Imec Vzw

Chutham Sawigun

En-Chi Chang

A voltage reference circuit comprises: a first transistor; a second transistor, wherein the first transistor and the second transistor are arranged in a stacked connection between a terminal connected to ground and a terminal connected to a supply voltage, wherein a reference voltage is output at an output node between the first transistor and the second transistor; and a regulating transistor, wherein the regulating transistor is connected between the supply voltage and the first transistor in a stacked connection with the second transistor, wherein a bulk terminal of the regulating transistor is connected to the output node for compensating changes in the reference voltage at the output node to maintain a stable reference voltage level.

Voltage reference circuit and a power management unit

A reference circuit for providing voltage reference and current reference comprises: operational amplifier comprising first transistor, second transistor and current mirror being configured to force a same drain current through first and second transistor, wherein first and second transistor control voltage reference at first node of reference circuit; and reference output comprising reference resistor connected between ground and first node and reference transistor, whereby reference circuit is configured to provide voltage reference at first node and current reference through reference resistor and reference transistor.

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Leuven, Belgium

Chutham Sawigun