Improve accuracy & reduce power with our shunt voltage references
Low IQ and high precision for your power and signal chain applications
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 help your system meet US DoE, EU CoC and other industry standby power requirements. Our high accuracy shunt VREFs provide precision in demanding system requirements for applications using high-resolution data converters. We offer shunt VREFs for battery-operated and loop-powered industrial sensing applications in factory, building automation and smart meters, as well as AEC-Q100 qualified devices for automotive applications in hybrid electric vehicles and electric vehicles. Our devices meet the needs of other applications such as current sources, voltage monitors or LED drivers.
Featured shunt voltage references
ATL431LI
Adjustable 2.5-V to 36-V shunt voltage reference with 80-µA low current regulation and optimized input current for high performance in isolated power supply circuits
LM4040-N
Enhanced Zener diode replacement that provides an accurate voltage at lower current. The D and E grades are cost competitive to Zener diodes.
Learn more about shunt voltage references
Featured documentation
Automotive LED Lighting with Adjustable Shunt References
Learn how to use a simple adjustable shunt voltage reference to power LEDs in automotive lighting applications.
431 Device Nomenclature (Rev. B)
Refer to this document to learn more about our 431 and 432 family of shunt voltage references.
Using Voltage Supervisors in High Voltage Applications
Learn how shunt voltage references can help you successfully use voltage supervisors in high-voltage applications.
Additional resources
Shunt voltage reference external resistor quick start calculator
The shunt voltage reference calculator enables you to quickly calculate external resistor values relative to voltage reference, supply, and load current bounds. You can easily see real-time effects of input values, get notification of valid and invalid outputs, and more.
Featured technical articles for shunt VREFs
Technical resources
Browse complete board-level and system-level reference design circuits to help you quickly evaluate and customize your power system.
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