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US 2026/0210771 A1Published application
Measurement circuit and semiconductor integrated circuit
AssigneeSocionext Inc.
InventorsKenta ARUGA, Hiroyuki TOMURA, Hiroshi MORI
Life of this patent
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Abstract
A measurement circuit includes a first switch circuit configured to switch a connection between an input side node and an output side node in accordance with a plurality of measurement modes for measuring a plurality of types of physical quantities.
Claims20
A measurement circuit comprising:
- a first field effect transistor and a first bipolar transistor that are coupled between a first power supply line and a second power supply line via a first node;
- a second field effect transistor and a second bipolar transistor that are coupled between the first power supply line and the second power supply line via a second node;
- an analog-to-digital conversion circuit configured to:
- convert an analog voltage indicating a difference between a voltage at a first differential input node and a voltage at a second differential input node into a digital output value, by using a voltage at the first node as a reference voltage, and
- output the digital output value;
- and
- a first switch circuit provided between:
- an input side node including a voltage measurement node to which a voltage to be measured is supplied, the first node, and the second node, and
- an output side node including the first differential input node and the second differential input node, the first switch circuit being configured to switch a connection between the input side node and the output side node in accordance with a plurality of measurement modes for measuring a plurality of types of physical quantities, the plurality of measurement modes including a first measurement mode and a second measurement mode.
6 more elements
Dependencies are inferred from the claim text.