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. 661-9518
Mfr. Part No.TL431AIDBZR
PHP15.466
Each (In a Pack of 10)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 3 - - 2.92 x 1.3 x 1mm
RS Stock No. 527-984
Mfr. Part No.TL431AILPE3
PHP7.28
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. 709-5406
Mfr. Part No.AD586BRZ
PHP714.33
Each
units
5V SOIC Fixed ±0.05 % Surface Mount Series 10mA 36 V 4.998 V 5.003 V 8 100 μV/V 400 μV/mA 5 x 4 x 1.5mm
RS Stock No. 165-9252
Mfr. Part No.MAX6350ESA+
PHP909.019
Each (In a Tube of 100)
units
5V SOIC Fixed ±0.02 % Surface Mount Series 15mA 36 V 5 V 5 V 8 35 ppm/V 7 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 166-2430
Mfr. Part No.KA431AZTA
PHP3.10
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. 661-9470
Mfr. Part No.REF3320AIDBZT
PHP101.25
Each (In a Pack of 5)
units
2.048V SOT-23 Fixed ±0.15 % Surface Mount Series 5mA 7.5 V - - 3 50 ppm/V 50 ppm/mA 2.92 x 1.3 x 1mm
RS Stock No. 823-0127
Mfr. Part No.LT1431IS8#PBF
PHP204.33
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. 163-2402
Mfr. Part No.LM285Z-2.5G
PHP15.053
Each (In a Bag of 2000)
units
2.5V TO-92 Fixed ±1.5 % Through Hole Shunt 20mA - 2.462 V 2.538 V 3 - 10 mV 5.2 x 4.19 x 5.33mm
RS Stock No. 533-5799
Mfr. Part No.LM336Z-2.5/NOPB
PHP38.37
Each
units
2.5V TO-92 Fixed ±4 % Through Hole Shunt 10mA - 2.39 V 2.59 V 3 - 10 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 411-589
Mfr. Part No.AD581JH
PHP1,002.94
Each
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. 122-0333
Mfr. Part No.TLV431BFTA
PHP5.95
Each (On a Reel of 3000)
units
1.24 - 18V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 20mA 20 V 1.24 V 18 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 761-5933
Mfr. Part No.LM431ACZ/NOPB
PHP18.817
Each (In a Pack of 10)
units
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA - 2.44 V 2.55 V 3 - - 5.2 x 4.19 x 5.2mm
RS Stock No. 162-6748
Mfr. Part No.TL432AIDBVR
PHP6.432
Each (On a Reel of 3000)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA - - 36 V 5 - - 3.05 x 1.75 x 1.3mm
RS Stock No. 759-0446
Mfr. Part No.ADR02AKSZ-REEL7
PHP131.02
Each
units
5V SC-70 Fixed ±0.1 % Through Hole Series 10mA 36 V 4.995 V 5.005 V 5 40 ppm/V 80 ppm/mA 2.2 x 1.35 x 1mm
RS Stock No. 165-9677
Mfr. Part No.MAX6350CPA+
PHP603.109
Each (In a Tube of 50)
units
5V PDIP Fixed ±0.02 % Through Hole Series 0mA 36 V 4.999 V 5.001 V 8 10 ppm/V 15 ppm/mA 9.91 x 7.87 x 4.45mm
RS Stock No. 738-5361
Mfr. Part No.TLV431BFTA
PHP6.972
Each (In a Pack of 25)
units
1.24 - 18V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 20mA 20 V 1.24 V 18 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 463-246
Mfr. Part No.TL431CLPG
PHP11.478
Each (In a Pack of 50)
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. 159-7584
Mfr. Part No.ADR02AKSZ-REEL7
PHP96.578
Each (On a Reel of 3000)
units
5V SC-70 Fixed ±0.1 % Through Hole Series 10mA 36 V 4.995 V 5.005 V 5 40 ppm/V 80 ppm/mA 2.2 x 1.35 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. 122-2409
Mfr. Part No.ZR40402F25TA
PHP13.345
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
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%.