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. 158-5251
Mfr. Part No.AD586BRZ
PHP627.953
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. 166-2589
Mfr. Part No.LM336Z25
PHP4.62
Each (In a Bag of 10000)
units
2.5V TO-92 Programmable ±1.0 % Through Hole Shunt 15 (Reverse)mA - - - 3 - - 5.2 x 4.19 x 5.33mm
RS Stock No. 111-1141
Mfr. Part No.REF195GPZ
PHP161.126
Each (In a Tube of 50)
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. 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. 165-4708
Mfr. Part No.MCP1501-10E/SN
BrandMicrochip
PHP31.072
Each (In a Tube of 100)
units
1.02V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 1.023 V 1.025 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 922-2228
Mfr. Part No.LMV431ACM5/NOPB
PHP13.678
Each (On a Reel of 1000)
units
1.24 - 30V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 15mA - 1.221 V 1.259 V 5 - - 2.92 x 1.6 x 1.02mm
RS Stock No. 106-6384
Mfr. Part No.AD581JH
PHP1,714.091
Each (In a Tube of 100)
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. 797-4829
Mfr. Part No.TL431AQDBZR,215
BrandNexperia
PHP12.23
Each (On a Tape of 50)
units
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS Stock No. 463-498
Mfr. Part No.LM385Z-2.5G
PHP25.576
Each (In a Pack of 10)
units
2.5V TO-92 Fixed ±3 % Through Hole Shunt 20mA - 2.425 V 2.575 V 3 - 20 mV 5.2 x 4.19 x 5.33mm
RS Stock No. 540-4160
Mfr. Part No.MAX6250ACSA+
PHP417.90
Each
units
5V SOIC Fixed ±0.02 % Surface Mount Series 15mA 40 V 4.999 V 5.001 V 8 18 ppm/V 1 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 534-3144
Mfr. Part No.LM4140ACM-2.5/NOPB
PHP250.81
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. 159-8076
Mfr. Part No.AD588BQ
PHP9,439.438
Each (In a Tube of 25)
units
±10 V, ±5 V 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. 111-5568
Mfr. Part No.MCP1501-10E/SN
BrandMicrochip
PHP35.992
Each (In a Pack of 10)
units
1.02V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 1.023 V 1.025 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 168-4286
Mfr. Part No.LM4040B25IDBZT
PHP75.483
Each (On a Reel of 250)
units
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 80µA - - 2.5 V 3 - - 3.04 x 1.4 x 1.02mm
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. 100-0661
Mfr. Part No.ISL21080DIH309Z-TK
BrandIntersil
PHP71.676
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. 921-6967
Mfr. Part No.LM431CIM3/NOPB
PHP21.628
Each (On a Reel of 1000)
units
2.5 - 36V SOT-23 Adjustable ±0.5 % Surface Mount Shunt 100mA - 2.485 V 2.51 V 3 - - 2.92 x 1.3 x 0.93mm
RS Stock No. 165-6500
Mfr. Part No.TS3431CILT
PHP9.924
Each (On a Reel of 3000)
units
1.24 - 24V SOT-23 Adjustable ±0.25 % Surface Mount Shunt 100mA - 1.24 V 24 V 3 - - 3.04 x 1.4 x 1.02mm
RS Stock No. 155-119
Mfr. Part No.ZRC250F02TA
PHP44.732
Each (In a Pack of 5)
units
2.5V SOT-23 Fixed ±2.0 % Surface Mount Shunt 5mA - 2.45 V 2.55 V 3 - - 3.05 x 1.4 x 1mm
RS Stock No. 757-7046
Mfr. Part No.MAX6126AASA50+
PHP306.60
Each
units
5V SOIC Fixed ±0.02 % Surface Mount Series 0mA 12.6 V - 5 V 8 80 μV/V 50 μV/mA 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%.