Current and Voltage References

Apinunt Thanachayanont

Sensitivity and temperature coefficient

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Temperature dependence

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Simple current source

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Widlar current source

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Threshold referenced current source

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Bootstrapped current source

� Very good power supply independent!

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Constant Gm biasing

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Bootstrapped current sources

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Also known as PTAT current source

Bandgap reference

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Bandgap reference

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Bandgap reference

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Bandgap reference voltage vs. Temp.

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Bandgap reference

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Bandgap reference

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Bandgap reference

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