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. 160-0694
Mfr. Part No.ADR4540ARZ
MYR19.35
Each (In a Tube of 98)
units
4.096V SOIC Fixed ±0.04 % Surface Mount Series 10mA 15 V - - 8 10 ppm/V 120 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 166-3616
Mfr. Part No.LM431CCZ
MYR0.241
Each (In a Bag of 10000)
units
2.5 - 36V TO-92 Adjustable ±0.5 % Through Hole Shunt 100 (Cathode)mA - 2.5 (Cathode) V 36 V 3 - - 5.2 x 4.19 x 5.33mm
RS Stock No. 166-1784
Mfr. Part No.LM336Z5
MYR0.384
Each (In a Bag of 10000)
units
5V TO-92 Programmable ±1.0 % Through Hole Shunt 15 (Reverse)mA - 4 V 6 V 3 - - 5.2 x 4.19 x 5.33mm
RS Stock No. 759-0459
Mfr. Part No.ADR421BRZ-REEL7
MYR42.17
Each
units
2.5V SOIC Fixed ±0.04 % Surface Mount Series 10mA 15 V 2.499 V 2.501 V 8 35 ppm/V 70 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 857-979
Mfr. Part No.TL431CD
MYR1.57
Each
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. 920-8969
Mfr. Part No.TL431ACZ
MYR0.389
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. 709-4831
Mfr. Part No.AD688ARWZ
MYR147.97
Each
units
10V SOIC W Fixed ±0.02 % Surface Mount Series 10mA 36 V -10 V 10 V 16 200 μV/V 50 μV/mA 10.5 x 7.6 x 2.35mm
RS Stock No. 922-2486
Mfr. Part No.LM4040D41IDBZR
MYR2.267
Each (On a Reel of 3000)
units
4.096V SOT-23 Fixed ±1.0 % Surface Mount Shunt 15mA - - - 3 - 9 mV 2.92 x 1.3 x 1mm
RS Stock No. 121-8776
Mfr. Part No.LM4040DIZ-5.0/NOPB
MYR0.953
Each (In a Box of 1800)
units
5V TO-92 Fixed ±1.0 % Through Hole Shunt 15mA - - - 3 - - 5.2 x 4.19 x 5.2mm
RS Stock No. 661-9534
Mfr. Part No.TL431BIDBZT
MYR3.56
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. 121-8297
Mfr. Part No.REF5020AID
MYR12.84
Each (In a Tube of 75)
units
2.048V SOIC Fixed ±0.05 % Surface Mount Series 10mA 18 V - - 8 1 ppm/V 50 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 538-7302
Mfr. Part No.ADR01AUJZ-REEL7
MYR11.04
Each
units
10V TSOT Fixed ±0.1 % Surface Mount Series 10mA 36 V 9.99 V 10.01 V 5 30 ppm/V 70 ppm/mA 2.9 x 1.6 x 0.9mm
RS Stock No. 160-0695
Mfr. Part No.ADR4540BRZ
MYR25.28
Each (In a Tube of 98)
units
4.096V SOIC Fixed ±0.02 % Surface Mount Series 10mA 15 V - - 8 10 ppm/V 120 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 165-7719
Mfr. Part No.TL431ACDT
MYR0.397
Each (On a Reel of 2500)
units
2.5 - 36V SOIC Adjustable ±1.0 % Surface Mount Shunt - - - - 8 - - -
RS Stock No. 877-9296
Mfr. Part No.REF01HZ
MYR69.08
Each
units
10V CERDIP Fixed ±0.5 % Through Hole Series 10mA 15 V 9.95 V 10.05 V 8 150 ppm/V 150 ppm/mA 10.29 x 7.87 x 3.56mm
RS Stock No. 709-1545
Mfr. Part No.AD1582BRTZ-REEL7
MYR9.24
Each (In a Pack of 5)
units
2.5V SOT-23 Fixed ±0.08 % Surface Mount Series 5mA 12 V 2.498 V 2.502 V 3 25 μV/V 3.5 mV/mA 2.9 x 1.3 x 1.02mm
RS Stock No. 759-2290
Mfr. Part No.AD588AQ
MYR180.09
Each
units
±10 V, ±5 V CERDIP Programmable ±0.06 % 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. 535-9559
Mfr. Part No.LM4040BIM3-2.5/NOPB
MYR5.386
Each (In a Pack of 5)
units
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 0.93mm
RS Stock No. 165-9764
Mfr. Part No.TL431BIDBZR,215
BrandNexperia
MYR0.429
Each (On a Reel of 3000)
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. 809-9225
Mfr. Part No.ADR512ARTZ-REEL7
MYR6.63
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
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