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. 145-0736
Mfr. Part No.LM399H#PBF
R 206.907
Each (In a Tube of 20)
units
6.95V TO-46 Fixed ±5 % Through Hole Shunt 10mA - - 6.95 V 4 - - 10.389 (Dia.) x 5.943mm
RS stock no. 779-8903
Mfr. Part No.LM399H#PBF
R 213.15
Each
units
6.95V TO-46 Fixed ±5 % Through Hole Shunt 10mA - - 6.95 V 4 - - 10.389 (Dia.) x 5.943mm
RS stock no. 912-6426
Mfr. Part No.REF191GSZ
R 49.993
Each (In a Tube of 98)
units
2.048V SOIC Fixed ±0.1 % Surface Mount Series 30mA 18 V 2.038 V 2.058 V 8 8 ppm/V 15 ppm/mA 5 x 4 x 1.5mm
RS stock no. 697-8000
Mfr. Part No.REF191GSZ
R 60.74
Each
units
2.048V SOIC Fixed ±0.1 % Surface Mount Series 30mA 18 V 2.038 V 2.058 V 8 8 ppm/V 15 ppm/mA 5 x 4 x 1.5mm
RS stock no. 111-1150
Mfr. Part No.REF193GSZ
R 52.421
Each (In a Tube of 98)
units
3V SOIC Fixed ±0.07 % Surface Mount Series 30mA 18 V 2.99 V 3 V 8 8 ppm/V 15 ppm/mA 5 x 4 x 1.5mm
RS stock no. 523-6125
Mfr. Part No.REF193GSZ
R 63.07
Each
units
3V SOIC Fixed ±0.07 % Surface Mount Series 30mA 18 V 2.99 V 3 V 8 8 ppm/V 15 ppm/mA 5 x 4 x 1.5mm
RS stock no. 145-6171
Mfr. Part No.LT1021CCN8-10#PBF
R 94.756
Each (In a Tube of 50)
units
10V PDIP Fixed ±0.05 % Through Hole Series/Shunt 10mA 40 V 9.995 V 10.005 V 8 4 ppm/V 100 ppm/mA 10.16 x 6.48 x 3.3mm
RS stock no. 106-6383
Mfr. Part No.AD580JH
R 154.208
Each (In a Tube of 100)
units
2.5V TO-52 Fixed ±0.4 % Through Hole Series - 40 V - - 3 6 mV 10 mV 5.84 x 5.84 x 3.81mm
RS stock no. 160-0695
Mfr. Part No.ADR4540BRZ
R 104.375
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. 545-5562
Mfr. Part No.LT1021CCN8-10#PBF
R 150.95
Each
units
10V PDIP Fixed ±0.05 % Through Hole Series/Shunt 10mA 40 V 9.995 V 10.005 V 8 4 ppm/V 100 ppm/mA 10.16 x 6.48 x 3.3mm
RS stock no. 411-573
Mfr. Part No.AD580JH
R 211.89
Each
units
2.5V TO-52 Fixed ±0.4 % Through Hole Series - 40 V - - 3 6 mV 10 mV 5.84 x 5.84 x 3.81mm
RS stock no. 802-3907
Mfr. Part No.ADR4540BRZ
R 131.07
Each
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. 522-8382
Mfr. Part No.REF02CSZ
R 56.22
Each
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. 106-7055
Mfr. Part No.REF02CSZ
R 46.681
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. 111-1166
Mfr. Part No.REF195GSZ
R 43.056
Each (In a Tube of 98)
units
5V SOIC Fixed ±0.04 % Surface Mount Series 30mA 18 V 4.99 V 5.01 V 8 8 ppm/V 8 ppm/mA 5 x 4 x 1.5mm
RS stock no. 523-7976
Mfr. Part No.AD780ARZ
R 139.539
Each (In a Tube of 98)
units
2.5 V, 3 V SOIC Programmable ±0.2 % Surface Mount Series/Shunt 10mA 36 V 2.495 V, 2.995 V 2 V, 3 V 8 10 μV/V 75 μV/mA 5 x 4 x 1.5mm
RS stock no. 154-7682
Mfr. Part No.LT1027BCN8-5#PBF
R 121.059
Each (In a Tube of 50)
units
5V PDIP Fixed ±0.05 % Through Hole Series 15mA 40 V 4.9975 V 5.0025 V 8 25 ppm/V 8 ppm/mA 10.16 x 6.477 x 3.302mm
RS stock no. 523-7011
Mfr. Part No.REF195GSZ
R 59.98
Each
units
5V SOIC Fixed ±0.04 % Surface Mount Series 30mA 18 V 4.99 V 5.01 V 8 8 ppm/V 8 ppm/mA 5 x 4 x 1.5mm
RS stock no. 111-2240
Mfr. Part No.ADR01BRZ
R 74.396
Each (In a Tube of 98)
units
10V SOIC Fixed ±0.05 % Surface Mount Series 10mA 36 V 9.995 V 10.005 V 8 30 ppm/V 70 ppm/mA 5 x 4 x 1.5mm
RS stock no. 779-8971
Mfr. Part No.LT1027BCN8-5#PBF
R 122.64
Each
units
5V PDIP Fixed ±0.05 % Through Hole Series 15mA 40 V 4.9975 V 5.0025 V 8 25 ppm/V 8 ppm/mA 10.16 x 6.477 x 3.302mm