DAC81408 8-channel 16-bit high-voltage output DAC with integrated internal reference | TI.com

DAC81408 (ACTIVE)

8-channel 16-bit high-voltage output DAC with integrated internal reference

 

Description

The DAC81408, DAC71408, and DAC61408 (DACx1408) are a pin-compatible family of 8-channel, buffered, high-voltage output digital-to-analog converters (DACs) with 16-, 14- and 12-bit resolution. The DACx1408 includes a low drift, 2.5-V internal reference, eliminating the need for an external precision reference in most applications. These devices are specified monotonic and provide high linearity of ±1 LSB INL.

A user selectable output configuration enables full-scale bipolar output voltages: ±20 V, ±10 V, ±5 V or ±2.5 V and full-scale unipolar output voltages: 40 V, 20 V, 10 V or 5 V. The full-scale output range for each DAC channel is independently programmable. The integrated DAC output buffers can sink or source up to 25 mA thus limiting the need of additional operational amplifiers. Each pair of channels can be configured to provide a differential output with offset calibration. The three dedicated A-B toggle pins enable dither signal generation with up to three possible frequencies.

The DACx1408 incorporates a power-on-reset circuit that connects the DAC outputs to ground at power-up. The outputs remain at this state until the device registers are properly configured for operation.

Communication to the DACx1408 is performed through a 4-wire serial interface that supports operation from 1.7 V to 5.5 V.

Features

  • Performance
    • Specified Monotonic at 16-Bit Resolution
    • INL: ±1 LSB Maximum at 16-Bit Resolution
    • TUE: ±0.1% of FSR Maximum
  • Integrated 2.5-V Precision Internal Reference
    • Initial Accuracy: ±2.5 mV Maximum
    • Low Drift: 5 ppm/˚C Typical
  • Flexible Output Configuration
    • Output Range: ±2.5 V, ±5 V, ±10 V, ±20 V
      0 to 5 V, 0 to 10 V, 0 to 20 V, 0 to 40 V
    • Differential Output Mode
  • High Drive Capability: ±25 mA with 1.5 V from Supply Rails
  • Three Dedicated A-B Toggle Pins for Dither Signal Generation
  • Analog Temperature Output
    • Sensor Gain of –4 mV/˚C
  • 50-MHz SPI Compatible Serial Interface
    • 4-Wire Mode, 1.7-V to 5.5-V Operation
    • Daisy Chain Operation
    • CRC Error Check
  • Temperature Range: –40˚C to +125˚C
  • Small Package
    • 6 mm × 6 mm, 40-Pin VQFN

All trademarks are the property of their respective owners.

Parametrics

Compare all products in Precision DACs (<=10MSPS) Email Download to Excel
Part number Order Resolution (Bits) Architecture DAC channels Interface Output range (Max) (mA/V) Output range (Min) (mA/V) Settling time (µs) Output type Reference: type Rating Operating temperature range (C) Features
DAC81408 Order now 16     R-2R     8     SPI     20     -20     20     Buffered Voltage     Int     Catalog     -40 to 125     Integrated Temp Sensor    
DAC61408 Samples not available 12     R-2R     8     SPI     20     -20     12     Buffered Voltage     Int     Catalog     -40 to 125     Integrated Temp Sensor    
DAC71408 Samples not available 14     R-2R     8     SPI     20     -20     12     Buffered Voltage     Int     Catalog     -40 to 125     Integrated Temp Sensor    
DAC7718 Order now 12     String     8     SPI     33     -16.5     15     Buffered Voltage     Ext     Catalog     -40 to 85     On-chip Offset and Gain Calibration
SDO    
DAC7728 Order now 12     String     8     Parallel     33     -16.5     15     Buffered Voltage     Ext     Catalog     -40 to 105     On-chip Offset and Gain Calibration
Reset to Mid-Scale    
DAC7734 Order now 16     R-2R     4     SPI     10     -10     10     Buffered Voltage     Ext     Catalog     -40 to 85