Features and Benefits

  • Precision 10ppm/°C Max Reference
  • Maximum INL Error: ±4LSB at 16 Bits
  • Guaranteed Monotonic over Temperature
  • Selectable Internal or External Reference
  • 2.7V to 5.5V Supply Range (LTC2656-L)
  • Integrated Reference Buffers
  • Ultralow Crosstalk Between DACs(<1nV•s)
  • Power-On-Reset to Zero-Scale/Mid-scale
  • Asynchronous LDAC Update Pin
  • Tiny 20-Lead 4mm × 5mm QFN and 20-Lead Thermally Enhanced TSSOP Packages

Product Details

The LTC2656 is a family of octal 16-/12-bit rail-to-rail DACs with a precision integrated reference. The DACs have built-in high performance, rail-to-rail, output buffers and are guaranteed monotonic.The LTC2656-L has a full-scale output of 2.5V with the integrated 10ppm/°C reference and operates from a single 2.7V to 5.5V supply. The LTC2656-H has a full-scale output of 4.096V with the integrated reference and operates from a 4.5V to 5.5V supply. Each DAC can also operate with an external reference, which sets the DAC full-scale output to two times the external reference voltage.

These DACs communicate via a SPI/MICROWIRE compatible 4-wire serial interface which operates at clock rates up to 50MHz. The LTC2656 incorporates a power-on reset circuit that is controlled by the PORSEL pin. If PORSEL is tied to GND the DACs reset to zero-scale. If PORSEL is tied to VCC, the DACs reset to mid-scale.
  • Mobile Communications
  • Process Control and Industrial Automation
  • Instrumentation
  • Automatic Test Equipment
  • Automotive
  • Product Lifecycle icon-recommended Production

    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 (2)

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    IBIS Models

    Product Recommendations

    LTC2656 Companion Parts

    Recommended µModule Isolator

    Recommended D/A Converters

    Design Resources

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    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.