SBAA631 January   2025 DAC80508 , INA592 , XTR111 , XTR300 , XTR305

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Analog Output Module Specification
  6. 3Analog Output Module Structure
  7. 4Multi-Channel Output Architectures
    1. 4.1 Fully Integrated DAC Architecture
    2. 4.2 Low Voltage DAC Plus an Output Buffer
    3. 4.3 Track and Hold Multiplexed Output
  8. 5Single-Channel Output Architectures
    1. 5.1 Fully Integrated DAC
    2. 5.2 Low-Voltage DAC Plus an Output Buffer
    3. 5.3 Pulse-Width Modulation Plus a Buffer
  9. 6Output Buffers
    1. 6.1 Unidirectional Current Buffer
    2. 6.2 Bidirectional Current Buffer
    3. 6.3 Voltage Buffer
    4. 6.4 Combined Voltage or Current Buffer
  10. 7Summary
  11. 8References

5.1 Fully Integrated DAC

As mentioned previously, the fully-integrated DAC provides compact, accurate design with slightly higher cost. Single channel high voltage DACs like DAC8760 is capable of bipolar voltage (+/-10V) and unipolar current output (0-20mA) with TUE=0.1%FSR and DNL=1 LSB. The DAC accepts power supply up to +/-20V. The DAC7760 is the 12-b version for less demanding applications.

The application note, Combined Voltage and Current Output with the DACx760 shows how to use DAC8760 for combined voltage and current output as done in the reference design, Combined Voltage and Current Output Terminal for Analog Outputs (AO) in Industrial Applications. The reference design, Single-Channel Industrial Voltage and Current Output Driver, Isolated, EMC/EMI Tested shows separate V/I outputs instead.

If single-channel current-only output is needed, then DAC8750 (16b) or DAC7750 (12b) is the device of choice.