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Texas Instruments REF20xx Dual Output Voltage References

Texas Instruments REF20xx Dual Output Voltage References provide a reference voltage (VREF) for the Analog-to-Digital (ADC) and a second highly-accurate voltage (VBIAS). This reference voltage can be used to bias the input bipolar signals. The REF20xx voltage references offer good temperature drift (8 ppm/°C, max) and initial accuracy (0.05%) on both the VREF and VBIAS outputs while operating at a quiescent-current <430μA. These VREF and VBIAS outputs track each other with a precision of 6 ppm/°C (max) across the temperature range of -40°C to 85°C range. The REF20xx voltage references feature low drift, low-power, low dropout voltage, low quiescent current, high-output current, good temperature drift performance, and improved corrosion resistance. These voltage references are ideal for Digital Signal Processing (DSP), current sensing, medical equipment, single-supply system, and data acquisition system.

Features

  • Two outputs VREF and VREF/2, for convenient use in single-supply systems
  • Excellent temperature drift performance:
    • 8 ppm/°C (max) from -40°C to 125°C
  • ±0.05% (max) high initial accuracy
  • VREF and VBIAS tracking over temperature:
    • 6 ppm/°C (max) from -40°C to 85°C
    • 7 ppm/°C (max) from -40°C to 125°C
  • 10mV low dropout voltage
  • ±20mA high output current
  • 360μA low quiescent current
  • 3 ppm/V line regulation
  • 8 ppm/mA load regulation
  • SOT23-5 microsize package

Applications

  • Digital Signal Processing (DSP)
    • Power inverters
    • Motor controls
  • Current sensing
  • Medical equipment
  • Industrial process controls
  • Data acquisition systems
  • Single-supply systems

Block Diagram

Block Diagram - Texas Instruments REF20xx Dual Output Voltage References
Publicado: 2018-07-12 | Actualizado: 2022-12-07