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. 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
RS Stock No. 751-5228
Mfr. Part No.ZTL431AFTA
SGD0.226
Each (In a Pack of 50)
units
2.5V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 20 V 2.475 V 20 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 545-5562
Mfr. Part No.LT1021CCN8-10#PBF
SGD9.32
Each
units
10V PDIP Fixed ±0.05 % Through Hole Series/Shunt 10mA 40 V 9.995 V 10.005 V 8 4 ppm/V 100 ppm/mA 10.16 x 6.48 x 3.3mm
RS Stock No. 162-6573
Mfr. Part No.LM4040D30IDCKR
SGD0.401
Each (On a Reel of 3000)
units
3V SC-70 Fixed ±1.0 % Surface Mount Shunt 80µA - - 3 V 5 - - 2.15 x 1.4 x 1mm
RS Stock No. 160-3352
Mfr. Part No.REF02HPZ
SGD6.168
Each (In a Tube of 50)
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. 922-7601
Mfr. Part No.ZR431FTA
SGD0.325
Each (On a Reel of 3000)
units
2.5 - 20V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 20 V 2.5 V 20 V 3 - - 2.9 x 1.3 x 1mm
RS Stock No. 460-932
Mfr. Part No.LM336M-5.0/NOPB
SGD0.899
Each (In a Pack of 10)
units
2.5V SOIC Fixed ±1.0 % Surface Mount Shunt 10mA - 4.8 V 5.2 V 8 - 20 mV 4.9 x 3.9 x 1.45mm
RS Stock No. 527-984
Mfr. Part No.TL431AILPE3
SGD0.18
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. 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. 526-307
Mfr. Part No.TL431CDR
SGD0.173
Each (In a Pack of 25)
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. 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. 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. 810-289
Mfr. Part No.TL431ILP
SGD0.69
Each
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. 154-891
Mfr. Part No.ZR431FTA
SGD0.683
Each (In a Pack of 10)
units
2.5 - 20V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 20 V 2.5 V 20 V 3 - - 2.9 x 1.3 x 1mm
RS Stock No. 823-1801
Mfr. Part No.ZR40402F25TA
SGD0.58
Each (In a Pack of 50)
units
2.5V SOT-23 Fixed ±2.0 % Surface Mount Series - - - - 3 - - 3.04 x 1.4 x 1.02mm
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. 162-5928
Mfr. Part No.TLV431AIDBVR
SGD0.362
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. 923-2405
Mfr. Part No.REF5050AID
SGD4.199
Each (In a Tube of 75)
units
5V 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. 809-5374
Mfr. Part No.TL431AILP
SGD0.192
Each (In a Pack of 5)
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. 808-3965
Mfr. Part No.LM385D-1.2R2G
SGD0.491
Each (On a Tape of 25)
units
1.235V SOIC Fixed ±2% Surface Mount Shunt - - 1.247 V 1.223 V 8 - - 5 x 4 x 1.5mm
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%.