Invention Grant
- Patent Title: AD converter and data processing unit
- Patent Title (中): AD转换器和数据处理单元
-
Application No.: US12467502Application Date: 2009-05-18
-
Publication No.: US07830286B2Publication Date: 2010-11-09
- Inventor: Hideki Kabune , Nobuhiko Makino , Tomoharu Hayakawa , Hitoshi Ishikawa , Tatsuya Aizawa , Shigeo Uno , Masamitsu Ozeki
- Applicant: Hideki Kabune , Nobuhiko Makino , Tomoharu Hayakawa , Hitoshi Ishikawa , Tatsuya Aizawa , Shigeo Uno , Masamitsu Ozeki
- Applicant Address: JP Kariya
- Assignee: Denso Corporation
- Current Assignee: Denso Corporation
- Current Assignee Address: JP Kariya
- Agency: Nixon & Vanderhye PC
- Priority: JP2008-135313 20080523
- Main IPC: H03M1/00
- IPC: H03M1/00

Abstract:
An AD converter includes an input circuit, an operation circuit and a bus interface. The input circuit is provided with a pull-down circuit, which is capable of pulling down an analog signal input side of a sample-hold circuit whether an analog signal is inputted or not. The operation circuit is provided with a reference voltage conversion result storing register, which is capable of storing a conversion result of an analog reference voltage inputted periodically separately from a conversion result of the analog signal inputted through the sample-hold circuit. The operation circuit is further provided with a check register, which is capable of writing in and reading out data for checking operation of a signal transfer system including a bus interface through the bus interface. Thus, it is made possible to confirm normality of an external part and an internal part of the AD converter.
Public/Granted literature
- US20090289822A1 AD CONVERTER AND DATA PROCESSING UNIT Public/Granted day:2009-11-26
Information query