Precision Micropower Shunt Voltage Reference



Product details


VO (V) 2.5, 5 Reference voltage Fixed Initial accuracy (Max) (%) 0.1 Rating Space VO adj (Min) (V) 2.5 VO adj (Max) (V) 5 Iz for regulation (Min) (uA) 65, 74 Temp coeff (Max) (ppm/ degree C) 144, 166 Operating temperature range (C) -55 to 125, 25 to 25 Iout/Iz (Max) (mA) 15 open-in-new Find other Shunt voltage references

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  • Low Dose Rate Qualified 100 krad(Si)
  • SEFI Immune
  • SET Immune with 60µF CLOAD
  • CLOAD 0µF to 100µF
  • Fixed Reverse Breakdown Voltage of 2.500V, 5.000V

Key Specifiactions

  • LM4050-2.5QML
    • Output Voltage Tolerance IR = 100µA ±0.1% @ 25°C
    • Low Temperature Coefficient 15 ppm/°C
    • Low Output Noise 50 µVrms(typ)
    • Wide Operating Current Range 60 µA to 15 mA
  • LM4050-5.0QML
    • Output Voltage Tolerance IR = 100μA ±0.1% @ 25°C
    • Low Temperature Coefficient 23 ppm/°C
    • Low Output Noise 100 µVrms(typ)
    • Wide Operating Current Range 74 µA to 15 mA

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The LM4050QML precision voltage reference is available in a 10-Lead Ceramic CLGA package. The LM4050QML’s design eliminates the need for an external stabilizing capacitor while ensuring stability with a capacitive load, thus making the LM4050QML easy to use. The LM4050-2.5QML has a 60 µA minimum and 15 mA maximum operating current. The LM4050-5.0QML has a 74 µA minimum and 15 mA maximum operating current.

The LM4050QML utilizes fuse and zener-zap reverse breakdown voltage trim during wafer sort to ensure that the prime parts have an accuracy of better than ±0.1% at 25°C. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents.

The LM4050QML operates over the temperature range of –55°C to +125°C.

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Technical documentation

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Type Title Date
* Datasheet LM4050QML Precision Micropower Shunt Voltage Reference datasheet (Rev. G) Jul. 12, 2013
* SMD LM4050QML-SP SMD 5962R0923561VZA Jun. 21, 2016
* Radiation & Reliability reports LM4050WG2.5RLQV ELDRS Characterization Report May 14, 2012
* Radiation & Reliability reports LM4050WG2.5RLQV SET Report May 11, 2012
* Radiation & Reliability reports LM4050WG5.0RLQV ELDRS Report May 11, 2012
Application notes DLA Standard Microcircuit Drawings (SMD) and JAN Part Numbers Primer Aug. 21, 2020
Application notes Hermetic Package Reflow Profiles, Termination Finishes, and Lead Trim and Form May 18, 2020
More literature TI Engineering Evaluation Units vs. MIL-PRF-38535 QML Class V Processing Jun. 17, 2019
White papers Preview: Radiation Handbook for Electronics (Rev. A) Jun. 07, 2019
White papers Radiation Handbook for Electronics (Rev. A) May 21, 2019
Selection guides TI Space Products (Rev. G) May 15, 2019

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Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
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Shunt voltage reference external resistor quick-start calculator
SHUNT_VOLTAGE_REFERENCE_RESISTOR_CALCULATOR This external resistor quick-start calculator tool lets you easily calculate valid external resistor values relative to voltage reference, supply and load-current bounds. With these inputs, you can instantly view the resulting calculations and use the color-coded indications to understand (...)
  • Case-specific tool to calculate external resistor value associated with shunt voltage reference
  • Input fields for: voltage reference, supply voltage, load current and Iq bound values
  • Real-time effects of input values on schematic
  • Quick indicators notifying user of valid and invalid outputs
  • Error messages (...)

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