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. 412-642
Mfr. Part No.AD587JRZ
PHP349.27
Each
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. 497-1912
Mfr. Part No.ADR425BRZ
PHP536.84
Each
units
5V SOIC Fixed ±0.04 % Surface Mount Series 10mA 18 V 4.998 V 5.002 V 8 35 ppm/V 70 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 661-9534
Mfr. Part No.TL431BIDBZT
PHP37.11
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. 162-5897
Mfr. Part No.TL431AIDBZR
PHP4.81
Each (On a Reel of 3000)
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. 913-0712
Mfr. Part No.REF195ESZ
PHP219.45
Each (In a Tube of 98)
units
5V SOIC Fixed ±0.04 % Surface Mount Series 30mA 18 V 4.998 V 5.002 V 8 4 ppm/V 4 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 168-4849
Mfr. Part No.TL431ACDR
PHP3.72
Each (On a Reel of 2500)
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. 922-2482
Mfr. Part No.LM4040D25IDBZT
PHP27.838
Each (On a Reel of 250)
units
2.5V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - 8 mV 2.92 x 1.3 x 1mm
RS Stock No. 534-2854
Mfr. Part No.LM385Z/NOPB
PHP35.10
Each
units
1.24 - 5.3V TO-92 Adjustable ±2.0 % Through Hole Shunt 20mA - 1.24 V 5.3 V 3 - 15 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 111-1104
Mfr. Part No.REF02CPZ
PHP154.942
Each (In a Tube of 50)
units
5V PDIP Fixed ±1.0 % Through Hole Series 8mA 40 V 4.95 V 5.05 V 8 150 ppm/V 150 ppm/mA 9.27 x 7.24 x 3.43mm
RS Stock No. 912-8740
Mfr. Part No.AD586LRZ
PHP528.289
Each (In a Tube of 98)
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. 535-9751
Mfr. Part No.LM431BIM3/NOPB
PHP31.568
Each (In a Pack of 5)
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 0.93mm
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. 526-313
Mfr. Part No.TL431ACDR
PHP8.121
Each (In a Pack of 25)
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. 168-4858
Mfr. Part No.TL431AIDBZT
PHP16.981
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. 121-8848
Mfr. Part No.LM431BIM3/NOPB
PHP12.979
Each (On a Reel of 1000)
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 0.93mm
RS Stock No. 169-5610
Mfr. Part No.LM4040D25IDBZR
PHP13.813
Each (On a Reel of 3000)
units
2.5V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - 8 mV 2.92 x 1.3 x 1mm
RS Stock No. 162-4725
Mfr. Part No.LM385Z/NOPB
PHP18.497
Each (In a Box of 1800)
units
1.24 - 5.3V TO-92 Adjustable ±2.0 % Through Hole Shunt 20mA - 1.24 V 5.3 V 3 - 15 mV 5.2 x 4.19 x 5.2mm
RS Stock No. 661-9354
Mfr. Part No.LM4040D25IDBZT
PHP34.08
Each (In a Pack of 5)
units
2.5V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - 8 mV 2.92 x 1.3 x 1mm
RS Stock No. 797-4838
Mfr. Part No.TL431BQDBZR,215
BrandNexperia
PHP18.388
Each (In a Pack of 25)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 714-7822
Mfr. Part No.TL431AIZT
PHP14.23
Each (In a Pack of 20)
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
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%.