LTC1668

16-Bit, 50Msps DAC

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Overview

Features and Benefits

  • 50Msps Update Rate
  • Pin Compatible 12-Bit, 14-Bit and 16-Bit Devices
  • High Spectral Purity: 87dB SFDR at 1MHz fOUT
  • 5pV-s Glitch Impulse
  • Differential Current Outputs
  • 20ns Settling Time
  • Low Power: 180mW from ±5V Supplies
  • TTL/CMOS (3.3V or 5V) Inputs
  • Small Package: 28-Pin SSOP

Product Details

The LTC1666/LTC1667/LTC1668 are 12-/14-/16-bit, 50Msps differential current output DACs implemented on a high performance BiCMOS process with laser trimmed, thin-film resistors. The combination of a novel current-steering architecture and a high performance process produces DACs with exceptional AC and DC performance. The LTC1668 is the first 16-bit DAC in the marketplace to exhibit an SFDR (spurious free dynamic range) of 87dB for an output signal frequency of 1MHz.

Operating from ±5V supplies, the LTC1666/LTC1667/LTC1668 can be configured to provide full-scale output currents up to 10mA. The differential current outputs of the DACs allow single-ended or true differential operation. The –1V to 1V output compliance of the LTC1666/LTC1667/LTC1668 allows the outputs to be connected directly to external resistors to produce a differential output voltage without degrading the converter’s linearity. Alternatively, the outputs can be connected to the summing junction of a high speed operational amplifier, or to a transformer.

The LTC1666/LTC1667/LTC1668 are pin compatible and are available in a 28-pin SSOP and are fully specified over the industrial temperature range.

Applications

  • Cellular Base Stations
  • Multicarrier Base Stations
  • Wireless Communication
  • Direct Digital Synthesis (DDS)
  • xDSL Modems
  • Arbitrary Waveform Generation
  • Automated Test Equipment
  • Instrumentation

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (4)

Documentation

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Reference Materials

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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.

LTC1668 Material Declaration
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Support & Discussions

LTC1668 Discussions

RE: Questions on how to use LTC1666's I to V convertor OP-AMP
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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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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
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.