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. 162-4864
Mfr. Part No.TL431ACD
$0.556
Each (In a Tube of 75)
units
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.91 x 1.58mm
RS Stock No. 160-2655
Mfr. Part No.ADR512ARTZ-REEL7
$1.682
Each (On a Reel of 3000)
units
1.2V SOT-23 Fixed ±0.3 % Surface Mount Shunt - - 1.1965 V 1.2035 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 162-5920
Mfr. Part No.TLE2426IP
$3.30
Each (In a Tube of 50)
units
- PDIP Adjustable - Through Hole Series 20mA 40 V 1.98 V 20.2 V 8 - - 9.81 x 6.35 x 4.57mm
RS Stock No. 121-8710
Mfr. Part No.LM4040AIM3-2.5/NOPB
$1.474
Each (On a Reel of 1000)
units
2.5V SOT-23 Fixed ±0.1 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 0.93mm
RS Stock No. 106-7055
Mfr. Part No.REF02CSZ
$3.982
Each (In a Tube of 98)
units
5V SOIC Fixed ±1.0 % Surface Mount Series 8mA 40 V 4.95 V 5.05 V 8 150 ppm/V 150 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 822-5907
Mfr. Part No.LT1634BCS8-1.25#PBF
$9.57
Each (In a Pack of 2)
units
1.25V SOIC Fixed ±0.05 % Surface Mount Shunt 1µA - 1.25 V 5 V 8 - - 5.004 x 3.98 x 1.498mm
RS Stock No. 535-9644
Mfr. Part No.LM4040DIM3-4.1/NOPB
$1.132
Each (In a Pack of 5)
units
4.1V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - 9 mV 2.92 x 1.3 x 0.93mm
RS Stock No. 145-6054
Mfr. Part No.LT1004ID-2-5
$1.65
Each (In a Tube of 75)
units
2.5V SOIC Fixed ±0.8 % Surface Mount Shunt - - - - 8 - 20 mV 5 x 4 x 1.5mm
RS Stock No. 738-5333
Mfr. Part No.TL431ASA-7
$0.535
Each (In a Pack of 50)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 40 V 2.5 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 920-8969
Mfr. Part No.TL431ACZ
$0.16
Each (In a Bag of 2500)
units
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.7 x 3.7 x 4.4mm
RS Stock No. 533-8445
Mfr. Part No.LM4040AIM3-2.5/NOPB
$3.19
Each (In a Pack of 5)
units
2.5V SOT-23 Fixed ±0.1 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 0.93mm
RS Stock No. 714-1114
Mfr. Part No.TL431CDT
$0.543
Each (In a Pack of 20)
units
2.5 - 36V SOIC Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.9 x 1.25mm
RS Stock No. 168-4859
Mfr. Part No.TL431ACDBZT
$0.652
Each (On a Reel of 250)
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. 145-1010
Mfr. Part No.TL431ACLP
$0.242
Each (In a Bag of 1000)
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. 661-9754
Mfr. Part No.TLE2426CP
$3.95
Each (In a Pack of 5)
units
- PDIP Adjustable - Through Hole Series 20mA 40 V 1.98 V 20.2 V 8 - - 9.81 x 6.35 x 4.57mm
RS Stock No. 461-9412
Mfr. Part No.REF02BU
$10.97
Each
units
5V SOIC Fixed ±0.2 % Surface Mount Series - 40 V 4.99 V 5.01 V 8 0.01 %/V 0.008 %/mA 4.9 x 3.91 x 1.58mm
RS Stock No. 526-307
Mfr. Part No.TL431CDR
$0.505
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. 809-9225
Mfr. Part No.ADR512ARTZ-REEL7
$2.728
Each (In a Pack of 5)
units
1.2V SOT-23 Fixed ±0.3 % Surface Mount Shunt - - 1.1965 V 1.2035 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 179-1665
Mfr. Part No.TLE2426CD
$5.111
Each (In a Tube of 75)
units
- SOIC Adjustable - Surface Mount Series 20mA 40 V 1.98 V 20.2 V 8 - - 4.9 x 3.91 x 1.58mm
RS Stock No. 805-1387
Mfr. Part No.LM385BD-2.5G
$0.99
Each (In a Pack of 25)
units
2.5V SOIC Fixed ±1.5 % Surface Mount Shunt - - - - 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%.