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ADR125:  Precision, Micropower LD0 Voltage Reference in TSOT (5.0 VOUT)

Product Details

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The ADR121/ADR125/ADR127 are a family of micropower, high precision, series mode, band gap references with sink and source capability. The parts feature high accuracy and low power consumption in a tiny package. The ADR12x design includes a patented temperature-drift curvature correction technique that minimizes the nonlinearities in the output voltage vs. temperature characteristics.

The ADR12x is a low dropout voltage reference, requiring only 300 mV for ADR121/ADR125 and 1.45 V for ADR127 above the nominal output voltage on the input to provide a stable output voltage. This low dropout performance, coupled with the low 85 μA operating current, makes the ADR12x ideal for battery-powered applications.

Available in an extended industrial temperature range of −40°C to +125°C, the ADR121/ADR125/ADR127 are housed in the tiny TSOT (UJ-6) package.


  • Battery-powered instrumentation
  • Portable medical equipment
  • Data acquisition systems
  • Automotive


  • Initial accuracy
    A grade: ±0.24%
    B grade: ±0.12%
  • Maximum temperature coefficient
    A grade: 25 ppm/°C
    B grade: 9 ppm/°C
  • Low dropout: 300 mV for ADR121, ADR125
  • High output current: +5 mA/−2 mA
  • Low typical operating current: 85 μA
  • Input range: 2.7 V to 18 V for ADR127
  • Temperature range: −40°C to +125°C
  • Tiny TSOT (UJ-6) package

Pin Configuration Diagram for ADR125


Title Content Type File Type
ADR121/ADR125/ADR127: Precision, Micropower LD0 Voltage References in TSOT Data Sheet (Rev B, 01/2008) (pdf, 597 kB) Data Sheets PDF
CN-0179: Less Than 200 μA, Low Power, 4 mA-to-20 mA, Process Control Current Loop  (pdf, 156 kB) Circuit Note PDF
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