Invention Grant
- Patent Title: Semiconductor device and control method for the same
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Application No.: US17978266Application Date: 2022-11-01
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Publication No.: US12126352B2Publication Date: 2024-10-22
- Inventor: Wataru Saito , Fukashi Morishita
- Applicant: Renesas Electronics Corporation
- Applicant Address: JP Tokyo
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Tokyo
- Agency: SCULLY, SCOTT, MURPHY & PRESSER, P.C.
- Priority: JP 21178797 2021.11.01
- Main IPC: H03M1/10
- IPC: H03M1/10 ; H03M1/68 ; H04N23/45 ; H04N25/69 ; H04N25/78

Abstract:
A semiconductor device includes a digital-analog converter provided with a plurality of current cells, and a test circuit electrically connected to the digital-analog converter to test the digital-analog converter. The test circuit includes: a charge information holding circuit that holds, as differential charge information, a difference value between a first charge according to a first current and a second charge according to a second current by at least one or more current cells among the plurality of current cells; a reference voltage generation circuit that generates a reference voltage to be comparative object; and a comparison circuit that compares a determination voltage according to the differential charge information and the reference voltage to output a comparison result.
Public/Granted literature
- US20230138391A1 SEMICONDUCTOR DEVICE AND CONTROL METHOD FOR THE SAME Public/Granted day:2023-05-04
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