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What is a Voltage Reference?

A voltage reference is an electronic device which produces a constant voltage regardless of the loading on the device, temperature changes, passage of time and power supply variations. The voltage reference circuit most commonly used in integrated circuits is the bandgap voltage reference. A bandgap voltage reference uses analog circuits in order to add a multiple of the voltage difference between two bipolar junctions biased at different current densities to the voltage developed across a diode. The diode voltage has a negative temperature coefficient and the junction voltage difference has a positive temperature coefficient. When added in the proportion which is required in order to make these coefficients cancel each other, the resultant constant value is a voltage which is equal to the bandgap voltage of the semiconductor.

Types of Voltage References

There are several different kinds of voltage references. At Future Electronics we stock many of the most common types categorized by type, tolerance, rated voltage, reference voltage, forward (drive) current, rated current, quiescent current and packaging type. The parametric filters on our website can help refine your search results depending on the required specifications.

The most common sizes for tolerance are ± 2%, ± 1% and ± 0.5%. We also carry voltage references with tolerances up to ± 40 %. Reference voltage can be up to 36 V, with the most common sizes being 1.225 V, 2.495 V, 2.5 V and 5 V.

Voltage References from Future Electronics

Future Electronics has a complete selection of programmable voltage references from several chip manufacturers that can be used as an adjustable voltage reference, DC voltage regulator, voltage regulator IC (integrated circuit) high voltage regulator, AC voltage regulator, bandgap voltage reference or for any circuits that may require a voltage reference. Simply choose from the voltage reference technical attributes below and your search results will quickly be narrowed in order to match your specific voltage reference application needs.

If you have a preferred brand, we deal with several manufacturers such as Analog Devices, Micrel Semiconductor, Microchip, ON Semiconductor, Zetex and STMicroelectronics, among others. You can easily refine your voltage reference product search results by clicking your preferred voltage reference brand below from our list of manufacturers.

Applications for Voltage References:

Voltage references are found in analog to digital converters, digital to analog converters, power supply voltage regulators and several other measurement and control systems and power supplies of precision electronic equipment. They are particularly found in systems where performance is greatly affected by small changes in the voltage applied. Voltage references greatly vary in performance. Laboratory and medical voltage standards have precisions and stability measured in fractions of one percent, whereas computer power supply regulators may hold to within a few per cent of the nominal value.

Choosing the Right Voltage Reference:

When you are looking for the right voltage references, you can filter the results by various attributes with the FutureElectronics.com parametric search: by Reference Voltage (-5 V, 1.225 V, 2.495 V, 2.5 V, 5 V, …), Quiescent Current (up to 10 kA) and Forward Current (from 9.5 uA to 10 A) to name a few. You will be able to find the right DC voltage regulator, AC voltage regulator, adjustable voltage reference, voltage regulator IC (integrated circuit), bandgap voltage reference, high voltage regulator or for any circuits that may require a voltage reference.

Voltage References in Production Ready Packaging or R&D Quantities

If the quantity of voltage references required is less than a full reel, we offer to customers many of our voltage reference products in tube, tray or individual quantities that will help you avoid unneeded surplus.

In addition, Future Electronics offers its clients a unique bonded inventory program designed to eliminate potential problems that could arise from an unpredictable supply of products containing raw metals and products with long or erratic lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.



Featured Voltage Reference Products:


Manufacturer Part Number Description
Analog Devices REF02CSZ-REEL7 REF02 Series 1.6 mA 5 V Precision Voltage Reference Transducer - SOIC-8
Analog Devices REF02CSZ REF02 Series 1.6 mA 5 V Precision Voltage Reference Transducer - SOIC-8
Analog Devices AD780ARZ-REEL7 AD780 Series 1 mA 2.5 V/3.0 V Precision Bandgap Voltage Reference - SOIC-8
Micrel Semiconductor LM4040CYM3-2.5 TR LM4040 Series 2.5 V ±0.5% Precision Micropower Shunt Voltage Reference-SOT-23-3
Micrel Semiconductor LM4041CYM3-ADJ TR LM4041 Series Adj. ±0.5% Precision Micropower Shunt Voltage Reference-SOT-23-3
Micrel Semiconductor LM4040CYM3-5.0 TR LM4040 Series 5 V ±0.5% Precision Micropower Shunt Voltage Reference-SOT-23-3
Microchip MCP1541T-I/TT MCP1541 Series 4.3 to 5.5 V Supply SMT 4.096 V Voltage Reference SOT-23-3
Microchip MCP1824ST-3302E/DB MCP1824 Series 3.3 V 300 mA Low Quiescent Current LDO Regulator-SOT-223-3
Microchip MCP1824T-ADJE/DC MCP1824 Series 3.3 V 300 mA Low Quiescent Current Adj. LDO Regulator-SOT-223-3
ON Semiconductor LM385BZ-1.2G LM385 Series 1.235 V 20 mA Micropower Voltage Reference Diode - TO-92
ON Semiconductor LM385BD-2.5R2G LM385 Series 2.5 V 20 mA SMT Micropower Voltage Reference Diode - SOIC-8
ON Semiconductor LM385Z-1.2G LM385 Series 1.235 V 20 mA Micropower Voltage Reference Diode - TO-92
ON Semiconductor LM285Z-1.2G LM285 Series 1.235 V 20 mA Micropower Voltage Reference Diode - TO-92
ON Semiconductor LM385Z-2.5G LM385 Series 2.5 V 20 mA Micropower Voltage Reference Diode - TO-92
STMicroelectronics L79L05ABD13TR L79L05AB Series -5 V 100 mA Surface Mount Negative Voltage Regulator - SOIC-8
STMicroelectronics TL431ACZ TL431 Series Adjustable 2.5 to 36 V ±1 % Shunt Voltage Reference - TO-92-3
STMicroelectronics L79L05ABD13TR L79L05AB Series -5 V 100 mA Surface Mount Negative Voltage Regulator - SOIC-8
STMicroelectronics TL431CL3T TL431 Series Adjustable 2.5 to 36 V ±2 % Shunt Voltage Reference - SOT-23-3
STMicroelectronics TS431BILT TS431 Series Adjustable 1.24 to 6 V ±1 % Shunt Voltage Reference - SOT-23-5
STMicroelectronics TL431ACDT TL431 Series Single Channel Programmable Precision Reference - SOIC-8
Zetex ZSR330GTA ZSR330 Series 3.3 V 2.5 % SMT Fixed Positive Local Voltage Regulator - SOT-223
Zetex ZRC330F01TA ZRC330 Series 3.3 V 1% SMT Precision Low Knee Current Voltage Reference - SOT-23
Zetex ZRC250F02TA ZRC250 Series 2.5 V 2 % Precision Low Knee Current Voltage Reference - SOT-23
Zetex ZXRE1004DFTA ZXRE1004 Series 1.22 V 1 % Micropower Voltage Reference - SOT-23
Zetex ZXRE4041DFTA ZXRE4041 Series 1.225 V 1 % Surface Mount Micropower Voltage Reference - SOT-23

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