Voltage References

Voltage references are electronic devices that provide a fixed output voltage. They provide a constant voltage regardless of external factors. This includes the load on the device, temperature or fluctuations in the power supply. Learn more in our Complete Guide to Voltage References.

Voltage references have different characteristics depending on their purpose. Voltage references used in laboratory applications are designed to have extremely high precision and accuracy, whereas those used as regulators for computer power supplies are much cheaper but less precise.

There are many different kinds of voltage references, generally categorised by type, tolerance, rated voltage, reference voltage and rated current. The most common tolerances are ±2%, ±1% and ±0.5%, but voltage references are available even up to ±40%.

Voltage reference ICs come in a standard semiconductor package, such as PDIP, SO, SOIC and SOT-23. The pin count may also be combined with the package type, for example SO-8.

Types of voltage references

  • Two-terminal shunt voltage reference
  • Three-terminal series voltage reference
  • Band-gap voltage reference
  • Low noise voltage reference
  • Micropower voltage reference

What are voltage references used for?

Voltage references can be used for a variety of different precision measurement and control systems such as power supplies in personal computers and analogue-to-digital converters. They are also used in scientific applications and in medical equipment where voltage variations need to be tested regularly. Voltage references are also used in battery-powered devices.


...
Read more Read less

Filters

Viewing 1 - 20 of 1305 products
Results per page
Description Price Nominal Voltage Package Type Reference Type Initial Accuracy Mounting Type Topology Maximum Output Current Maximum Input Voltage Minimum Output Voltage Maximum Output Voltage Pin Count Line Regulation Load Regulation Dimensions
RS Stock No. 145-1010
Mfr. Part No.TL431ACLP
£0.123
Each (In a Bag of 1000)
Units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS Stock No. 428-436
Mfr. Part No.TL431ACLP
£0.36
Each
Units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS Stock No. 661-9827
Mfr. Part No.TL431CLPR
£0.249
Each (In a Pack of 10)
Units
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS Stock No. 169-5617
Mfr. Part No.TL431CLPR
£0.081
Each (On a Reel of 2000)
Units
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS Stock No. 534-3065
Mfr. Part No.LM4040DIZ-5.0/NOPB
£0.59
Each
Units
5V TO-92 Precision 1% Through Hole Shunt 15mA - - - 3 - - 5.2 x 4.19 x 5.2mm
RS Stock No. 121-8776
Mfr. Part No.LM4040DIZ-5.0/NOPB
£0.198
Each (In a Box of 1800)
Units
5V TO-92 Fixed ±1.0 % Through Hole Shunt 15mA - - - 3 - - 5.2 x 4.19 x 5.2mm
RS Stock No. 534-3037
Mfr. Part No.LM4040AIZ-2.5/NOPB
£1.56
Each
Units
2.5V TO-92 Fixed ±0.1 % Through Hole Shunt 15mA - - - 3 - 6 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 121-8773
Mfr. Part No.LM4040AIZ-2.5/NOPB
£0.934
Each (In a Box of 1800)
Units
2.5V TO-92 Fixed ±0.1 % Through Hole Shunt 15mA - - - 3 - 6 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 534-2860
Mfr. Part No.LM385Z-1.2/NOPB
£0.67
Each
Units
1.235V TO-92 Fixed ±2.0 % Through Hole Shunt 20mA - - - 3 - 20 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 162-4726
Mfr. Part No.LM385Z-1.2/NOPB
£0.284
Each (In a Box of 1800)
Units
1.235V TO-92 Fixed ±2.0 % Through Hole Shunt 20mA - - - 3 - 20 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 527-984
Mfr. Part No.TL431AILP
£0.341
Each (In a Pack of 25)
Units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS Stock No. 523-7011
Mfr. Part No.REF195GSZ
£2.99
Each
Units
5V SOIC Fixed ±0.04 % Surface Mount Series 30mA 18 V 4.99 V 5.01 V 8 8 ppm/V 8 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 825-3338
Mfr. Part No.REF5025AIDGKT
£3.07
Each (In a Pack of 2)
Units
2.5V VSSOP Fixed ±0.1 % Surface Mount Series ±10mA 18 V - 2.5 V 8 1 ppm/V 50 ppm/mA 3.1 x 3.1 x 0.95mm
RS Stock No. 921-3012
Mfr. Part No.REF5025AIDGKT
£1.875
Each (On a Reel of 250)
Units
2.5V VSSOP Fixed ±0.1 % Surface Mount Series ±10mA 18 V - 2.5 V 8 1 ppm/V 50 ppm/mA 3.1 x 3.1 x 0.95mm
RS Stock No. 461-9529
Mfr. Part No.REF3012AIDBZT
£1.072
Each (In a Pack of 5)
Units
1.25V SOT-23 Fixed ±0.2 % Surface Mount Series 25mA 7 V 1.248 V 1.253 V 3 190 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS Stock No. 145-6903
Mfr. Part No.REF3012AIDBZT
£0.842
Each (On a Reel of 250)
Units
1.25V SOT-23 Fixed ±0.2 % Surface Mount Series 25mA 7 V 1.248 V 1.253 V 3 190 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS Stock No. 121-8695
Mfr. Part No.LM336Z-5.0/NOPB
£0.489
Each (In a Box of 1800)
Units
5V TO-92 Fixed ±1.0 % Through Hole Shunt 10mA - 4.8 V 5.2 V 3 - 20 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 533-5806
Mfr. Part No.LM336Z-5.0/NOPB
£0.78
Each
Units
5V TO-92 Precision 1% Through Hole Shunt 10mA - 4.8 V 5.2 V 3 - 20 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 681-1083
Mfr. Part No.MCP1541-I/TO
BrandMicrochip
£0.75
Each (In a Pack of 2)
Units
4.096V TO-92 Fixed ±1.0 % Through Hole Series 20mA 7 V 4.055 V 4.137 V 3 350 μV/V 1.3 mV/mA 4.71 x 3.62 x 4.62mm
RS Stock No. 165-4661
Mfr. Part No.MCP1541-I/TO
BrandMicrochip
£0.442
Each (In a Bag of 1000)
Units
4.096V TO-92 Fixed ±1.0 % Through Hole Series 20mA 7 V 4.055 V 4.137 V 3 350 μV/V 1.3 mV/mA 4.71 x 3.62 x 4.62mm