Fixed voltage, 45-µA, precision micropower shunt voltage reference
Product details
Parameters
Package | Pins | Size
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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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.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | LM4040 Precision Micropower Shunt Voltage Reference datasheet (Rev. N) | Oct. 09, 2017 |
| White paper | Simplifying Signal Chain Design for High Performance in Small Systems | Oct. 22, 2020 | |
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | Jun. 28, 2019 | |
| Technical article | How to use a voltage reference as a voltage regulator | Dec. 04, 2018 | |
| White paper | Voltage reference selection basics white paper (Rev. A) | Oct. 23, 2018 | |
| Application note | Using Voltage Supervisors in High Voltage Applications | Oct. 09, 2018 | |
| E-book | Tips and tricks for designing with voltage references | May 30, 2017 | |
| Technical article | Can I get that shunt reference to go, please? | Feb. 29, 2016 | |
| Technical article | Understanding Voltage References: Ultra-low dropout - not just for the series reference | May 01, 2015 | |
| Technical article | Understanding Voltage References: Shunt vs series. Which topology is right for you? | Apr. 29, 2015 | |
| Selection guide | 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
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- CAN connector enables direct interface to car units
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AWR1642BOOST is an easy-to-use 77GHz mmWave sensor evaluation board for the AWR1642 device, with direct connectivity to the microcontroller unit (MCU) LaunchPad™ development-kit ecosystem.
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- 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
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- 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
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The BoosterPack™ contains everything required to start developing software for on-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 interfact to car units
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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 (...)
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- Onboard antenna enables field testing
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- TI LaunchPad development-kit interface to seamlessly connect to TI MCUs
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The IWR1443 BoosterPack™ plug-in module is an easy-to-use 77GHz mmWave sensor evaluation board for the single-chip IWR1443 mmWave sensing device, with direct connectivity to the TI MCU LaunchPad™ development-kit ecosystem.
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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
Description
IWR1642BOOST is an easy-to-use 77GHz mmWave sensor evaluation board for the IWR1642 device , 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 (...)
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
Description
The IWR1843 BoosterPack™ plug-in module is an easy-to-use 77GHz mmWave sensor evaluation board for the single-chip IWR1843 device, with direct connectivity to the TI MCU LaunchPad™ development-kit ecosystem.
The BoosterPack™ contains everything required to start developing software for on-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 interfact to car units
Description
Features
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- 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 (...)
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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)
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- Fully compatible with 60-GHz to 64-GHz mmWave sensors carrier card platform (MMWAVEICBOOST)
- Compatible with mmWave evalution modules with LaunchPad connectivity
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Design tools & simulation
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
- (...)
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 (...)
Reference designs
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
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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