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REF191:  PRECISION MICROPOWER, LOW DROPOUT, LOW VOLTAGE REFERENCES

The REF19x series precision band gap voltage references use a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve a very low temperature coefficient and high initial accuracy.

The REF19x series is made up of micropower, low dropout voltage (LDV) devices, providing stable output voltage from supplies as low as 100 mV ...More

REF191:  PRECISION MICROPOWER, LOW DROPOUT, LOW VOLTAGE REFERENCES

Product Description

The REF19x series precision band gap voltage references use a patented temperature drift curvature correction circuit and laser trimming of highly stable, thin-film resistors to achieve a very low temperature coefficient and high initial accuracy.

The REF19x series is made up of micropower, low dropout voltage (LDV) devices, providing stable output voltage from supplies as low as 100 mV above the output voltage and consuming less than 45 μA of supply current. In sleep mode, which is enabled by applying a low TTL or CMOS level to the SLEEP pin, the output is turned off and supply current is further reduced to less than 15 μA.

The REF19x series references are specified over the extended industrial temperature range (−40°C to +85°C) with typical performance specifications over −40°C to +125°C for applications, such as automotive.

All electrical grades are available in an 8-lead SOIC package; the PDIP and TSSOP packages are available only in the lowest electrical grade.

Applications

  • Portable instruments
  • ADCs and DACs
  • Smart sensors
  • Solar powered applications
  • Loop-current-powered instruments

    • Data Sheet, Rev. J, 3/08

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    • Initial Accuracy: ±2 mV Max
    • Temperature Coefficient: 5 ppm/°C Max
    • Low Supply Current: 45 µA Max
    • Sleep Mode: 15 µA Max
    • Low Dropout Voltage
    • Load Regulation: 4 ppm/mA
    • Line Regulation: 4 ppm/V
    • High Output Current: 30 mA
    • Short-Circuit Protection
    • Vout: 2.048
    • Initial Accuracy (%): 0.1
    • Ref Out TC (ppm/C): 2ppm/C
    • Supply Voltage Range (V): +2.3 to +15
    • Supply Current : 45µA
    • Ref Output Current (mA): 30mA
    • 0.1-10 Hz Noise (µV p-p): 20µV p-p
    • Temp Range(s): -40 to +85
    • Package: DIP,SOIC
    • Reference Type: Series-Low Dropout

    SOIC/TSSOP Pin Configuration for REF191

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    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
    • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
    • Automotive: -40 to +125 degrees Celsius
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    *The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.