Electronic Design

Voltage Reference ICs

What is a voltage reference IC?
A voltage reference IC is an accurate, temperature-compensated voltage source that provides specific output voltage values, such as 1.225, 4.096, or 10.000 V.

What are the two basic topologies for voltage reference ICs?
Voltage reference ICs may be either shunt (twoterminal) or series (three-terminal) types.

How is a shunt reference IC configured?
The shunt reference IC employs an external series resSistor, RS, that sets the maximum current supplied to the load. Choose RS to accommodate the expected variations of the supply voltage, VS, load current, IL, and the reference's reverse voltage, VR, while maintaining an acceptable reverse current, IR, through the reference.

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