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LM4040

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

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

LM4040

ACTIVE
Data sheet Order now

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 Rating Catalog VO adj (Min) (V) 2.048 VO adj (Max) (V) 10 Iz for regulation (Min) (uA) 45, 47, 50, 65, 67, 75 Temp coeff (Max) (ppm/ degree C) 150 Operating temperature range (C) -40 to 125, -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

  • Fixed Output Voltages of 2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V
  • Tight Output Tolerances and Low Temperature Coefficient
    • Max 0.1%, 100 ppm/°C – A Grade
    • Max 0.2%, 100 ppm/°C – B Grade
    • Max 0.5%, 100 ppm/°C – C Grade
    • Max 1.0%, 150 ppm/°C – D Grade
  • Low Output Noise: 35 µVRMS Typ
  • Wide Operating Current Range: 45 µA Typ to 15 mA
  • Stable With All Capacitive Loads; No Output Capacitor Required
  • Available in Extended Temperature Range: –40°C to 125°C

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open-in-new Find other Shunt voltage references

Description

The LM4040 series of shunt voltage references are versatile, easy-to-use references that cater to a vast array of applications. The 2-pin fixed-output device requires no external capacitors for operation and is stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and low temperature coefficient to ensure a stable output voltage over a wide range of operating currents and temperatures. The LM4040 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage tolerances, ranging from 0.1% (max) for the A grade to 1% (max) for the D grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio for their applications.

Packaged in space-saving SC-70 and SOT-23-3 packages and requiring a minimum current of 45 µA (typ), the LM4040 also is ideal for portable applications. The LM4040xI is characterized for operation over an ambient temperature range of –40°C to 85°C. The LM4040xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.

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Technical documentation

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Type Title Date
* Datasheet LM4040 Precision Micropower Shunt Voltage Reference datasheet (Rev. N) Oct. 09, 2017
More literature 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
White papers Voltage reference selection basics white paper (Rev. A) Oct. 23, 2018
Application notes Using Voltage Supervisors in High Voltage Applications Oct. 09, 2018
More literature 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
Technical articles Understanding Voltage References: Ultra-low dropout - not just for the series reference Apr. 30, 2015
Technical articles Understanding Voltage References: Shunt vs series. Which topology is right for you? Apr. 29, 2015
Selection guides Voltage Reference Overview Jul. 26, 2013

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
$299.00
Description

Step 1: Buy this EVM (AWR1243BOOST)
Step 2: Download the mmWave DFP
Step 3: Take the mmWave sensor device trainings
Step 4: Review the white paper

The AWR1243 BoosterPack™ plug-in module is an easy-to-use evaluation board for the single-chip AWR1243 mmWave sensing device, with (...)

Features
  • Onboard antenna enables field testing
  • XDS110-based JTAG with serial port interface for flash programming
  • UART-to-USB interface for control, configuration, and data visualization
  • TI LaunchPad development-kit interface to seamlessly connect to TI MCUs
  • CAN connector enables direct interface to car units
View details
EVALUATION BOARDS Download
document-generic User guide
$299.00
Description

Step 1: Buy this EVM (AWR1443BOOST)
Step 2: Download the mmWave SDK
Step 3: Take the mmWave sensor device trainings
Step 4: Review the white paper on diverse proximity sensing applications

The AWR1443 BoosterPack™ plug-in module is an easy-to-use evaluation board for the single-chip (...)

Features
  • Onboard antenna enables field testing
  • XDS110-based JTAG with serial-port interface for flash programming
  • UART-to-USB interface for control, configuration, and data visualization
  • TI LaunchPad development-kit interface to seamlessly connect to TI MCUs
  • CAN connector enables direct interface to car units
View details
EVALUATION BOARDS Download
document-generic User guide
$299.00
Description

Step 1: Buy this EVM (AWR1642BOOST)
Step 2: Download mmWave SDK
Step 3: Take the mmWave sensor device trainings
Step 4: Evaluate performance for short-range radar, vital-sign monitoring and vehicle-occupant detection applications

AWR1642BOOST is an easy-to-use evaluation board for the (...)

Features
  • Onboard antenna enables field testing
  • XDS110-based JTAG with serial-port interface for flash programming
  • UART-to-USB interface for control, configuration, and data visualization
  • TI LaunchPad™ development-kit interface to seamlessly connect to TI MCUs
  • CAN connector enables direct interface to car units
View details
EVALUATION BOARDS Download
document-generic User guide
$299.00
Description

Step 1: Buy this EVM (AWR1642BOOST-ODS)
Step 2: Download the mmWave SDK
Step 3: Take the mmWave sensor device trainings
Step 4: Evaluate performance for obstacle-detection applications

AWR1642BOOST-ODS is an easy-to-use evaluation board for the AWR1642 single-chip mmWave sensor with integrated (...)

Features
  • Single-chip solution with DSP integration and 1.5 MB of on-chip RAM
  • Range: up to 15 m
  • Resolution: 4 cm
  • FOV
    • Azimuth: ±70 degrees
    • Elevation: ±40 degrees
View details
EVALUATION BOARDS Download
document-generic User guide
$299.00
Description

Step 1: Buy this EVM (AWR1843BOOST)
Step 2: Download mmWave SDK
Step 3: Take the mmWave sensor device trainings
Step 4: Evaluate performance for short-range or medium-range radar and automated parking applications

The AWR1843 BoosterPack™ plug-in module is an easy-to-use evaluation (...)

Features
  • Onboard antenna enables field testing
  • XDS110-based JTAG with serial-port interface for flash programming
  • UART-to-USB interface for control, configuration, and data visualization
  • TI LaunchPad development-kit interface to seamlessly connect to TI MCUs
  • CAN connector enables direct interfact to car units
View details
EVALUATION BOARDS Download
document-generic User guide
$349.00
Description

The AWR2243 BoosterPack™ plug-in module is an easy-to-use evaluation board for the single-chip AWR2243 mmWave sensing device.

AWR2243BOOST contains everything required to start developing using the MMWAVE-STUDIO environment and the DCA1000 real-time data capture adapter.

The standard 20-pin BoosterPack (...)

Features
  • Onboard antenna enables field testing
  • Standard interface for DCA1000 connectivity and MMWAVE-STUDIO for raw data capture
  • TI LaunchPad development-kit interface to seamlessly connect to TI MCUs
View details
EVALUATION BOARDS Download
$2,324.44
Description

The J6Entry/RSP EVM is an evaluation platform designed to speed up development efforts and reduce time to market for applications such as Infotainment, reconfigurable Digital Cluster or Integrated Digital Cockpit.

The main CPU board integrates these key peripherals such as Ethernet or HDMI, while the (...)

Features
  • 10.1" Display with capacitive Touch
  • JAMR3 Radio Tuner Application Board
  • 2GB DDR3L
  • LP8733/LP8732 Power Solution
  • On-board eMMC, NAND, NOR
  • USB3, USB2, PCIe, Ethernet, COM8Q, CAN, MLB, MicroSD and HDMI connectors
View details
EVALUATION BOARDS Download
document-generic User guide
Description

The IWR1443 BoosterPack™ plug-in module is an easy-to-use evaluation board for the single-chip IWR1443 mmWave sensing device, with direct connectivity to the TI MCU LaunchPad™ development-kit ecosystem.

IWR1443BOOST contains everything required to start developing on a low-power Arm® (...)

Features
  • Onboard antenna enables field testing
  • XDS110-based JTAG with serial-port interface for flash programming
  • UART-to-USB interface for control, configuration, and data visualization
  • TI LaunchPad development-kit interface to seamlessly connect to TI MCUs
  • CAN connector enables direct interface to car units
View details
EVALUATION BOARDS Download
document-generic User guide
Description
IWR1642BOOST is an easy-to-use evaluation board for the IWR1642 mmWave sensor, with direct connectivity to the microcontroller (MCU) LaunchPad™ Development Kit. The BoosterPack™ contains everything required to start developing software for on-chip C67x DSP core and low-power ARM® R4F (...)
Features
  • Onboard antenna to enable field testing
  • XDS110-based JTAG with serial port interface for flash programming
  • UART-to-USB interface for control, configuration, and data visualization
  • TI LaunchPad interface to seamlessly connect to TI MCUs
  • CAN connector enables direct interface to car units
View details
EVALUATION BOARDS Download
document-generic User guide
$299.00
Description

The IWR1843 BoosterPack™ plug-in module is an easy-to-use evaluation board for the single-chip IWR1843 mmWave sensing device, with direct connectivity to the TI MCU LaunchPad™ development-kit ecosystem.

IWR1843BOOST contains everything required to start developing on a low-power Arm® (...)

Features
  • Onboard antenna enables field testing
  • XDS110-based JTAG with serial-port interface for flash programming
  • UART-to-USB interface for control, configuration, and data visualization
  • TI LaunchPad development-kit interface to seamlessly connect to TI MCUs
  • CAN connector enables direct interfact to car units
View details
EVALUATION BOARDS Download
document-generic User guide
$30.00
Description

To get started developing:
Step 1: Buy the C2000 MCU F280049C Launchpad
Step 2: See the “Get Started” section below
LAUNCHXL-F280049C is a low cost evaluation and development tool for the F28004x series (including InstaSPIN-FOC capability) in the TI MCU LaunchPad ecosystem which is compatible with (...)

Features

Hardware Features

  • TMS320F280049C: 100 MHz C28x CPU with FPU and TMU, 256 KB Flash, InstaSPIN-FOC enabled, 3x 12-bit ADC, CAN, encoder, FSI, UART, and more
  • On-board XDS110 debug probe for real-time debug and flash programming
  • 80 pin LaunchPad leveraging the BoosterPack ecosystem
  • Power domain isolation (...)
View details
EVALUATION BOARDS Download
document-generic User guide
$199.00
Description

MMWAVEICBOOST carrier card platform enables rapid evaluation of an mmWave sensor by providing modular interface to various sensor and antenna kits. This carrier card enables debug, emulation, and direct interface to mmWave tools through USB connectivity. Raw analog-to-digital (...)

Features
  • Modular connectivity to mmWave antenna plug-in module
  • BoosterPack™ plug-in module interface
  • Debug and emulation through onboard XDS110
  • DCA1000EVM interface for raw ADC data capture
  • Compatible with mmWave studio (MMWAVE-STUDIO) tools, including mmWave demo visualizer (MMWAVE-DEMO-VISUALIZER)
View details
EVALUATION BOARDS Download
document-generic User guide
$125.00
Description

MMWAVEPOEEVM enables Power over Ethernet (PoE) for the TI 60-GHz to 64-GHz mmWave sensors carrier card platform (MMWAVEICBOOST and IWR6843ISK, both sold separately). MMWAVEEVMPOE simplifies deployment for development, test, and production by providing power and data transmission (...)

Features
  • Fully compatible with 60-GHz to 64-GHz mmWave sensors carrier card platform (MMWAVEICBOOST)
  • Integrated RJ45, transformer, and diode bridge for PoE power stage for cost-effective BOM
  • 7-W isolated output from flyback converter with provision for both 5-V and 3.3-V output power rails
  • Optional power header (...)
View details
DEVELOPMENT KITS Download
document-generic User guide
Description

To get started developing with this LaunchPad:
Step 1: Buy the MSP-EXP432E401Y LaunchPad
Step 2: Download the MSP432 SDK
Step 3: Complete the Out-of-Box experience and take the SimpleLink Academy trainings

The SimpleLink™ Ethernet MSP432E401Y microcontroller LaunchPad™ Development Kit is (...)

Features
  • SimpleLink Ethernet MSP432E401Y 32-bit Arm Cortex-M4F MCU
  • 80 pin LaunchPad standard leveraging the BoosterPack ecosystem
  • On-board XDS-110 debug probe
  • Ethernet and USB-OTG
  • 2 user buttons and 4 LEDs for user interaction
View details
DEVELOPMENT KITS Download
document-generic User guide
$29.99
Description

To get started developing with this LaunchPad:
Step 1: Buy the MSP-EXP432P4111 LaunchPad
Step 2: Download the MSP432 SDK
Step 3: Complete the Out-of-Box experience and take the SimpleLink Academy trainings

The SimpleLink™ MSP432P4111 LaunchPad™ development kit enables you to develop (...)

Features
  • SimpleLInk MSP432P4111 32-bit Arm Cortex M4F MCU
  • 40 pin LaunchPad standard leveraging the BoosterPack ecosystem
  • On-Board XDS-110 emulator featuring EnergyTrace+ technology
  • On-Board Segmented LCD Display
  • 2 user buttons and 2 LEDs for user interaction
View details

Design tools & simulation

SIMULATION MODELS Download
SLOM227.TSC (82 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLOM228.ZIP (6 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLOM229.TSC (82 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLOM230.ZIP (5 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLOM255.ZIP (31 KB) - PSpice Model
SIMULATION MODELS Download
SLOM256.ZIP (31 KB) - PSpice Model
SIMULATION MODELS Download
SLOM289.TSC (86 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLOM290.ZIP (6 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLOM295.ZIP (6 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLOM296.TSC (86 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVM093.ZIP (31 KB) - PSpice Model
SIMULATION MODELS Download
SLVM094.ZIP (31 KB) - PSpice Model
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 (...)
View details
CALCULATION TOOLS Download
SNVC184.ZIP (53 KB)

Reference designs

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Vehicle occupant detection reference design
TIDEP-01001 — This reference design demonstrates the use of the AWR6843 60GHz single-chip mmWave sensor with integrated DSP, as a Vehicle Occupant Detection (VOD) and Child Presence Detection (CPD) Sensor enabling the detection of life forms in a vehicle. This design provides a reference software processing chain (...)
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Short-range radar (SRR) reference design
TIDEP-0092 — The TIDEP-0092 reference design provides a foundation for short-range radar (SRR) applications using the AWR1642 evaluation module (EVM). This design allows the estimation and tracking of the position (in the azimuthal plane) and velocity of objects in its field of view up to 80 m,  travelling (...)
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TIDEP-01021 — This reference design provides a foundation for blind-spot detection (BSD), cross-traffic alert (CTA), lane-change assist (LCA), and traffic-jam assist (TJA) applications using the AWR1843BOOST evaluation module (EVM). This design allows the estimation (in the azimuthal and elevation plane (...)
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REFERENCE DESIGNS Download
High Eff 2Stage Univ Input Power Supply-Transition Mode PFC LLC Resonant Conv Reference Design
PMP8911 — Low EMI, high efficiency, high power factor and reliable power supply are main focus of the PMP8911 design for telecom applications. Transient mode (TM) power factor correction (PFC) with UCC28051 and LLC series resonant converter (SRC) with UCC25600 are applied in PMP8911. Low EMI is expected with (...)
REFERENCE DESIGNS Download
LED driver with dimming 140V…170V@0.35A
PMP5652 — The PMP5652 combines together the cascode Flyback topology (fast startup) and the constant ON time modulation to achieve high power factor and constant current driving, suitable for LED lighting application. The input voltage is the high line and a 0…10V analog input is used as dimming control (...)
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SC70 (DCK) 5 View options
SOT-23 (DBZ) 3 View options
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