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LM4041
Improved Precision Micropower Shunt Voltage Reference


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 312kB)
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The LM4041 is a precision two-terminal shunt mode, bandgap voltage reference with a fixed reverse breakdown voltage of 1.225V. Ideal for space-critical applications, the LM4041 is offered in the subminiature 3-pin SC70 surface-mount package (1.8mm x 1.8mm), 50% smaller than comparable devices in SOT23 surfacemount packages (SOT23 versions are also available).

Laser-trimmed resistors ensure precise initial accuracy. With a 100ppm/°C temperature coefficient, the device is offered in four grades of initial accuracy ranging from 0.1% to 1%. The LM4041 has a 60µA to 12mA shunt current capability with low dynamic impedance, ensuring stable reverse-breakdown voltage accuracy over a wide range of operating temperatures and currents.

The LM4041 does not require an external stabilizing capacitor while ensuring stability with any capacitive load.

The LM4041 is guaranteed over the temperature range -40°C to +125°C.

Key Features   Applications/Uses
  • Ultra-Small 3-Pin SC70 Package
  • 0.1% (max) Initial Accuracy
  • 100ppm/°C (max) Temperature Coefficient Guaranteed over -40°C to +125°C Temperature Range
  • Wide Operating Current Range: 60µA to 12mA
  • Low 20µVRMS Output Noise (10Hz to 10kHz)
  • 1.225V Fixed Reverse Breakdown Voltage
  • No Output Capacitors Required
  • Tolerates Capacitive Loads

 
  • Cell Phones
  • Industrial Process Controls
  • Notebook Computers
  • Portable Battery-Powered Equipment

    Key Specifications:  Voltage References
    Part Number VOUT
    (V)
    Temp. Coeff.
    (ppm/°C)
    Initial Accuracy
    (% max)
    IREV
    (µA)
    IREV
    (mA)
    Features Package/Pins Smallest Available Pckg.
    (mm2)
    Oper. Temp.
    (°C)
    Price
    max @ +25°C min max max w/pins See Notes
    LM4041A  1.25 100 0.1 65 15 Shunt
    SC70/3
    SOT/3
    5
    -40 to +85
    -40 to +125
    $0.81 @1k
    LM4041B  100 0.2 65
    SC70/3
    SOT/3
    $0.62 @1k
    LM4041C  100 0.5 65
    SC70/3
    SOT/3
    $0.36 @1k
    LM4041D  150 1 70
    SC70/3
    SOT/3
    $0.31 @1k
    See All Voltage References (162)

    Diagram
    Typical Operating Circuit

    Pin Configuration

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    Document Ref.: 19-1704; Rev 4; 2005-09-12
    This page last modified: 2007-06-05


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