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. 197-7488
Mfr. Part No.REF3033AIDBZT
€0.575
Each (On a Reel of 250)
units
3.3V SOT-23 Precision 0.2% Surface Mount Series - - - - 3 - - -
RS Stock No. 527-306
Mfr. Part No.TL431ACDBZT
€0.209
Each (In a Pack of 25)
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. 190-4425
Mfr. Part No.MAX6018AEUR16+T
€1.624
Each (On a Reel of 2500)
units
1.6V SOT-23 Precision ±0.2% Surface Mount Shunt - - 1.59 V 1.603 V 3 250 μV 700 μV/mA 3.04 x 1.4 x 1.02mm
RS Stock No. 523-8519
Mfr. Part No.ADR291GRZ
€5.06
Each
units
2.5V SOIC Fixed ±0.24 % Surface Mount Series 5mA 18 V 2.494 V 2.506 V 8 125 ppm/V 125 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 111-5570
Mfr. Part No.MCP1501-18E/SN
BrandMicrochip
€0.66
Each (In a Pack of 10)
units
1.8V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 1.79 V 1.8 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 778-1517
Mfr. Part No.MAX6106EUR+T
€0.954
Each (In a Pack of 5)
units
2.048V SOT-23 Fixed ±0.4 % Surface Mount Series 5mA 12.6 V 2.04 V 2.056 V 3 200 μV/V 0.9 mV/mA, 4 mV/mA 3.04 x 1.4 x 1.02mm
RS Stock No. 795-8650
Mfr. Part No.TL1431AIDT
€0.29
Each (On a Tape of 10)
units
2.5 - 36V SOIC Adjustable ±0.25 % Surface Mount Shunt 100mA - 2.5 V 36 V 8 - - 5 x 4 x 1.5mm
RS Stock No. 165-4706
Mfr. Part No.MCP1501-40E/SN
BrandMicrochip
€0.50
Each (In a Tube of 100)
units
4.096V SOIC Fixed ±0.08 % Surface Mount Series 30mA 5.5 V 4.092 V 4.099 V 8 50 ppm/V 40 (Sink) ppm/mA, 70 (Source) ppm/mA 4.9 x 3.9 x 1.5mm
RS Stock No. 190-0114
Mfr. Part No.MAX6241ACSA+
€7.15
Each (In a Pack of 2)
units
4.096V SOIC Fixed ±0.02 % Surface Mount Series ±15mA 36 V 4.095 V 4.097 V 8 30 ppm/V 6 ppm/mA 5 x 4 x 1.5mm
RS Stock No. 778-1513
Mfr. Part No.MAX6105EUR+T
€0.936
Each (In a Pack of 5)
units
5V SOT-23 Fixed ±0.4 % Surface Mount Series 5mA 12.6 V 4.98 V 5.02 V 3 550 μV/V 0.9 mV/mA, 10 mV/mA 3.04 x 1.4 x 1.02mm
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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%.
For low power, low current applications, the shunt ...
Description:
For low power, low current applications, the shunt regulators from Fairchild Semiconductor feature adjustable/programmable output voltages with superb thermal stability The shunt regulators provide low dynamic output impedance and fast turn-on response while operating over the industrial temperature range.
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%.