SLAAE47A May   2022  – August 2022 DAC11001A , DAC11001B

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2DAC Error Sources
    1. 2.1 Offset Error
    2. 2.2 Gain Error
    3. 2.3 Integral Non Linearity (INL)
    4. 2.4 Noise Sources
  5. 3Error Sources from Reference
    1. 3.1 Initial Accuracy
    2. 3.2 Temperature Drift
    3. 3.3 Load Regulation Error
    4. 3.4 Line Regulation Error
    5. 3.5 0.1 - 10 Hz Peak-to-Peak Noise
    6. 3.6 Example Using REF7025
  6. 4Error Sources from Inverting and Non-Inverting Gain Stage
    1. 4.1 Input Offset Voltage Error
    2. 4.2 Input Offset Voltage Drift Error
    3. 4.3 Power Supply Rejection Ratio (PSRR) Error
    4. 4.4 Open Loop Gain Error
    5. 4.5 Resistor Tolerance Error
  7. 5Example Calculation using DAC11001A
  8. 6Error Summary
  9. 7References
  10. 8Revision History

Abstract

The 20-bit DAC11001A is a highly accurate, low-noise, voltage-output, single-channel, digital-to-analog converters (DACs). The DAC11001 are specified monotonic by design, and offer excellent linearity of less than 4 LSB (max) across all ranges. The unbuffered voltage output offers low noise performance (7 nV/√Hz) in combination with a fast settling time (1µs), making this device an excellent choice for low-noise, fast control-loop, and waveform generation applications. When designing for these applications, its is necessary to calculate the total error contributed by the DAC and the associated circuit components. This report helps in understanding various DAC errors and how to calculate the total error in the system.