ADR121:  Precision, Micropower LD0 Voltage Reference in TSOT (2.5 VOUT)

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 ...More

ADR121:  Precision, Micropower LD0 Voltage Reference in TSOT (2.5 VOUT)

Product Description

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.

Applications

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

    • Data Sheet, Rev. B, 1/08

    Features

    • 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

    Diagrams

    ADR121 Diagram
    Pin Configuration Diagram for ADR121

    Specifications

    Vout 2.5
    Initial Accuracy (%) 0.12
    Ref Out TC (ppm/C) 3ppm/C
    Supply Voltage Range (V) +2.8 to +18
    Supply Current (max) 125µA
    Ref Output Current (mA) 5mA
    0.1-10 Hz Noise (µV p-p) 10µV p-p
    Temp Range(s) -40 to +125
    Package TSOT
    Reference Type Series-Low Dropout

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