Shunt voltage references

Low IQ and high precision for your power and signal chain applications

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We offer a wide variety of shunt voltage references (VREFs) for use in precision signal chain and optocoupler flyback converter applications. Our low-power shunt VREFs and high-accuracy shunt VREFs enable systems such as battery-powered and loop-powered industrial applications to more demanding system requirments using high-resolution data converters. The shunt references also meet the needs of other applications such as current sources, voltage monitors and LED drivers.

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Low IQ

Reduce current regulation in your design to meet low-power standards.

High precision

Improve precision on power rails or noncalibrated signal chain conditioning.

Standard

Simplify your design with industry standard 1.24-V or 2.5-V voltage references.

Automotive

Leverage AEC-Q100 qualified shunt voltage references for automotive designs.

Featured shunt voltage references

Reference designs related to Shunt voltage references

Use our reference design selection tool to find designs that best match your application and parameters.

Power trends

Low quiescent current (IQ)

Minimize idle power consumption with low-quiescent current (IQ) shunt voltage references. Low idle power consumption in the power supply can help you design Energy Star-rated appliances and small but reliable power adapters. Our low-IQ shunt voltage references can help your power-supply designs achieve low standby power and longer battery run times, while lowering system costs.

Selection guide
431 Device Nomenclature (Rev. B)
Shunt reference 431 family naming convention and side-by-side comparisons of the key diffeences amoingst the footprint compaitible devices.
PDF
Application note
Using Voltage Supervisors in High Voltage Applications
Learn how shunt voltage references can help you successfully use voltage supervisors in high-voltage applications.
PDF
Featured products for low quiescent current (IQ)
ATL431LI ACTIVE Low-IQ programmable shunt regulator offered in an ultra-small DQN package
LM385-ADJ ACTIVE Adjustable, 70°C, micropower voltage reference
REF1112 ACTIVE 1-µA, 3-pin SOT-23 10-ppm/°C shunt voltage reference
High precision

Minimize power consumption and extend battery life with our high-accuracy shunt references. Some power supplies, such as those used in servers and industrial instruments, accuracy and stability requirements demand more precise voltage references that can keep the output accurate across changes in input voltage, output load and operating temperature.  Our portfolio of high-accuracy, low-temperature coefficient shunt voltage references help enable a more efficient power supply.

Featured products for high precision
LM4050-N ACTIVE 50-ppm/°C precision micropower shunt voltage reference
LM4040-N ACTIVE 100-ppm/°C precision micropower shunt voltage reference
LM4051-N ACTIVE Fixed & adjustable, precision micropower shunt voltage reference

Technical resources

Application note
Application note
Automotive LED Lighting with Adjustable Shunt References
Learn how to use a simple adjustable shunt voltage reference to power LEDs in automotive lighting applications.
document-pdfAcrobat PDF
Application note
Application note
Using Voltage Supervisors in High Voltage Applications
Learn how shunt voltage references can help you successfully use voltage supervisors in high-voltage applications.
document-pdfAcrobat PDF
E-book
E-book
Tips and tricks for designing with voltage references (Rev. A)
Tips and tricks for designing with voltage references provides a comprehensive overview of voltage reference basics and application design.
document-pdfAcrobat PDF