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. 111-5568
Mfr. Part No.MCP1501-10E/SN
BrandMicrochip
SGD1.00
Each (In a Pack of 10)
units
1.02V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 1.023 V 1.025 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 921-0657
Mfr. Part No.AS431BNTR-G1
SGD0.122
Each (In a Pack of 100)
units
2.5V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 36 V 2.5 V 36 V 3 - - 3 x 1.4 x 1.1mm
RS Stock No. 523-7005
Mfr. Part No.AD680ARZ
SGD11.16
Each
units
2.5V SOIC Fixed ±0.2 % Surface Mount Series 10mA 36 V 2.495 V 2.505 V 8 40 μV/V 100 μV/mA 5 x 4 x 1.5mm
RS Stock No. 166-3619
Mfr. Part No.KA431AZBU
SGD0.108
Each (In a Bag of 10000)
units
2.5 - 36V TO-92 Programmable ±1.0 % Through Hole Shunt - - - 36 V 3 - - 5.2 x 4.19 x 5.33mm
RS Stock No. 912-7220
Mfr. Part No.AD587JRZ
SGD7.783
Each (In a Tube of 98)
units
10V SOIC Fixed ±0.1 % Surface Mount Series 10mA 36 V 9.99 V 10.01 V 8 100 μV/V 100 μV/mA 5 x 4 x 1.5mm
RS Stock No. 166-2430
Mfr. Part No.KA431AZTA
SGD0.108
Each (On a Tape of 2000)
units
2.5 - 36V TO-92 Programmable ±1.0 % Through Hole Shunt 100mA - 2.5 V 36 V 3 - - 4.58 x 3.86 x 4.58mm
RS Stock No. 811-5602
Mfr. Part No.LM4030BMF-2.5/NOPB
SGD2.524
Each (In a Pack of 10)
units
2.5V SOT-23 Fixed ±0.15 % Surface Mount Shunt 50µA - - 2.5 V 5 - - 3.05 x 1.75 x 1.3mm
RS Stock No. 759-0459
Mfr. Part No.ADR421BRZ-REEL7
SGD16.87
Each
units
2.5V SOIC Fixed ±0.04 % Surface Mount Series 10mA 15 V 2.499 V 2.501 V 8 35 ppm/V 70 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 759-2953
Mfr. Part No.ADR435BRMZ
SGD13.28
Each
units
4.096V MSOP Fixed ±0.04 % Surface Mount Series 30mA 18 V 4.998 V 5.002 V 8 20 ppm/V 15 ppm/mA 3.2 x 3.2 x 0.95mm
RS Stock No. 739-0300
Mfr. Part No.KA431AZTA
SGD0.322
Each (In a Pack of 10)
units
2.5 - 36V TO-92 Programmable ±1.0 % Through Hole Shunt 100mA - 2.5 V 36 V 3 - - 4.58 x 3.86 x 4.58mm
RS Stock No. 145-3275
Mfr. Part No.TL431CLPG
SGD0.131
Each (In a Bag of 2000)
units
2.5 - 36V TO-92 Adjustable ±2.2 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 5.2 x 4.19 x 5.33mm
RS Stock No. 534-2860
Mfr. Part No.LM385Z-1.2/NOPB
SGD0.60
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. 921-6932
Mfr. Part No.LM4041BIM3-1.2/NOPB
SGD0.914
Each (On a Reel of 1000)
units
1.225V SOT-23 Fixed ±0.1 % Surface Mount Shunt 12mA - - 1.2 V 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 162-5928
Mfr. Part No.TLV431AIDBVR
SGD0.545
Each (On a Reel of 3000)
units
1.24 - 6V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 15mA - 1.24 V 6 V 5 - - 2.9 x 1.6 x 1.15mm
RS Stock No. 809-5211
Mfr. Part No.LM4040D30IDCKR
SGD0.752
Each (In a Pack of 10)
units
3V SC-70 Fixed ±1.0 % Surface Mount Shunt 80µA - - 3 V 5 - - 2.15 x 1.4 x 1mm
RS Stock No. 809-9272
Mfr. Part No.REF02HPZ
SGD7.095
Each (In a Pack of 2)
units
5V PDIP Fixed ±0.5 % Through Hole Series - 40 V 4.975 V 5.025 V 8 0.01 %/V 0.01 %/mA 10.16 x 7.11 x 4.95mm
RS Stock No. 178-8930
Mfr. Part No.TL431AILP
SGD0.326
Each (On a Reel of 1000)
units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA - - 36 V 3 - - 5.21 x 4.19 x 5.34mm
RS Stock No. 121-8838
Mfr. Part No.LM4040AIM3-3.0/NOPB
SGD1.259
Each (On a Reel of 1000)
units
3V SOT-23 Fixed ±0.1 % Surface Mount Shunt 15mA 37 V - - 3 - 6 mV 2.92 x 1.3 x 0.93mm
RS Stock No. 738-5115
Mfr. Part No.ZRC400F01TA
SGD1.506
Each (In a Pack of 5)
units
4.096V SOT-23 Fixed ±1.0 % Surface Mount Shunt 5mA - 4.06 V 4.14 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 912-9882
Mfr. Part No.ADR435BRMZ
SGD10.355
Each (In a Tube of 50)
units
4.096V MSOP Fixed ±0.04 % Surface Mount Series 30mA 18 V 4.998 V 5.002 V 8 20 ppm/V 15 ppm/mA 3.2 x 3.2 x 0.95mm
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%.