Invention Grant
- Patent Title: Voltage supply circuit and microphone unit
- Patent Title (中): 电源电路和麦克风单元
-
Application No.: US11325346Application Date: 2006-01-05
-
Publication No.: US07864970B2Publication Date: 2011-01-04
- Inventor: Fumiyuki Niwa , Masayuki Ida , Hiroshige Kinoshita
- Applicant: Fumiyuki Niwa , Masayuki Ida , Hiroshige Kinoshita
- Applicant Address: JP Kanagawa
- Assignee: Renesas Electronics Corporation
- Current Assignee: Renesas Electronics Corporation
- Current Assignee Address: JP Kanagawa
- Agency: Sughrue Mion, PLLC
- Priority: JP2005-001381 20050106
- Main IPC: H04R3/00
- IPC: H04R3/00
Abstract:
A voltage supply circuit includes a booster outputting a voltage boosted from a power supply voltage and an amplifier operating with a voltage output from the booster as a power supply and supplying a bias voltage to a sensor. An output voltage value of the booster that generates a power supply voltage of the amplifier is set according to a signal for specifying a sensitivity of the sensor.
Public/Granted literature
- US20060147062A1 Voltage supply circuit and microphone unit Public/Granted day:2006-07-06
Information query
