Microchip Technology MCP4921 Digital-to-Analog Converters

Microchip Technology MCP4921 Digital-to-Analog Converters (DACs) are 2.7V to 5.5V low-power, low DNL,12-bit DACs with SPI interface with optional 2x buffered output. These DACs utilize a resistive string architecture with its inherent advantages of low DNL error, low-ratio metric temperatures coefficient, and fast settling time. The MCP4921 converters incorporate a Power-on Reset (POR) circuit to ensure reliable power-up. These MCP4921 DACs come in PDIP, SOIC, MSOP, and TSSOP packages. These digital-to-analog converters offer high-accuracy and low-noise performance for industrial applications where calibrations of signals are required.

Features

  • 12-bit resolution
  • ±0.2 LSB DNL (typical)
  • ±2 LSB INL (typical)
  • Single/dual-channel
  • Rail-to-rail output
  • SPI™ interface with 20MHz clock support
  • Simultaneous latching of the dual DACs w/LDAC
  • Fast setting time of 4.5μs
  • Selectable unity or 2x gin output
  • 450kHz multiplier mode
  • External VREF input
  • 2.7V to 5.5V single-supply operation
  • -40°C to +125°C operating temperature range

Applications

  • Setpoint or offset trimming
  • Sensor calibration
  • Digitally-controlled multiplier/divider
  • Portable instrumentation (battery-powered)
  • Motor feedback loop control

Block Diagram

Block Diagram - Microchip Technology MCP4921 Digital-to-Analog Converters
Published: 2019-12-30 | Updated: 2023-06-13