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Texas Instruments REF4132/REF4132-Q1 Precision Voltage Reference

Texas Instruments REF4132/REF4132-Q1 Precision Voltage Reference is a low-temperature drift (12ppm/°C), low-power, high-precision CMOS voltage reference. The device features ±0.05% initial accuracy, low operating current with power consumption less than 100µA. This device also offers a very low output noise of 15µVp-p/V, which enables its ability to maintain high signal integrity with high-resolution data converters in noise critical systems. Packaged in the same SOT-23-5 package, Texas Instruments REF4132/REF4132-Q1 offers enhanced specifications and pin-to-pin replacement for LM4128 and LM4132.

Stability and system reliability are further improved by the low output-voltage hysteresis of the device and low long-term output voltage drift. Also, the small size and low operating current of the devices (100µA) can benefit portable and battery-powered applications. REF4132 is specified for the wide temperature range of −40°C to +125°C. The REF4132-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • 2.5V, 3V, 3.3V, 4.096V, 5V voltage options
  • ±0.05% (maximum) initial accuracy
  • Low temperature coefficient
    • A grade – 12ppm/°C (maximum)
    • B grade – 30ppm/°C (maximum)
  • −40°C to +125°C operating temperature range
  • ±10mA output current
  • 100µA (maximum) low quiescent current
  • 15µVPP/V output 1/f noise (0.1Hz to 10Hz)
  • Excellent long-term stability 30ppm/1000 hrs
  • Small footprint 5-pin SOT-23 package

Applications

  • Data acquisition (DAQ)
  • PLC analog I/O modules
  • Field transmitters
  • Motor drive control module
  • Battery test equipment
  • LCR meters

Functional Block Diagram

Block Diagram - Texas Instruments REF4132/REF4132-Q1 Precision Voltage Reference

Texas Instruments REF4132/REF4132-Q1 Precision Voltage Reference