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庫存編號 162-5819
製造零件編號LM385DRG4-2-5
HK$2.217
個 (在毎卷:2500)
單位
2.5V SOIC Fixed ±3 % Surface Mount Shunt 20mA - 2.425 V 2.575 V 8 - 20 mV 4.9 x 3.91 x 1.58mm
RS庫存編號 809-5374
製造零件編號TL431AILP
HK$3.09
/個 (每包:5個)
單位
2.5 - 36V TO-92 Adjustable ±1.0 % Through Hole Shunt 100mA - - 36 V 3 - - 5.21 x 4.19 x 5.34mm
RS庫存編號 412-349
製造零件編號ADR02ARZ
HK$20.404
/個 (每包:5個)
單位
5V SOIC Fixed ±0.1 % Surface Mount Series 10mA 36 V 4.995 V 5.005 V 8 30 ppm/V 70 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 651-3293
製造零件編號LM4132DMF-4.1/NOPB
HK$18.06
單位
4.096V SOT-23 Fixed ±0.4 % Surface Mount Series 20mA 6 V - - 5 100 ppm/V 25 ppm/mA 2.92 x 1.6 x 1.02mm
RS庫存編號 809-5217
製造零件編號LM4040B25IDBZT
HK$12.176
Each (On a Tape of 20)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 80µA - - 2.5 V 3 - - 3.04 x 1.4 x 1.02mm
RS庫存編號 389-249
製造零件編號REF2925AIDBZT
HK$10.774
/個 (每包:5個)
單位
2.5V SOT-23 Fixed ±2.0 % Surface Mount Series 25mA 7 V 2.45 V 2.55 V 3 325 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS庫存編號 620-0802
製造零件編號REF02AU
HK$41.158
/個 (每包:5個)
單位
5V SOIC Fixed ±0.2 % Surface Mount Series - 40 V 4.985 V 5.015 V 8 0.01 %/V 0.01 %/mA 4.9 x 3.91 x 1.58mm
RS庫存編號 169-8210
製造零件編號NJM431M
HK$2.634
毎管:100 個
單位
2.5 - 36V DMP Adjustable ±2.2 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - 0.1 % 5 x 5 x 1.6mm
RS庫存編號 121-9495
製造零件編號TL431ASA-7
HK$0.616
個 (在毎卷:3000)
單位
2.5 - 36V SOT-23 Adjustable ±1.0 % Surface Mount Shunt 100mA 40 V 2.5 V 36 V 3 - - 3 x 1.4 x 1mm
RS庫存編號 168-4199
製造零件編號ADR02ARZ-REEL7
HK$15.954
個 (在毎卷:1000)
單位
5V SOIC Fixed ±0.1 % Surface Mount Series 10mA 36 V 4.995 V 5.005 V 8 40 ppm/V 80 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 661-9423
製造零件編號LT1009CDR
HK$8.876
/個 (每包:5個)
單位
2.5V SOIC Fixed ±0.2 % Surface Mount Shunt 10mA - 2.485 V 2.515 V 8 - 10 mV 4.9 x 3.91 x 1.58mm
RS庫存編號 535-9559
製造零件編號LM4040BIM3-2.5/NOPB
HK$8.848
/個 (每包:5個)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 0.93mm
RS庫存編號 774-3486
製造零件編號LM385BZ-2.5G
HK$4.424
/個 (每包:5個)
單位
2.5V TO-92 Fixed ±1.5 % Through Hole Shunt 20mA - - 2.5 V 3 - - 5.2 x 4.19 x 5.33mm
RS庫存編號 158-5253
製造零件編號AD586MNZ
HK$110.706
毎管:50 個
單位
5V PDIP Fixed ±0.04 % Through Hole Series 10mA 36 V 4.998 V 5.002 V 8 100 μV/V 400 μV/mA 9.27 x 7.24 x 3.43mm
RS庫存編號 463-498
製造零件編號LM385Z-2.5G
HK$3.742
/個 (每包:10個)
單位
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庫存編號 162-5891
製造零件編號TL1431CDR
HK$1.267
個 (在毎卷:2500)
單位
2.5V SOIC Adjustable ±0.4 % Surface Mount Shunt 100mA 37 V 2.5 V 36 V 8 - - 4.9 x 3.91 x 1.58mm
RS庫存編號 162-5820
製造零件編號LM4040B25IDBZR
HK$9.506
個 (在毎卷:3000)
單位
2.5V SOT-23 Fixed ±0.2 % Surface Mount Shunt 15mA - - - 3 - 6 mV 2.92 x 1.3 x 1mm
RS庫存編號 404-326
製造零件編號REF5040AID
HK$34.68
單位
4.096V SOIC Fixed ±0.05 % Surface Mount Series 10mA 18 V - - 8 1 ppm/V 50 ppm/mA 5 x 4 x 1.5mm
RS庫存編號 178-8958
製造零件編號REF2925AIDBZT
HK$10.127
個 (在毎卷:3000)
單位
2.5V SOT-23 Fixed ±2.0 % Surface Mount Series 25mA 7 V 2.45 V 2.55 V 3 325 μV/V 100 μV/mA 2.92 x 1.3 x 1mm
RS庫存編號 158-0224
製造零件編號ADR03BRZ
HK$33.662
毎管:98 個
單位
2.5V SOIC Fixed ±0.1 % Surface Mount Series 10mA 36 V 2.498 V 2.503 V 8 30 ppm/V 70 ppm/mA 5 x 4 x 1.5mm