Voltage References

Voltage references are electronic devices that provide a fixed voltage. They provide a constant voltage regardless of external factors like the load on the device or fluctuations in the power supply.


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. 


Types of voltage references

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%. 


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 analog-to-digital converters. They are also used in scientific applications and in medical equipment where voltage variations need to be tested regularly. 


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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. 145-7606
Mfr. Part No.LT1004CS8-2.5#PBF
SGD3.851
Each (In a Tube of 100)
units
2.5V SOIC Fixed ±0.8 % Surface Mount Shunt 20mA - - 2.5 V 8 - - 5.004 x 3.988 x 1.498mm
RS Stock No. 145-8772
Mfr. Part No.TS2431AILT
SGD0.193
Each (On a Reel of 3000)
units
2.5 - 24V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 25 V 2.5 V 24 V 3 - - 2.9 x 1.3 x 0.95mm
RS Stock No. 533-5806
Mfr. Part No.LM336Z-5.0/NOPB
SGD0.97
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. 858-0753
Mfr. Part No.LT1460EIS8-5#PBF
SGD8.485
Each (In a Pack of 2)
units
5V SOIC Fixed ±0.125 % Surface Mount Series 40mA 30 V 4.99 V 5 V 8 1000 ppm/V 4000 ppm/mA 5 x 3.98 x 1.49mm
RS Stock No. 121-8695
Mfr. Part No.LM336Z-5.0/NOPB
SGD0.458
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. 162-5829
Mfr. Part No.LM4040D30IDBZR
SGD0.545
Each (On a Reel of 3000)
units
3V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - 8 mV 2.92 x 1.3 x 1mm
RS Stock No. 864-7878
Mfr. Part No.TL431ACDR2G
SGD0.381
Each (In a Pack of 50)
units
2.5 - 36V SOIC Programmable ±1.0 % Surface Mount Shunt 100mA - 2.44 V 36 V 8 53 mV 25 mV 5 x 4 x 1.5mm
RS Stock No. 779-8892
Mfr. Part No.LT1004CS8-2.5#PBF
SGD3.83
Each (In a Pack of 2)
units
2.5V SOIC Fixed ±0.8 % Surface Mount Shunt 20mA - - 2.5 V 8 - - 5.004 x 3.988 x 1.498mm
RS Stock No. 799-8222
Mfr. Part No.MAX873BESA+
BrandMaxim
SGD7.12
Each
units
2.5V SOIC Fixed ±0.1 % Surface Mount Series 10mA 18 V 2.4975 V 2.5025 V 8 6 ppm/V 1900 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 921-0717
Mfr. Part No.AZ431LANTR-G1
SGD0.178
Each (In a Pack of 50)
units
1.24V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 18 V 1.24 V 18 V 3 - - 3 x 1.4 x 1.1mm
RS Stock No. 158-1979
Mfr. Part No.AD1582BRTZ-REEL7
SGD2.138
Each (On a Reel of 3000)
units
2.5V SOT-23 Fixed ±0.08 % Surface Mount Series 5mA 12 V 2.498 V 2.502 V 3 25 μV/V 3.5 mV/mA 2.9 x 1.3 x 1.02mm
RS Stock No. 535-9313
Mfr. Part No.LM336BM-2.5/NOPB
SGD2.34
Each (In a Pack of 5)
units
2.5V SOIC Fixed ±2.0 % Surface Mount Shunt 10mA - 2.44 V 2.54 V 8 - 10 mV 4.9 x 3.9 x 1.45mm
RS Stock No. 796-8029
Mfr. Part No.LM285D-1-2
SGD0.878
Each (In a Pack of 5)
units
1.235V SOIC Fixed ±1.0 % Surface Mount Shunt - - - - 8 - 30 mV 5 x 4 x 1.5mm
RS Stock No. 709-1545
Mfr. Part No.AD1582BRTZ-REEL7
SGD3.078
Each (In a Pack of 5)
units
2.5V SOT-23 Fixed ±0.08 % Surface Mount Series 5mA 12 V 2.498 V 2.502 V 3 25 μV/V 3.5 mV/mA 2.9 x 1.3 x 1.02mm
RS Stock No. 463-509
Mfr. Part No.LM285Z-1.2G
SGD0.661
Each (In a Pack of 10)
units
1.235V TO-92 Fixed ±1.0 % Through Hole Shunt 20mA - 1.223 V 1.247 V 3 - 10 mV 5.2 x 4.19 x 5.33mm
RS Stock No. 101-8305
Mfr. Part No.LM285Z-1.2G
SGD0.421
Each (In a Bag of 2000)
units
1.235V TO-92 Fixed ±1.0 % Through Hole Shunt 20mA - 1.223 V 1.247 V 3 - 10 mV 5.2 x 4.19 x 5.33mm
RS Stock No. 761-5946
Mfr. Part No.LM431BCM3/NOPB
SGD0.677
Each (In a Pack of 10)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA - 2.47 V 2.52 V 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 461-9541
Mfr. Part No.REF3025AIDBZT
SGD2.172
Each (In a Pack of 5)
units
2.5V SOT-23 Fixed ±0.2 % Surface Mount Series 25mA 7 V 2.495 V 2.505 V 3 325 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS Stock No. 535-9329
Mfr. Part No.LM336BM-5.0/NOPB
SGD1.36
Each (In a Pack of 5)
units
5V SOIC Fixed ±1.0 % Surface Mount Shunt 10mA - 4.9 V 5.1 V 8 - 20 mV 4.9 x 3.9 x 1.45mm
RS Stock No. 751-5234
Mfr. Part No.ZTL432AFTA
SGD0.316
Each (On a Tape of 50)
units
2.5V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 20 V 2.5 V 20 V 3 - - 3.04 x 1.4 x 1.02mm
Related Products
Precison Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precison Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precison Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precison Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.
Precison Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precison Fixed and Adjustable Voltage Reference ICs utilsing series, shunt or series/shunt topologies and available in both through-hole and surface mount packages. Voltage References are available with initial accuracies of ±0.02 to ±2%.