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 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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    ADR130 +0.5/+1 Pin Programmable 0.35 5 3 4 2V to 18V -40 to +125 150µA Series TSOT $0.92 Precision, Sub-Band Gap, Series Voltage Reference
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    ADR127 1.25 0.12 3 5 5 +2.7 to +18 -40 to +125 125µA Series TSOT $0.92 1.25V, Precision Micropower LDO Voltage Reference
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    ADR318 1.8 0.27 5 5 5 +2.4 to +15 0 to +70 120µA Series-Low Dropout SOT23 $0.82 1.8 V Precision Voltage Reference
    AD588 10 0.01 1.5 6 10 Vdd-Vss = (Vout+2) to +36 -25 to +85, 0 to +70 10mA Series-Multi/Select Out DIP $15.21 +10 V, +5 V, ±5 V tracking, −5 V, −10 V, High Precision Voltage Reference
    AD688 10 0.02 1.5 6 10 Vdd-Vss = (Vout+2) to 36 -40 to +85, -55 to +125 12mA Series-Multi/Select Out DIP, SOIC $9.19 High Precision ±10 V Reference
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    ADR01 10 0.05 3 20 10 +12 to +40 -40 to +125, 0 to +70 1mA Series SC70, SOIC, TSOT $1.00 Ultra-Compact, Precision 10V Voltage Reference
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    ADR390 2.048 0.19 9 5 5 +2.5 to +15 -40 to +125 120µA Series-Low Dropout TSOT $0.78 2.048 V Micropower, Low Noise Precision Voltage Reference with Shutdown
    ADR370 2.048 0.2 30 70 5 +2.3 to +15 -40 to +125 72µA Series-Low Dropout SOT23 $0.75 2.048 V Tiny Package Precision Reference
    ADR520 2.048 0.2 40 14 n/a n/a, shunt reference -40 to +85 50µA Shunt SC70, SOT23 - 2.048 V High Performance, Low Noise Shunt Reference
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