Voltage References

Voltage references are electronic devices that provide a fixed output voltage. They provide a constant voltage regardless of external factors. This includes the load on the device, temperature or fluctuations in the power supply. Learn more in our Complete Guide to Voltage References.

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.

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%.

Voltage reference ICs come in a standard semiconductor package, such as PDIP, SO, SOIC and SOT-23. The pin count may also be combined with the package type, for example SO-8.

Types of voltage references

  • Two-terminal shunt voltage reference
  • Three-terminal series voltage reference
  • Band-gap voltage reference
  • Low noise voltage reference
  • Micropower voltage reference

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 analogue-to-digital converters. They are also used in scientific applications and in medical equipment where voltage variations need to be tested regularly. Voltage references are also used in battery-powered devices.


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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庫存編號 121-8694
製造零件編號LM336Z-2.5/NOPB
TWD11.00
個 (以毎盒:1800)
單位
2.5V TO-92 Fixed ±4 % Through Hole Shunt 10mA - 2.39 V 2.59 V 3 - 10 mV 5.2 x 4.19 x 5.2mm
RS庫存編號 533-5799
製造零件編號LM336Z-2.5/NOPB
TWD28.00
單位
2.5V TO-92 Fixed ±4 % Through Hole Shunt 10mA - 2.39 V 2.59 V 3 - 10 mV 5.2 x 4.19 x 5.2mm
RS庫存編號 169-8955
製造零件編號TS431BCX RFG
TWD3.40
個 (在毎卷:3000)
單位
2.5 - 36V SOT-23 Adjustable 0.5% Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3.05 x 1.4 x 0.95mm
RS庫存編號 398-849
製造零件編號TS431BCX RFG
TWD12.20
/個 (每包:50個)
單位
2.5 - 36V SOT-23 Adjustable 0.5% Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3.05 x 1.4 x 0.95mm
RS庫存編號 797-4841
製造零件編號TL431FDT,215
BrandNexperia
TWD11.90
/個 (每包:50個)
單位
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS庫存編號 165-9766
製造零件編號TL431FDT,215
BrandNexperia
TWD2.60
個 (在毎卷:3000)
單位
2.5 - 36V SOT-23 Adjustable ±2.0 % Surface Mount Shunt 100mA 37 V 2.495 V 36 V 3 - - 3 x 1.4 x 1mm
RS庫存編號 170-9003
製造零件編號AP431IAZTR-G1
TWD3.10
Each (On a Tape of 2000)
單位
2.5V TO-92 Adjustable ±0.5 % Through Hole Shunt 100mA 36 V 2.5 V 36 V 3 - - 4.8 x 3.8 x 4.7mm
RS庫存編號 921-0546
製造零件編號AP431IAZTR-G1
TWD10.40
/個 (每包:50個)
單位
2.5V TO-92 Adjustable ±0.5 % Through Hole Shunt 100mA 36 V 2.5 V 36 V 3 - - 4.8 x 3.8 x 4.7mm
RS庫存編號 100-0659
製造零件編號ISL21080CIH325Z-TK
BrandIntersil
TWD57.80
Each (On a Tape of 5)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Series ±7mA 5.5 V - 2.5 V 3 350 μV/V 350 μV/mA 2.92 x 1.3 x 0.95mm
RS庫存編號 146-2383
製造零件編號ISL21080CIH325Z-TK
BrandIntersil
TWD34.40
個 (在毎卷:1000)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Series ±7mA 5.5 V - 2.5 V 3 350 μV/V 350 μV/mA 2.92 x 1.3 x 0.95mm
RS庫存編號 162-5904
製造零件編號TL431CLPM
TWD4.00
個 (在毎卷:2000)
單位
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS庫存編號 661-9824
製造零件編號TL431CLPM
TWD13.00
/個 (每包:10個)
單位
2.5 - 36V TO-92 Adjustable ±2.0 % Through Hole Shunt 100mA 37 V 2.5 V 36 V 3 - - 4.83 x 3.43 x 3.68mm
RS庫存編號 412-642
製造零件編號AD587JRZ
TWD312.00
單位
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庫存編號 162-4379
製造零件編號TLE2426ILP
TWD43.40
個 (以毎袋:1000)
單位
- TO-92 Adjustable - Through Hole Series 20mA 40 V 1.98 V 20.2 V 3 - - 4.83 x 3.43 x 3.68mm
RS庫存編號 461-9412
製造零件編號REF02BU
TWD237.00
單位
5V SOIC Fixed ±0.2 % Surface Mount Series - 40 V 4.99 V 5.01 V 8 0.01 %/V 0.008 %/mA 4.9 x 3.91 x 1.58mm
RS庫存編號 526-773
製造零件編號TLE2426ILP
TWD95.00
/個 (每包:5個)
單位
- TO-92 Adjustable - Through Hole Series 20mA 40 V 1.98 V 20.2 V 3 - - 4.83 x 3.43 x 3.68mm
RS庫存編號 166-2430
製造零件編號KA431AZTA
TWD2.40
Each (On a Tape of 2000)
單位
2.5 - 36V TO-92 Programmable ±1.0 % Through Hole Shunt 100mA - 2.5 V 36 V 3 - - 4.58 x 3.86 x 4.58mm
RS庫存編號 739-0300
製造零件編號KA431AZTA
TWD9.30
/個 (每包:10個)
單位
2.5 - 36V TO-92 Programmable ±1.0 % Through Hole Shunt 100mA - 2.5 V 36 V 3 - - 4.58 x 3.86 x 4.58mm
RS庫存編號 779-8962
製造零件編號LT1021DCS8-10#PBF
TWD265.00
單位
10V SOIC Fixed ±1.0 % Surface Mount Series 10mA 40 V 9.95 V 10.05 V 8 6 ppm/V 40 ppm/mA 5.004 x 3.988 x 1.498mm
RS庫存編號 914-0289
製造零件編號ADR5041ARTZ-REEL7
TWD28.50
/個 (每包:10個)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt - - - 2.5 V 3 - - 3.04 x 1.4 x 1.02mm