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ADR127:  Precision, Micropower LD0 Voltage Reference in TSOT (1.25 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 tiny package. The ADR12x design includes a patented temperature-drift curvature correction technique that minimizes the nonlinearities in the output voltage vs. temperature characteristics.

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ADR127:  Precision, Micropower LD0 Voltage Reference in TSOT (1.25 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

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    • 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
    • Vout: 1.25
    • Initial Accuracy (%): 0.12
    • Ref Out TC (ppm/C): 3ppm/C
    • Supply Voltage Range (V): +2.7 to +18
    • Supply Current : 125µA
    • Ref Output Current (mA): 5mA
    • 0.1-10 Hz Noise (µV p-p): 5µV p-p
    • Temp Range(s): -40 to +125
    • Package: TSOT
    • Reference Type: Series

    Pin Configuration Diagram for ADR127

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    Part# Vout Initial Accuracy (%) Ref Out TC (ppm/C) 0.1-10 Hz Noise (µV p-p) Ref Output Current (mA) Supply Voltage Range (V) Temp Range(s) Supply Current Reference Type Package Price* (1000-4999) Product Description
    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
    AD584 +2.5/+5/+7.5/+10 Prog 0.05 5 50 10 +4.5 to +30 -55 to +125, 0 to +70 1mA Series-Multi/Select Out DIP, TO-92 $3.05 10.000 V, 7.500 V, 5.000 V and 2.500 V, Pin Programmable Precision Voltage Reference
    ADR510 1.0 0.35 70 4 n/a n/a, shunt ref -40 to +85 n/a Shunt SOT23 $0.60 1.0 V Precision, Low Noise, Shunt Voltage Reference
    AD1580 1.2 0.08 50 5 n/a n/a, shunt ref -40 to +85 n/a Shunt SC70, SOT23 $0.61 1.2 V Micropower, Precision Shunt Voltage Reference
    ADR512 1.2 0.3 60 4 n/a n/a shunt ref -40 to +85 n/a Shunt SOT23 $0.60 1.2 V Precision, Low Noise Shunt Voltage Reference
    ADR280 1.2 0.4 5 2.2 100 +2.4 to +5.5 -40 to +85 16µA Series SC70, SOT23 $0.76 1.20 V, Low Noise, Low Power, High PSRR, Precision Voltage Reference
    AD589 1.2 1.2 10 5 n/a n/a, Shunt Type Reference -55 to +125, 0 to +70 50µA Shunt Metal Can, SOIC $1.33 Two-Terminal IC 1.2 V Shunt Reference
    ADR1581 1.25 0.12 50 4.5 n/a n/a, shunt ref -40 to +85 n/a Shunt SOT23 $0.61 1.25 V Micropower, Precision Shunt Voltage Reference
    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
    ADR827 1.25 0.4 15 8 5 +2.7V to +15V -40 to +125 400µA Series MSOP $1.11 Low Power, Precision Reference and Op Amp
    ADR1500 1.2875 0.2 170 5 n/a n/a, shunt reference -40 to +85 n/a Shunt SC70 $1.03 1.2875 V Micropower, Shunt Voltage Reference
    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
    AD581 10 0.05 5 40 10 +12 to +30 -55 to +125, 0 to +70 1mA Series TO-52 $4.14 High Precision 10 V IC Reference
    AD587 10 0.05 5 4 10 +13.5 to +36 -55 to +125, 0 to +70 4mA Series DIP, SOIC $2.55 High Precision 10 V Reference
    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
    REF01 10 0.3 3 30 10 +12 to +40 -40 to +85, -55 to +125 1.4mA Series DIP, SOIC, TO-99 $1.21 +10V Precision Voltage Reference
    ADR440 2.048 0.05 1 1 10 +3 to +18 -40 to +125 3.75mA Series-Low Dropout DIP, MSOP, SOIC $2.53 2.048 V, Ultralow Noise, LDO XFET® Voltage Reference with +10/-5 mA Output Current Capability
    ADR420 2.048 0.05 1 1.75 10 +4.0 to +18 -40 to +125 500µA Series MSOP, SOIC $2.82 2.048 V XFET® Voltage Reference
    ADR430 2.048 0.05 1 3.5 30 +4.1 to +18 -40 to +125 800µA Series MSOP, SOIC $2.96 2.048 V High Precision, Low Noise XFET® Reference with Output Sink and Source Capability
    ADR5040 2.048 0.1 10 - n/a n/a, is shunt ref -40 to +125 n/a Shunt SC70, SOT23 $0.30 Precision Micropower Shunt Mode Voltage Reference, 2.048 V Output
    REF191 2.048 0.1 2 20 30 +2.3 to +15 -40 to +85 45µA Series-Low Dropout DIP, SOIC $1.38 2.048, Precision Micropower, Low Dropout, Low Voltage Reference
    ADR360 2.048 0.15 9 6.8 5 +2.35 to +15 -40 to +125 190µA Series-Low Dropout TSOT $0.78 Low Power, Low Noise Voltage Reference w/ Sink/Source Capability, 2.048 VOUT
    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
    ADR380 2.048 0.24 5 5 5 +2.4 to +18 -40 to +85 120µA Series-Low Dropout SOT23 $0.76 2.048 V Bandgap Voltage Reference
    REF43 2.5 0.02 25 4 20 +4.5 to +40 -40 to +85 450µA Series DIP, SOIC $3.69 +2.5V Low Power Precision Voltage Reference
    AD780 2.5 0.04 3 4 10 +4 to +36 -40 to +85 1mA Series-Multi/Select Out DIP, SOIC $3.65 2.5 V/3.0 V Ultrahigh Precision Bandgap Voltage Reference
    ADR441 2.5 0.04 1 1.2 10 +3 to +18 -40 to +125 3.75mA Series-Low Dropout DIP, MSOP, SOIC $2.53 2.5 V, Ultralow Noise, LDO XFET® Voltage Reference with +10/-5 mA Output Current Capability
    ADR431 2.5 0.04 1 3.5 30 +4.5 to +18 -40 to +125 800µA Series MSOP, SOIC $2.96 2.5 V High Precision, Low Noise XFET® Reference with Output Sink and Source Capability
    ADR421 2.5 0.04 1 1.75 10 +4.5 to +18 -40 to +125 500µA Series MSOP, SOIC $2.82 2.5 V XFET® Voltage Reference
    AD1582 2.5 0.08 50 70 5 +2.7 to +12 -40 to +125 70µA Series-Low Dropout SOT23 $0.61 2.5V Micropower, Precision Series Mode Voltage Reference
    ADR291 2.5 0.08 3 8 5 +3 to +15 -40 to +125 12µA Series-Low Dropout SOIC, TSSOP $1.78 Precision, Micropower 2.5 V XFET™ Reference
    REF192 2.5 0.08 2 25 30 +2.6 to +15 -40 to +85 45µA Series-Low Dropout DIP, SOIC, TSSOP $1.38 Precision Micropower, Low Dropout, Low Voltage References, Nom. Vo=2.50 V
    ADR5041 2.5 0.1 10 - n/a n/a, shunt ref -40 to +125 n/a Shunt SC70, SOT23 $0.30 Precision, Micropower, Shunt Mode Voltage Reference, Vout = 2.5V
    ADR03 2.5 0.1 3 10 10 +4.5 to +40 -40 to +125 1mA Series SC70, SOIC, TSOT $1.03 Ultra-Compact, Precision 2.5 V Voltage Reference
    ADR121 2.5 0.12 3 10 5 +2.8 to +18 -40 to +125 125µA Series-Low Dropout TSOT $0.92 2.5V, Precision Micropower LDO Voltage Reference
    ADR361 2.5 0.12 9 8.25 5 +2.8 to +15 -40 to +125 190µA Series-Low Dropout TSOT $0.78 Low Power, Low Noise Voltage Reference w/ Sink/Source Capability, 2.5 Vout
    ADR391 2.5 0.16 9 5 5 +2.8 to +18 -40 to +125 120µA Series-Low Dropout TSOT $0.78 2.5V Micropower, Low Noise Precision Voltage Reference with Shutdown
    ADR821 2.5 0.2 15 16 5 +2.8V to +15V -40 to +125 400µA Series MSOP $1.11 Low Power, Precision Reference and Op Amp
    AD680 2.5 0.2 20 8 10 +4.5 to +36 -40 to +85, 0 to +70 250µA Series DIP, SOIC, TO-92 $1.76 2.5V, Low Power Bandgap Reference
    ADR525 2.5 0.2 40 18 n/a n/a, shunt reference -40 to +85 50µA Shunt SC70, SOT23 $0.48 2.5 V High Performance, Low Noise Shunt Reference
    REF03 2.5 0.2 10 6 20 +4.5 to +33 -40 to +85 1.4mA Series DIP, SOIC $1.21 Precision Voltage Reference Providing Stable +2.5 V Output
    ADR381 2.5 0.24 3 5 5 +2.8 to +18 -40 to +85 120µA Series-Low Dropout SOT23 $0.76 2.5 V Bandgap Voltage Reference
    AD580 2.5 0.4 10 8 10 +4.5 to +30 -55 to +125, 0 to +70 1.5mA Series TO-52 $2.67 High Precision 2.5 V IC Reference
    ADR443 3 0.04 1 1.4 10 +3.5 to +18 -40 to +125 3.75mA Series-Low Dropout MSOP, SOIC $2.53 3.0 V High Precision, LDO XFET® Reference for High Performance Sigma-Delta Converters
    ADR423 3 0.04 1 1 10 +5.0 to +18 -40 to +125 500µA Series MSOP, SOIC $2.82 3.0V XFET® Voltage Reference
    ADR433 3 0.05 1 3.75 30 +5.0 to +18 -40 to +125 800µA Series MSOP, SOIC $2.96 3.0 V High Precision, Low Noise XFET® Reference with Output Sink and Source Capability
    ADR5043 3 0.1 10 - n/a n/a, shunt REF -40 to +125 n/a Shunt SC70, SOT23 $0.30 Precision, Micropower, Shunt Mode Voltage Reference (3.0 Vout)
    ADR363 3 0.1 9 8.7 5 +3.3 to +15 -40 to +125 190µA Series-Low Dropout TSOT $0.78 Low Power, Low Noise Voltage Reference w/ Sink/Source Capability, 3.0 Vout
    ADR06 3 0.1 3 10 10 +5 to +40 -40 to +125 0.65mA Series SC70, SOIC, TSOT $1.03 Ultracompact, Precision 3 V Voltage Reference
    AD1583 3 0.1 50 85 5 +3.2 to +12 -40 to +125 70µA Series-Low Dropout SOT23 $0.61 3.0V Micropower, Precision Series Mode Voltage Reference
    ADR530 3 0.2 40 22 n/a n/a, shunt ref -40 to +85 50µA Shunt SC70, SOT23 $0.48 3.0 V High Performance, Low Noise Shunt Reference
    REF193 3 0.33 10 30 30 +3.2 to +15 -40 to +85 45µA Series-Low Dropout SOIC $1.38 Precision Micropower, Low Dropout, Low Voltage Reference, Nom. Vo=3.0 V
    ADR366 3.3 0.125 9 9.3 5 +3.6 to +15 -40 to +125 190µA Series-Low Dropout TSOT $0.78 Low Power, Low Noise Voltage Reference w/ Sink/Source Capability, 3.3 Vout
    REF196 3.3 0.3 10 33 30 +3.4 to +15 -40 to +85 45µA Series-Low Dropout SOIC, TSSOP $1.38 Precision Micropower, Low Dropout, Low Voltage References, Nom. Vo = 3.3 V
    ADR444 4.096 0.04 1 1.8 10 +4.6 to +18 -40 to +125 3.75mA Series-Low Dropout MSOP, SOIC $2.53 4.096 V High Precision, LDO XFET® Reference for use with High Performance Sigma-Delta Converters
    ADR434 4.096 0.04 1 6.25 30 +6.1 to +18 -40 to +125 800µA Series MSOP, SOIC $2.96 4.096 V, High Precision, Low Noise XFET® Reference with Output Sink and Source Capability
    REF198 4.096 0.05 2 40 30 +3.4 to +15 -40 to +85 45µA Series-Low Dropout DIP, SOIC, TSSOP $1.38 Precision Micropower, Low Dropout, Low Voltage References, Nom. Vo = 4.096 V
    ADR292 4.096 0.07 3 12 5 +4.5 to +18 -40 to +125 12µA Series SOIC, TSSOP $1.78 Precision, Micropower 4.096 V XFET™ Reference
    ADR5044 4.096 0.1 10 - n/a n/a, shunt REF -40 to +125 n/a Shunt SC70, SOT23 $0.30 Precision, Micropower ,Shunt Mode Voltage Reference (4.096 Vout)
    ADR364 4.096 0.1 9 11 5 +4.4 to +15 -40 to +125 190µA Series-Low Dropout TSOT $0.78 Low Power, Low Noise Voltage Reference w/ Sink/Source Capability, 4.096 VOUT
    AD1584 4.096 0.1 50 110 5 +4.3 to +12 -40 to +125 70µA Series-Low Dropout SOT23 $0.61 4.096V, Micropower, Precision Series Mode Voltage Reference
    ADR392 4.096 0.12 9 7 5 +4.3 to +15 -40 to +125 120µA Series-Low Dropout TSOT $0.78 4.096 V Micropower, Low Noise Precision Voltage Reference with Shutdown
    ADR540 4.096 0.2 40 30 n/a n/a, shunt ref -40 to +85 50µA Shunt SC70, SOT23 $0.99 4.096 V High Performance, Low Noise Shunt Reference
    ADR439 4.5 0.04 1 7.5 30 +6.5 to +18 -40 to +125 800µA Series MSOP, SOIC $2.96 4.5 V High Precision, Low Noise XFET® Reference with Output Sink and Source Capability
    REF194 4.5 0.044 2 45 30 +4.6 to +15 -40 to +85 45µA Series-Low Dropout DIP, SOIC $1.38 Precision Micropower, Low Dropout, Low Voltage References, Nom. Vo = 4.5 V
    ADR445 5 0.04 1 2.25 10 +5.5 to +18 -40 to +125 3.75mA Series-Low Dropout MSOP, SOIC $2.53 5.0 V High Precision, LDO XFET® Reference for use with High Performance Sigma-Delta Converters
    ADR435 5 0.04 1 8 30 +7.0 to +18 -40 to +125 800µA Series MSOP, SOIC $2.96 5.0 V High Precision, Low Noise XFET® Reference with Output Sink and Source Capability
    ADR425 5 0.04 1 3.4 10 +7.0 to +18 -40 to +125 500µA Series MSOP, SOIC $2.82 5.0V XFET® Voltage Reference
    AD586 5 0.04 2 4 10 +10.8 to +36 -55 to +125, 0 to +70 3mA Series DIP, SOIC $2.78 High Precision 5 V Reference
    ADR02 5 0.06 3 10 10 +7.0 to +40 -40 to +125, 0 to +70 1mA Series SC70, SOIC, SOT23, TSOT $1.03 Ultra-Compact, Precision +5.0 V Reference
    ADR293 5 0.06 3 15 5 +6.0 to +15 -40 to +125 15µA Series SOIC, TSSOP $1.78 Low Noise Micropower Precision Voltage 5.0 V Reference
    ADR365 5 0.08 9 12.8 5 +5.3 to +15 -40 to +125 190µA Series-Low Dropout TSOT $0.78 Low Power, Low Noise Voltage Reference w/ Sink/Source Capability, 5.0 VOUT
    ADR5045 5 0.1 n/a - n/a n/a, Shunt REF -40 to +125 n/a Shunt SC70, SOT23 $0.30 Precision, Micropower, Shunt Mode Voltage Reference (5.0 Vout)
    AD1585 5 0.1 50 140 5 +5.2 to +12 -40 to +125 70µA Series-Low Dropout SOT23 $0.61 5V, Micropower, Precision, Series-Mode, Low Dropout Voltage Reference
    ADR395 5 0.1 9 8 5 +5.3 to +15 -40 to +125 120µA Series-Low Dropout TSOT $0.78 5.0 V Micropower, Low Noise Precision Voltage Reference with Shutdown
    ADR125 5 0.12 3 20 5 +5.3 to +18 -40 to +125 125µA Series-Low Dropout TSOT $0.92 5V, Precision Micropower LDO Voltage Reference
    REF02 5 0.15 3 10 10 +7.0 to +40 -40 to +85, -55 to +125, 0 to +70 1.4mA Series DIP, SOIC, TO-99 $1.21 +5V Precision Voltage Reference/Temperature Transducer
    REF195 5 0.2 2 50 30 +5.1 to +15 -40 to +85 45µA Series-Low Dropout DIP, SOIC, TSSOP $1.25 Precision Micropower, Low Dropout, Low Voltage References, Nom. Vo = 5 V
    ADR550 5 0.2 40 38 n/a n/a, shunt reference -40 to +85 50µA Shunt SC70, SOT23 $0.48 5.0 V High Performance, Low Noise Shunt Reference
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