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. 651-3293
Mfr. Part No.LM4132DMF-4.1/NOPB
SGD2.16
Each
units
4.096V SOT-23 Fixed ±0.4 % Surface Mount Series 20mA 6 V - - 5 100 ppm/V 25 ppm/mA 2.92 x 1.6 x 1.02mm
RS Stock No. 111-1173
Mfr. Part No.AD587KNZ
SGD16.229
Each (In a Tube of 50)
units
10V PDIP Fixed ±0.05 % Through Hole Series 10mA 36 V 9.995 V 10.005 V 8 100 μV/V 100 μV/mA 9.27 x 7.24 x 3.43mm
RS Stock No. 162-4726
Mfr. Part No.LM385Z-1.2/NOPB
SGD0.441
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. 146-0591
Mfr. Part No.AS431ANTR-G1
SGD0.067
Each (On a Reel of 3000)
units
2.5V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 36 V 2.5 V 36 V 3 - - 3 x 1.4 x 1.1mm
RS Stock No. 106-7054
Mfr. Part No.REF01CSZ
SGD2.921
Each (In a Tube of 98)
units
10V SOIC Fixed ±1.0 % Surface Mount Series 8mA 36 V 9.9 V 10.1 V 8 150 ppm/V 150 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 160-0690
Mfr. Part No.ADR4533ARZ
SGD6.488
Each (In a Tube of 98)
units
3.3V SOIC Fixed ±0.04 % Surface Mount Series 10mA 15 V - 3.3 V 8 10 ppm/V 120 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 166-3795
Mfr. Part No.LM336Z25X
SGD0.169
Each (On a Reel of 2000)
units
2.5V TO-92 Programmable ±1.0 % Through Hole Shunt 15 (Reverse)mA - - - 3 - - 5.2 x 4.19 x 5.33mm
RS Stock No. 121-8297
Mfr. Part No.REF5020AID
SGD4.221
Each (In a Tube of 75)
units
2.048V SOIC Fixed ±0.05 % Surface Mount Series 10mA 18 V - - 8 1 ppm/V 50 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 523-7415
Mfr. Part No.AD587KNZ
SGD19.09
Each
units
10V PDIP Fixed ±0.05 % Through Hole Series 10mA 36 V 9.995 V 10.005 V 8 100 μV/V 100 μV/mA 9.27 x 7.24 x 3.43mm
RS Stock No. 106-6384
Mfr. Part No.AD581JH
SGD21.626
Each (In a Tube of 100)
units
10V TO-5 Fixed ±0.3 % Through Hole Series 10mA 40 V - - 3 0.005 %/V 500 μV/mA 9.4 x 9.4 x 4.7mm
RS Stock No. 661-9534
Mfr. Part No.TL431BIDBZT
SGD0.996
Each (In a Pack of 5)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 122-2409
Mfr. Part No.ZR40402F25TA
SGD0.349
Each (On a Reel of 3000)
units
2.5V SOT-23 Fixed ±2.0 % Surface Mount Series - - - - 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 404-291
Mfr. Part No.REF5020AID
SGD4.74
Each
units
2.048V SOIC Fixed ±0.05 % Surface Mount Series 10mA 18 V - - 8 1 ppm/V 50 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 146-0949
Mfr. Part No.AS431BNTR-G1
SGD0.062
Each (On a Reel of 3000)
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. 802-3890
Mfr. Part No.ADR4533ARZ
SGD6.60
Each
units
3.3V SOIC Fixed ±0.04 % Surface Mount Series 10mA 15 V - 3.3 V 8 10 ppm/V 120 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 121-8468
Mfr. Part No.TL431ILP
SGD0.215
Each (In a Box of 1000)
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. 461-9529
Mfr. Part No.REF3012AIDBZT
SGD2.10
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. 179-1626
Mfr. Part No.TL431CD
SGD0.364
Each (In a Tube of 75)
units
2.5 - 36V SOIC Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.91 x 1.58mm
RS Stock No. 661-9596
Mfr. Part No.TLV431ACDBZR
SGD0.912
Each (In a Pack of 5)
units
1.24 - 6V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 15mA - 1.24 V 6 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 545-5556
Mfr. Part No.LT1021CCN8-5#PBF
SGD8.87
Each
units
5V PDIP Fixed ±0.05 % Through Hole Series 10mA 40 V 4.998 V 5.003 V 8 12 ppm/V 100 ppm/mA 10.16 x 6.48 x 3.3mm
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%.