Trimming circuit and trimming method
AssigneeFuji Electric Co., Ltd.
InventorMorio IWAMIZU
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Abstract
A trimming circuit configured to output a voltage according to the presence or absence of disconnection of a fuse resistor is provided, including a fuse resistor formed by a polysilicon layer arranged on a semiconductor substrate via an insulating film, a pad for trimming connected to one end of the fuse resistor, an output terminal electrically connected to a connection point between the fuse resistor and the pad, and configured to output a voltage according to the presence or absence of disconnection of the fuse resistor, and a diode formed on the semiconductor substrate, having one end connected to the other end of the fuse resistor.
Claims20
A trimming circuit comprising a body portion configured to output a voltage according to the presence or absence of disconnection of a fuse resistor, wherein the body portion includes:
- a fuse resistor formed by a polysilicon layer arranged on a semiconductor substrate via an insulating film;
- a pad for trimming connected to one end of the fuse resistor;
- an output terminal electrically connected to a connection point between the fuse resistor and the pad, and configured to output a voltage according to the presence or absence of disconnection of the fuse resistor;
- and
- a diode formed on the semiconductor substrate, having one end connected to another end of the fuse resistor.
Dependencies are inferred from the claim text.