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LM4050-N

ACTIVE

50-ppm/°C precision micropower shunt voltage reference

Product details

VO (V) 2.048, 2.5, 4.096, 4.1, 5, 8.192, 10 Initial accuracy (max) (%) 0.1, 0.2, 0.5 VO adj (min) (V) 2.048 VO adj (max) (V) 10 Iz for regulation (min) (µA) 45 Reference voltage (V) Fixed Rating Catalog Temp coeff (max) (ppm/°C) 50 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
VO (V) 2.048, 2.5, 4.096, 4.1, 5, 8.192, 10 Initial accuracy (max) (%) 0.1, 0.2, 0.5 VO adj (min) (V) 2.048 VO adj (max) (V) 10 Iz for regulation (min) (µA) 45 Reference voltage (V) Fixed Rating Catalog Temp coeff (max) (ppm/°C) 50 Operating temperature range (°C) -40 to 125 Iout/Iz (max) (mA) 15
SOT-23 (DBZ) 3 6.9204 mm² 2.92 x 2.37
  • Small Package: SOT-23
  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Fixed Reverse Breakdown Voltages of 2.048 V,
    2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V
  • Key Specifications (LM4050-N)
    • Output Voltage Tolerance (A Grade, 25°C)
      ±0.1% (Maximum)
    • Low Output Noise (10 Hz to 10 kHz) 41 µVrms
      (Typical)
    • Wide Operating Current Range 60 µA to 15
      mA
    • Industrial Temperature Range –40°C to 85°C
    • Extended Temperature Range –40°C to 125°C
    • Low Temperature Coefficient 50 ppm/°C (max)
    • LM4050-N-Q1 is AEC-Q100 Grade 1 Qualified
      and are Manufactured on an Automotive
      Grade Flow
  • Small Package: SOT-23
  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Fixed Reverse Breakdown Voltages of 2.048 V,
    2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V
  • Key Specifications (LM4050-N)
    • Output Voltage Tolerance (A Grade, 25°C)
      ±0.1% (Maximum)
    • Low Output Noise (10 Hz to 10 kHz) 41 µVrms
      (Typical)
    • Wide Operating Current Range 60 µA to 15
      mA
    • Industrial Temperature Range –40°C to 85°C
    • Extended Temperature Range –40°C to 125°C
    • Low Temperature Coefficient 50 ppm/°C (max)
    • LM4050-N-Q1 is AEC-Q100 Grade 1 Qualified
      and are Manufactured on an Automotive
      Grade Flow

Ideal for space-critical applications, the LM4050-N precision voltage reference is available in the sub-miniature (3 mm × 1.3 mm) SOT-23 surface-mount package. The LM4050-N design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4050-N easy to use. Further reducing design effort is the availability of several fixed reverse breakdown voltages: 2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V. The minimum operating current increases from 60 µA for the LM4050-N-2.0 to 100 µA for the LM4050-N-10.0. All versions have a maximum operating current of 15 mA.

The LM4050-N 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% (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.

All grades and voltage options of the LM4050-N are available in both an industrial temperature range (–40°C and 85°C) and an extended temperature range (–40°C and 125°C).

Ideal for space-critical applications, the LM4050-N precision voltage reference is available in the sub-miniature (3 mm × 1.3 mm) SOT-23 surface-mount package. The LM4050-N design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4050-N easy to use. Further reducing design effort is the availability of several fixed reverse breakdown voltages: 2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V. The minimum operating current increases from 60 µA for the LM4050-N-2.0 to 100 µA for the LM4050-N-10.0. All versions have a maximum operating current of 15 mA.

The LM4050-N 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% (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.

All grades and voltage options of the LM4050-N are available in both an industrial temperature range (–40°C and 85°C) and an extended temperature range (–40°C and 125°C).

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LM4030 ACTIVE Ultra-high-precision shunt voltage reference Enhanced accuracy (0.05%) with lower temperature drift (10 ppm/°C)

Technical documentation

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Type Title Date
* Data sheet LM4050-N/-Q1 Precision Micropower Shunt Voltage Reference datasheet (Rev. G) PDF | HTML 30 Sep 2015
Application note Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 09 Jan 2024
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019

Design & development

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Calculation tool

SHUNT-REFERENCE-CALC Shunt Reference Selector and Design Calculator

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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 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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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
Simulation tool

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