input, Current Source & Voltage Output DAC

AD5724R - Complete, Quad, 12-Bit, Serial Input, Unipolar/Bipolar Voltage Output DAC

AD5422 - Single Channel, 16-Bit, Serial Input, Current Source & Voltage Output DAC

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Part# Bits Update Rate Settling Time # Outputs
AD9788 16 800MSPS - 2
AD9783 16 600MSPS - 2
AD9779 16 1GSPS - 2
AD9747 16 250MSPS - 2
AD9777 16 400MSPS 11ns 2
AD9779A 16 1GSPS - 2
AD9726 16 400MSPS - 1
AD9786 16 500MSPS - 1
AD9778A 14 1GSPS - 2
AD9746 14 250MSPS - 2
AD9775 14 400MSPS 11ns 2
Pricing, Packaging & Availability

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Model
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Status
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  • Pre-Release: The model has not been released to general production, but samples may be available.
  • Production: The model is currently being produced, and generally available for purchase and sampling.
  • Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
  • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
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.

Production Availability
This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

RoHS Compliant
Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

*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.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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