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Texas Instruments REF19xx Low-Drift Low-Power Voltage References

Texas Instruments REF19xx Low-Drift Low-Power Voltage References offers excellent temperature drift (25 ppm/°C, max) and initial accuracy (0.1%) on both the VREF and VBIAS outputs while operating at a quiescent current less than 430µA. The VREF and VBIAS outputs track each other with a precision of 6ppm/°C (max) across the temperature range of -40°C to 85°C. All these features increase the precision of the signal chain and decrease board space while reducing the cost of the system as compared to a discrete solution. The extremely low dropout voltage of only 10mV allows operation from very low input voltages, which can be very useful in battery-operated systems. Both the VREF and VBIAS voltages have the same excellent specifications and can sink and source current equally well. Texas Instruments REF19xx with very good long-term stability and low noise levels make these devices ideal for high-precision industrial applications.

Features

  • Two outputs, VREF and VREF/ 2, for convenient use in single-supply systems
  • Excellent temperature drift performance
    • 25ppm/°C (max) from -40°C to 125°C
  • ±0.1% (max) high initial accuracy 
  • VREF and VBIAS tracking over temperature
    • 6ppm/°C (max) from -40°C to 85°C
    • 7ppm/°C (max) from -40°C to 125°C
  • SOT23-5 microsize package
  • 10mV low dropout voltage 
  • ±20mA high output current 
  • 360µA low quiescent current 
  • 3ppm/V line regulation 
  • 8ppm/mA load regulation

Applications

  • Digital signal processing
    • Power inverters
    • Motor controls
  • Current sensing
  • Industrial process controls
  • Medical equipment
  • Data acquisition systems
  • Single-supply systems

Application Example

Application Circuit Diagram - Texas Instruments REF19xx Low-Drift Low-Power Voltage References
เผยแพร่แล้ว: 2557-10-24 | อัปเดตแล้ว: 2565-03-11