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. 522-9975
Mfr. Part No.REF195GPZ
PHP237.51
Each
units
5V PDIP Fixed ±0.04 % Through Hole Series 30mA 18 V 4.99 V 5.01 V 8 8 ppm/V 8 ppm/mA 9.27 x 7.24 x 3.43mm
RS Stock No. 739-0448
Mfr. Part No.LM336Z25
PHP18.90
Each (In a Pack of 5)
units
2.5V TO-92 Fixed ±1.0 % Through Hole Shunt - - 2.44 V 2.54 V 3 - 10 mV 4.58 x 3.86 x 4.58mm
RS Stock No. 100-0661
Mfr. Part No.ISL21080DIH309Z-TK
BrandIntersil
PHP106.526
Each (On a Tape of 5)
units
0.9V SOT-23 Fixed ±0.2 % Surface Mount Series ±7mA 5.5 V - 0.9 V 3 350 μV/V 350 μV/mA 2.92 x 1.3 x 0.95mm
RS Stock No. 159-8076
Mfr. Part No.AD588BQ
PHP9,439.438
Each (In a Tube of 25)
units
5 V, 10V CERDIP Programmable ±0.02 % Through Hole Series 10mA 36 V - 10 V 16 ±200 μV/V ±50 μV/mA 21.34 x 7.87 x 3.56mm
RS Stock No. 145-0411
Mfr. Part No.TL432BIDBZT
PHP25.673
Each (On a Reel of 250)
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. 145-6614
Mfr. Part No.TL431CDBVR
PHP4.749
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA - - 36 V 5 - - 3.05 x 1.75 x 1.3mm
RS Stock No. 809-5387
Mfr. Part No.TL431CDBVR
PHP14.465
Each (On a Tape of 10)
units
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA - - 36 V 5 - - 3.05 x 1.75 x 1.3mm
RS Stock No. 660-6629
Mfr. Part No.REF5050ID
PHP320.48
Each
units
5V SOIC Fixed ±0.05 % Surface Mount Series 10mA 18 V - - 8 1 ppm/V 30 ppm/mA 4.9 x 3.91 x 1.58mm
RS Stock No. 145-5708
Mfr. Part No.LT1004CZ-1.2#PBF
PHP107.627
Each (In a Bag of 100)
units
1.235V TO-92 Fixed ±0.3 % Through Hole Shunt 20mA - 1.225 V 1.245 V 3 - 10 mV 4.57 x 3.56 x 4.57mm
RS Stock No. 161-0592
Mfr. Part No.ADR425ARMZ
PHP270.995
Each (In a Tube of 50)
units
5V MSOP Fixed ±0.13 % Surface Mount Series 10mA 18 V 4.994 V 5.006 V 8 35 ppm/V 70 ppm/mA 3 x 3 x 0.85mm
RS Stock No. 761-8465
Mfr. Part No.LT1790AIS6-5#TRMPBF
PHP394.19
Each
units
5V TSOT-23 Fixed ±0.05 % Surface Mount Series - 20 V 4.998 V 5.003 V 6 220 ppm/V 250 ppm/V, 300 ppm/V 2.9 x 1.75 x 0.9mm
RS Stock No. 145-7446
Mfr. Part No.LT1431IS8#PBF
PHP181.399
Each (In a Tube of 100)
units
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt - 40 V - - 8 - - 5.004 x 3.988 x 1.498mm
RS Stock No. 162-8310
Mfr. Part No.REF5050AIDGKT
PHP148.292
Each (On a Reel of 250)
units
5V VSSOP Fixed ±0.05 % Surface Mount Series ±10mA 18 V - - 8 1 ppm/V 50 ppm/mA 3.1 x 3.1 x 0.95mm
RS Stock No. 106-7045
Mfr. Part No.ADR421ARZ
PHP295.542
Each (In a Tube of 98)
units
2.5V SOIC Fixed ±0.13 % Surface Mount Series 10mA 18 V 2.497 V 2.503 V 8 35 ppm/V 70 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 651-3417
Mfr. Part No.LM4140ACM-1.0/NOPB
PHP240.33
Each
units
1.024V SOIC Fixed ±0.1 % Surface Mount Series 8mA 5.6 V - - 8 50 ppm/V 5 ppm/mA 4.9 x 3.9 x 1.45mm
RS Stock No. 523-6535
Mfr. Part No.REF03GPZ
PHP216.83
Each
units
2.5V PDIP Fixed ±0.6 % Through Hole Series 10mA 40 V 2.495 V 2.515 V 8 50 ppm/V 100 ppm/mA 9.27 x 7.24 x 3.43mm
RS Stock No. 823-0127
Mfr. Part No.LT1431IS8#PBF
PHP276.40
Each (In a Pack of 2)
units
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt - 40 V - - 8 - - 5.004 x 3.988 x 1.498mm
RS Stock No. 162-5820
Mfr. Part No.LM4040B25IDBZR
PHP59.50
Each (On a Reel of 3000)
units
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 1mm
RS Stock No. 534-3144
Mfr. Part No.LM4140ACM-2.5/NOPB
PHP292.43
Each
units
2.5V SOIC Fixed ±0.1 % Surface Mount Series 8mA 5.6 V - - 8 50 ppm/V 5 ppm/mA 4.9 x 3.9 x 1.45mm
RS Stock No. 284-214
Mfr. Part No.TLE2425CLP
PHP121.26
Each
units
2.5V TO-92 Fixed - Through Hole Series 80mA 40 V 2.47 V 2.53 V 3 - - 4.83 x 3.43 x 3.68mm
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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%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision 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%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision 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%.
Precision Fixed and Adjustable Voltage Reference ICs utilsing ...
Description:
Precision 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%.