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Shunt voltage references

LM4041-N

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Fixed & adjustable, 45-µA, precision micropower shunt voltage reference

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Data sheet

LM4041-N

ACTIVE
Data sheet Order now

Product details

VO (V) 1.225 Initial accuracy (max) (%) 0.1, 0.2, 0.5, 1, 2 VO adj (min) (V) 1.24 VO adj (max) (V) 10 Iz for regulation (min) (µA) 60 Reference voltage (V) Fixed, adjustable Rating Catalog Temp coeff (max) (ppm/°C) 100, 150 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 12
VO (V) 1.225 Initial accuracy (max) (%) 0.1, 0.2, 0.5, 1, 2 VO adj (min) (V) 1.24 VO adj (max) (V) 10 Iz for regulation (min) (µA) 60 Reference voltage (V) Fixed, adjustable Rating Catalog Temp coeff (max) (ppm/°C) 100, 150 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 12
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37 SOT-SC70 (DCK) 5 4.2 mm² 2 x 2.1 TO-92 (LP) 3 19.136 mm² 5.2 x 3.68
  • Qualified for Automotive Applications
  • SEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to
      +125°C Ambient Temperature Range
    • Device Temperature Grade 3: –40°C to +85°C
      Ambient Temperature Range (For SOT-23
      Only)
  • Available in Standard, AEC Q-100 Grade 1
    (Extended Temperature Range), and Grade 3
    (Industrial Temperature Range) Qualified Versions
    (SOT-23 Only)
  • Small Packages: SOT-23, TO-92, and SC70
  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Reverse Breakdown Voltage Options of 1.225 V
    and Adjustable
  • Output Voltage Tolerance (A grade, 25°C) =
    ±0.1%(Maximum)
  • Low Output Noise (10 Hz to 10kHz) = 20 µVrms
  • Wide Operating Current Range of 60 µA to 12 mA
  • Industrial Temperature Range (LM4041A/B-N,
    LM4041-N-Q1A/Q1B) of –40°C to +85°C
  • Extended Temperature Range (LM4041C/D/E-N,
    LM4041-N-Q1C/Q1D/Q1E) of –40°C to +125°C
  • Low Temperature Coefficient of 100 ppm/°C

    (Maximum)
  • Qualified for Automotive Applications
  • SEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to
      +125°C Ambient Temperature Range
    • Device Temperature Grade 3: –40°C to +85°C
      Ambient Temperature Range (For SOT-23
      Only)
  • Available in Standard, AEC Q-100 Grade 1
    (Extended Temperature Range), and Grade 3
    (Industrial Temperature Range) Qualified Versions
    (SOT-23 Only)
  • Small Packages: SOT-23, TO-92, and SC70
  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Reverse Breakdown Voltage Options of 1.225 V
    and Adjustable
  • Output Voltage Tolerance (A grade, 25°C) =
    ±0.1%(Maximum)
  • Low Output Noise (10 Hz to 10kHz) = 20 µVrms
  • Wide Operating Current Range of 60 µA to 12 mA
  • Industrial Temperature Range (LM4041A/B-N,
    LM4041-N-Q1A/Q1B) of –40°C to +85°C
  • Extended Temperature Range (LM4041C/D/E-N,
    LM4041-N-Q1C/Q1D/Q1E) of –40°C to +125°C
  • Low Temperature Coefficient of 100 ppm/°C

    (Maximum)

Ideal for space-critical applications, the LM4041-N precision voltage reference is available in the sub-miniature SC70 and SOT-23 surface-mount packages. The advanced design of the LM4041-N eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4041-N easy to use. Further reducing design effort is the availability of a fixed (1.225 V) and adjustable reverse breakdown voltage. The minimum operating current is 60 µA for the LM4041-N 1.2 and the LM4041-N ADJ. Both versions have a maximum operating current of 12 mA.

The LM4041-N uses fuse and Zener-zap reverse breakdown or reference voltage trim during wafer sort to ensure that the prime parts have an accuracy of better than ±0.1% (A grade) 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.

Ideal for space-critical applications, the LM4041-N precision voltage reference is available in the sub-miniature SC70 and SOT-23 surface-mount packages. The advanced design of the LM4041-N eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4041-N easy to use. Further reducing design effort is the availability of a fixed (1.225 V) and adjustable reverse breakdown voltage. The minimum operating current is 60 µA for the LM4041-N 1.2 and the LM4041-N ADJ. Both versions have a maximum operating current of 12 mA.

The LM4041-N uses fuse and Zener-zap reverse breakdown or reference voltage trim during wafer sort to ensure that the prime parts have an accuracy of better than ±0.1% (A grade) 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.
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Technical documentation

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Type Title Date
* Data sheet LM4041/LM4041-N-Q1 Precision Micropower Shunt Voltage Reference datasheet (Rev. G) 08 Oct 2015
Application note Precision Current Sources and Sinks Using Voltage References 30 Jun 2020
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Technical article Power Tips: Where to connect frequency analyzer reference leads for Bode plot meas PDF | HTML 06 Oct 2016
Technical article Digitally select your reference voltage PDF | HTML 27 Apr 2016
Application note TO-92 Packing Options / Ordering Instructions (Rev. A) 23 Jun 2010
Application note Adaptive Speed Control for Automotive Systems 20 Nov 2007
White paper Precision Method for Laser Diode Emission Control 01 Aug 2004

Design & development

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Calculation tool

SHUNT-REFERENCE-CALC — Shunt Reference Selector and Design Calculator

This tool guides the user through the design process for the TLx431 and LM40x0 family of shunt voltage references. This calculator will recommend resistance and capacitance values to optimally meet the user's desired specifications.
Supported products & hardware

Supported products & hardware

Products
Shunt voltage references
ATL431 — 2.5-V low-IQ adjustable precision shunt regulator ATL431LI — Low-IQ programmable shunt regulator offered in an ultra-small DQN package ATL431LI-Q1 — Automotive, high-bandwidth, low-IQ programmable shunt regulator (pinout: KRA) ATL432 — 2.5-V precision programmable shunt regulator ATL432LI — High-bandwidth, low-IQ programmable shunt regulator (pinout: RKA) ATL432LI-Q1 — Automotive, high-bandwidth, low-IQ programmable shunt regulator (pinout: RKA) LM4030 — Ultra-high-precision shunt voltage reference LM4040 — Fixed voltage, 45-µA, precision micropower shunt voltage reference LM4040-N — 100-ppm/°C precision micropower shunt voltage reference LM4040-N-Q1 — Automotive, 100-ppm/°C precision micropower shunt voltage reference LM4040C25-EP — Enhanced Product 2.5-V Precision Micropower Shunt Voltage Reference, 0.5% accuracy LM4041-N — Fixed & adjustable, 45-µA, precision micropower shunt voltage reference LM4041-N-Q1 — Automotive, precision micropower shunt voltage reference LM4041A12 — 1.2-V precision micropower shunt voltage reference with 0.1% accuracy LM4041B — Adjustable, precision micropower shunt voltage reference with 0.2% accuracy LM4041B12 — 1.2-V precision micropower shunt voltage reference with 0.2% accuracy LM4041C — Adjustable, precision micropower shunt voltage reference with 0.5% accuracy LM4041C12 — 1.2-V precision micropower shunt voltage reference with 0.5% accuracy LM4041D — Adjustable, precision micropower shunt voltage reference with 1% accuracy LM4041D12 — 1.2-V precision micropower shunt voltage reference with 1% accuracy LM4050-N — 50-ppm/°C precision micropower shunt voltage reference LM4050-N-Q1 — Automotive, 50-ppm/°C precision micropower shunt voltage reference LM4050QML-SP — Radiation-hardened QMLV, 2.5-V or 5-V shunt voltage reference LM4051-N — Fixed & adjustable, precision micropower shunt voltage reference LMV431 — 1.5%, low-voltage (1.24-V) adjustable precision shunt regulator LMV431A — 1%, low-voltage (1.24-V) adjustable precision shunt regulator LMV431B — 0.5%, low-voltage (1.24-V) adjustable precision shunt regulator TL431 — Adjustable precision shunt regulator TL431-Q1 — Automotive adjustable precision shunt regulator (pin layout: KRA) TL431C — 2% adjustable precision shunt regulator TL431LI — Adjustable precision shunt regulator with optimized reference current (pin layout: KRA) TL431LI-Q1 — Automotive, adjustable, precision shunt regulator with optimized reference current TL432 — Adjustable precision shunt regulator (reverse pinout) TL432-Q1 — Automotive adjustable precision shunt regulator (pin layout: RKA) TL432LI — Adjustable precision shunt regulator with optimized reference current (pin layout: RKA) TL432LI-Q1 — Automotive, adjustable, precision shunt regulator with optimized reference current TLA431 — All-capacitor stable precision programmable reference with KRA pin layout TLA432 — All-capacitor stable precision programmable reference with RKA pin layout TLV431 — 1.5% accuracy, low-voltage, adjustable precision shunt regulator TLV431A — 1% accuracy, low-voltage, adjustable precision shunt regulator TLV431A-Q1 — Automotive, low-voltage adjustable precision shunt regulator TLV431B — 0.5% accuracy, low-voltage, adjustable precision shunt regulator TLV431B-Q1 — Automotive, low-voltage adjustable precision shunt regulator TLVH431 — 1.5% low-voltage wide-operating current adjustable precision shunt regulator TLVH431A — 1% low-voltage wide-operating current adjustable precision shunt regulator TLVH431A-Q1 — Automotive, low-voltage adjustable precision shunt regulator TLVH431B — 0.5% low-voltage wide-operating current adjustable precision shunt regulator TLVH431B-EP — Enhanced-plastic 0.5% low-voltage wide-operating-current adjustable precision shunt regulator TLVH431B-Q1 — Automotive, low-voltage adjustable precision shunt regulator (reverse pinout) TLVH432 — 1.5% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout) TLVH432A — 1% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout) TLVH432B — 0.5% low-voltage wide-operating current adjustable precision shunt regulator (reverse pinout)
General-purpose op amps
TLV4313 — Quad, 5.5-V, 1-MHz, low quiescent current (65-μA), RRIO operational amplifier TLV4314 — Quad, 5.5-V, 3-MHz, RRIO operational amplifier TLV4314-Q1 — Automotive-grade, quad, 5.5-V, 3-MHz, RRIO operational amplifier TLV4316 — Quad, 5.5-V, 10-MHz, RRIO operational amplifier TLV4316-Q1 — Automotive-grade, quad, 5.5-V, 10-MHz, RRIO operational amplifier TLV4379 — Quad, 5.5-V, 90-kHz, low quiescent current (4-μA), RRIO operational amplifier
Precision op amps (Vos<1mV)
TLV4333 — Quad, 350-kHz, low-noise, RRIO, CMOS operational amplifier for cost-sensitive systems TLV4376 — Quad 5.5-MHz, 100-µV offset, 8-nV/√Hz noise, 815-µA power, precision operational amplifiers TLV4387 — Quad, ultra-high-precision (10 μV) zero-drift (0.01 μV/°C) low-input-bias-current op amp
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Calculation tool

SHUNT_VOLTAGE_REFERENCE_RESISTOR_CALCULATOR — Shunt Voltage Reference External Resistor Quick Start 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 (...)

Supported products & hardware

Supported products & hardware

Products
Die & wafer services
LM336-2.5-MIL — Shunt Voltage Reference
Shunt voltage references
ATL431 — 2.5-V low-IQ adjustable precision shunt regulator LM136-2.5-N — Voltage Reference Diode LM136-5.0 — 5.0V Reference Diode LM136-5.0QML — 5.0V Reference Diode LM136A-2.5QML — 2.5V Reference Diode LM136A-2.5QML-SP — Radiation-hardened QMLV, 2.5-V shunt voltage reference LM136A-5.0QML — 5.0V Reference Diode LM185-1.2-N — Micropower Voltage Reference Diode LM185-1.2QML — Micropower Voltage Reference Diode LM185-1.2QML-SP — Radiation-hardened QMLV, 1.2-V shunt voltage reference LM185-2.5-N — Micropower Voltage Reference Diode LM185-2.5QML — Micropower Voltage Reference Diode LM185-2.5QML-SP — Space-grade QMLV 2.5-V  shunt voltage reference LM185-ADJ — Adjustable Micropower Voltage Reference LM185QML — Adjustable Micropower Voltage Reference LM285-1.2 — 1.235-V, –40°C to +85°C, micropower voltage reference LM285-1.2-N — 1.235-V, –40°C to +85°C, micropower voltage reference diode LM285-2.5 — 2.5-V, –40°C to +85°C, micropower voltage reference LM285-2.5-N — 2.5-V, –40°C to +85°C, micropower voltage reference diode LM285-ADJ — Adjustable, 85°C, micropower voltage reference LM336-2.5 — 0°C to 70°C, 2.5-V integrated reference circuit LM336-2.5-N — Voltage reference diode LM336-5.0 — 5-V reference diode LM385-1.2 — 1.235-V, 2%, 0°C to 70°C, micropower voltage reference LM385-1.2-MIL — Micropower Voltage Reference LM385-1.2-N — 1.235-V, 0°C to 70°C, micropower voltage reference diode LM385-2.5 — 2.5-V, 2%, 70°C, micropower voltage reference LM385-2.5-N — 2.5-V, 0°C to 70°C, micropower voltage reference diode LM385-ADJ — Adjustable, 70°C, micropower voltage reference LM4030 — Ultra-high-precision shunt voltage reference LM4040 — Fixed voltage, 45-µA, precision micropower shunt voltage reference LM4040-N — 100-ppm/°C precision micropower shunt voltage reference LM4040-N-Q1 — Automotive, 100-ppm/°C precision micropower shunt voltage reference LM4041-N — Fixed & adjustable, 45-µA, precision micropower shunt voltage reference LM4041-N-Q1 — Automotive, precision micropower shunt voltage reference LM4050-N — 50-ppm/°C precision micropower shunt voltage reference LM4050-N-Q1 — Automotive, 50-ppm/°C precision micropower shunt voltage reference LM4050QML-SP — Radiation-hardened QMLV, 2.5-V or 5-V shunt voltage reference LM4051-N — Fixed & adjustable, precision micropower shunt voltage reference LM431 — 2%, 1%, or 0.5% accuracy, adjustable precision Zener shunt regulator LM4431 — Micropower shunt voltage reference LMV431 — 1.5%, low-voltage (1.24-V) adjustable precision shunt regulator LMV431A — 1%, low-voltage (1.24-V) adjustable precision shunt regulator LMV431B — 0.5%, low-voltage (1.24-V) adjustable precision shunt regulator
Current references
LM134 — 3-Terminal Adjustable Current Source LM234 — 100°C 3-pin adjustable current source LM334 — 0°C to 70°C 3-pin adjustable current source
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Package Pins CAD symbols, footprints & 3D models
SOT-23 (DBZ) 3 Ultra Librarian
SOT-SC70 (DCK) 5 Ultra Librarian
TO-92 (LP) 3 Ultra Librarian
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