Invention Grant
- Patent Title: Driver circuit and operational amplifier circuit used therein
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Application No.: US15854046Application Date: 2017-12-26
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Publication No.: US10320348B2Publication Date: 2019-06-11
- Inventor: De-Shiou Tseng , Wei-Ta Chiu
- Applicant: NOVATEK MICROELECTRONICS CORP.
- Applicant Address: TW Hsinchu
- Assignee: NOVATEK MICROELECTRONICS CORP.
- Current Assignee: NOVATEK MICROELECTRONICS CORP.
- Current Assignee Address: TW Hsinchu
- Agency: McClure, Qualey & Rodack, LLP
- Main IPC: H03F3/45
- IPC: H03F3/45 ; G05F1/56 ; H03K17/22 ; H03F1/02 ; H03F3/30

Abstract:
A driver circuit including a first op-amp, a second op-amp, and a power switching circuit is provided. The first op-amp includes a first input stage circuit for generating a first amplified signal and a first output stage circuit. The second op-amp includes a second input stage circuit for generating a second amplified signal and a second output stage circuit. The power switching circuit includes a first output terminal for outputting one of the first amplified signal and the second amplified signal and a second output terminal for outputting the other of the first amplified signal and the second amplified signal. The power switching circuit is configured to switch a first power supply for both the first input stage circuit and the second input stage circuit between a first supply voltage and a second supply voltage in response to the control signal.
Public/Granted literature
- US20180294785A1 DRIVER CIRCUIT AND OPERATIONAL AMPLIFIER CIRCUIT USED THEREIN Public/Granted day:2018-10-11
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