Product details

VO (V) 2.048, 2.5, 3, 4.096, 5, 8.192, 10 Reference voltage Fixed Initial accuracy (Max) (%) 0.1, 0.2, 0.5, 1, 2 VO adj (Min) (V) 2.048 VO adj (Max) (V) 10 Iz for regulation (Min) (uA) 60, 60, 62, 68, 74, 91, 100 Rating Catalog Temp coeff (Max) (ppm/ degree C) 100, 150 Operating temperature range (C) -40 to 85 Iout/Iz (Max) (mA) 15
VO (V) 2.048, 2.5, 3, 4.096, 5, 8.192, 10 Reference voltage Fixed Initial accuracy (Max) (%) 0.1, 0.2, 0.5, 1, 2 VO adj (Min) (V) 2.048 VO adj (Max) (V) 10 Iz for regulation (Min) (uA) 60, 60, 62, 68, 74, 91, 100 Rating Catalog Temp coeff (Max) (ppm/ degree C) 100, 150 Operating temperature range (C) -40 to 85 Iout/Iz (Max) (mA) 15
SOT-23 (DBZ) 3 7 mm² 2.92 x 2.37 SOT-SC70 (DCK) 5 4 mm² 2 x 2.1 TO-92 (LP) 3 19 mm² 5.2 x 3.68
  • SOT-23 AEC Q-100 Grades 1 and 3 available
  • Small Packages: SOT-23, TO-92, and SC70
  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Fixed Reverse Breakdown Voltages of 2.048 V,
    2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V
  • Key Specifications (2.5-V LM4040-N)
    • Output Voltage Tolerance (A Grade,
      25°C): ±0.1% (Maximum)
    • Low Output Noise (10 Hz to 10 kHz):
      35 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: 100 ppm/°C
      (Maximum)
  • SOT-23 AEC Q-100 Grades 1 and 3 available
  • Small Packages: SOT-23, TO-92, and SC70
  • No Output Capacitor Required
  • Tolerates Capacitive Loads
  • Fixed Reverse Breakdown Voltages of 2.048 V,
    2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V
  • Key Specifications (2.5-V LM4040-N)
    • Output Voltage Tolerance (A Grade,
      25°C): ±0.1% (Maximum)
    • Low Output Noise (10 Hz to 10 kHz):
      35 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: 100 ppm/°C
      (Maximum)

Ideal for space-critical applications, the LM4040-N precision voltage reference is available in the sub-miniature SC70 and SOT-23 surface-mount package. The advanced design of the LM4040-N eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4040-N easy to use. Further reducing design effort is the availability of several fixed reverse breakdown voltages: 2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V. The minimum operating current increases from 60 µA for the 2.5-V LM4040-N to 100 µA for the 10-V LM4040-N. All versions have a maximum operating current of 15 mA.

The LM4040-N uses a 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.

Also available is the LM4041-N with two reverse breakdown voltage versions: adjustable and 1.2 V. See the LM4041-N data sheet (SNOS641).

Ideal for space-critical applications, the LM4040-N precision voltage reference is available in the sub-miniature SC70 and SOT-23 surface-mount package. The advanced design of the LM4040-N eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load, thus making the LM4040-N easy to use. Further reducing design effort is the availability of several fixed reverse breakdown voltages: 2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V. The minimum operating current increases from 60 µA for the 2.5-V LM4040-N to 100 µA for the 10-V LM4040-N. All versions have a maximum operating current of 15 mA.

The LM4040-N uses a 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.

Also available is the LM4041-N with two reverse breakdown voltage versions: adjustable and 1.2 V. See the LM4041-N data sheet (SNOS641).

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Technical documentation

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View all 11
Type Title Date
* Data sheet LM4040-N/-Q1 Precision Micropower Shunt Voltage Reference datasheet (Rev. K) 02 Jun 2016
Application note Voltage Reference Design Tips For ADC Pairing (Rev. A) 02 Jun 2021
E-book Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
E-book Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 28 Jun 2019
Technical article How to use a voltage reference as a voltage regulator 04 Dec 2018
Application note Using Voltage Supervisors in High Voltage Applications 09 Oct 2018
Technical article Can I get that shunt reference to go, please? 29 Feb 2016
Application note AN-1525 Single Supply Operation of the DAC0800 and DAC0802 (Rev. A) 22 Apr 2013
Application note TO-92 Packing Options / Ordering Instructions (Rev. A) 23 Jun 2010
Application note Implementing Single-Chip FPGA Power Solutions 21 Mar 2007
Application note Negative Buck Switching Regulator (using LM258x) 21 Mar 2007

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

TMDXEVM368 — TMS320DM36x Evaluation Module

The TMS320DM36x Digital Video Evaluation Module (DVEVM) enables developers to start immediate evaluation of TI’s Digital Media (DMx) processors and begin building digital video applications such as IP security cameras, action cameras, drones, wearables, digital signage, video doorbells, and (...)

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Package Pins Download
SC70 (DCK) 5 View options
SOT-23 (DBZ) 3 View options
TO-92 (LP) 3 View options

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