Top

Product details

Parameters

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 Rating Catalog VO adj (Min) (V) 2.048 VO adj (Max) (V) 10 Iz for regulation (Min) (uA) 60, 60, 62, 68, 74, 91, 100 Temp coeff (Max) (ppm/ degree C) 100, 150 Operating temperature range (C) -40 to 85 Iout/Iz (Max) (mA) 15 open-in-new Find other Shunt voltage references

Package | Pins | Size

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 open-in-new Find other Shunt voltage references

Features

  • 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)
open-in-new Find other Shunt voltage references

Description

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).

open-in-new Find other Shunt voltage references
Download
Similar products you might be interested in
open-in-new Compare products
Same functionality and pinout but is not an equivalent to the compared device:
LM4050-N ACTIVE 50-ppm/°C precision micropower shunt voltage reference Better temperature coefficient
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
LM4030 ACTIVE Ultra-high-precision shunt voltage reference Better accuracy & temperature coefficient

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 11
Type Title Date
* Datasheet LM4040-N/-Q1 Precision Micropower Shunt Voltage Reference datasheet (Rev. K) Jun. 02, 2016
Application notes Voltage Reference Design Tips For ADC Pairing Nov. 05, 2019
White papers Voltage Supervisor and Reset ICs: Tips, Tricks and Basics Jun. 28, 2019
Technical articles How to use a voltage reference as a voltage regulator Dec. 03, 2018
Application notes Using Voltage Supervisors in High Voltage Applications Oct. 09, 2018
White papers Tips and tricks for designing with voltage references May 30, 2017
Technical articles Can I get that shunt reference to go, please? Feb. 29, 2016
Application notes AN-1525 Single Supply Operation of the DAC0800 and DAC0802 (Rev. A) Apr. 22, 2013
Application notes TO-92 Packing Options / Ordering Instructions (Rev. A) Jun. 23, 2010
Application notes Implementing Single-Chip FPGA Power Solutions Mar. 21, 2007
Application notes Negative Buck Switching Regulator (using LM258x) Mar. 21, 2007

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
1099
Description

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 (...)

Features
  • TMS320DM368 Digital Media processor-based development board
  • Parallel Camera Input compatible with Leopard Imaging LI-5M02 camera board
  • Video capture of NTSC or PAL signals via component for HD and composite/S-Video for SD
  • NTSC or PAL output via component for HD and composite/S-Video for SD
  • Other (...)

Design tools & simulation

SIMULATION MODELS Download
SNOM393.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM394.ZIP (36 KB) - PSpice Model
SIMULATION MODELS Download
SNOM395.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM396.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM397.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM398.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM399.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM400.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM401.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM402.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM403.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM404.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM405.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM406.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM407.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM408.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM409.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM410.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM411.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM412.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM413.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM414.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM415.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM416.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM417.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM418.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM419A.ZIP (102 KB) - PSpice Model
SIMULATION MODELS Download
SNOM420.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM421.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM422.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM423.ZIP (25 KB) - PSpice Model
SIMULATION MODELS Download
SNOM444.TSC (72 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNOM445.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNOM446.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNOM447.TSC (73 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNOM448.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNOM449.TSC (71 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNOM450.TSC (72 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNOM451.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNOM452.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNOM453.TSC (72 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNOM454.TSC (72 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNOM455.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNOM456.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNOM457.TSC (72 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNOM492.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM493.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM494.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM495.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM496.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM497.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM498.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM499A.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM500.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM501.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM502.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM503.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM504.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM505.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM506.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM507.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM508.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM525.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM526.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM539.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM540.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM541.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM542.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM543.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM544.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM545.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM546.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM547.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM548.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM550.ZIP (1 KB) - PSpice Model
SIMULATION MODELS Download
SNOM551.ZIP (1 KB) - PSpice Model
SIMULATION TOOLS Download
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 (...)
Features
  • 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
  • (...)
CALCULATION TOOLS Download
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 (...)
Features
  • 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 (...)
CALCULATION TOOLS Download
SNVC184.ZIP (53 KB)

Reference designs

REFERENCE DESIGNS Download
48-V / 25-A negative-to-positive synchronous buck-boost reference design for power amplifiers
PMP21943 — This reference design is a negative-to-positive synchronous buck-boost converter for power amplifier applications. The circuit is powered from the nominal -48-V system source to provide an output voltage of +48 V at 25 A. The design uses two dual synchronous boost controllers for 4-phase operation (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
12-V / 100-A negative-to-positive synchronous buck-boost reference design for power amplifiers
PMP21867 — This reference design is a negative-to-positive synchronous buck-boost converter for power amplifier applications. The circuit is powered from the nominal -48-V system source to provide an output voltage of +12 V at 100 A. The design uses two dual synchronous boost controllers for 4-phase operation (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
1000-W, Bidirectional, 12-V to 12-V Converter Reference Design
PMP15035 — This reference design is a dual-channel, bidirectional converter suitable for 12-V to 12-V, dual-battery system, automotive applications. This reference design has a wide input range (3 V to 40 V) and could give full load (1kW) in the input voltage from 9V to 18V by using two LM5170-Q1 controllers (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
High Accuracy ±0.5% Current and Isolated Voltage Measurement Ref Design Using 24-Bit Delta-Sigma ADC
TIDA-00835 The TIDA-00835 reference design allows for accurate voltage and current measurement using a bipolar input configuration by incorporating a four- channel, 24-bit simultaneously-sampling differential input Delta-Sigma ADC over wide dynamic range. The ADC is configured to measure ±2.5 V bipolar (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Active Integrator for Rogowski Coil Reference Design with Improved Accuracy for Relay and Breaker
TIDA-00777 — The TIDA-00777 TI Design shows an active integrator design that covers wide input current range for Rogowski Coil with excellent accuracy, linearity, stability and repeatability. The integrator uses a precision amplifier with very low offset and temperature drift. Two configurations of the (...)
document-generic Schematic
REFERENCE DESIGNS Download
Shunt-Based High Current Measurement (200-A) Reference Design with Reinforced Isolation Amplifier
TIDA-00912 — The TIDA-00912 TI Design provides a complete reference solution for isolated current measurement using external shunts, reinforced isolation amplifiers, and isolated power supply. The shunt voltage is limited to 25 mV max. This reduces power dissipation in the shunt to enable a high current (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference Design to Measure AC Voltage & Current in Protection Relays w/Delta-Sigma Chip Diagnostics
TIDA-00810 The TIDA-00810 reference design accurately measures analog inputs performance and includes chip diagnostics to help identify power  systems failures early by using a highly accuracy AC voltage and current measurement analog front end (AFE) and a four-channel, 24-bit simultaneously-sampling (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Shunt-Based 200A Peak Current Measurement Reference Design Using Isolation Amplifier
TIDA-00445 The TIDA-00445 TI design provides a reference solution for isolated current measurement using shunt and isolated amplifier. By limiting the shunt voltage to 25mV, this design is able to reduce power dissipation in the shunt and achieves a high current measurement range of up to 200A. Shunt voltage (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
24V Input 700mA Output Buck Regulator LED Driver - Reference Design
PMP10596 The PMP10596 reference design is an LED driver based on SIMPLE SWITCHER® LM46002 buck regulator. The driver board takes 24V +/-25% input voltage and supplies700mA output current to drive up to 4 LEDs in series. The LM46002 is a 60V, 2A synchronous buck regulator with integrated FETs, and in this (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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

Ordering & quality