Invention Grant
US08614637B2 Semiconductor device having oscillators, counters and comparator
有权
具有振荡器，计数器和比较器的半导体器件
- Patent Title: Semiconductor device having oscillators, counters and comparator
- Patent Title (中): 具有振荡器，计数器和比较器的半导体器件
-
Application No.: US13213308Application Date: 2011-08-19
-
Publication No.: US08614637B2Publication Date: 2013-12-24
- Inventor: Yoshiaki Ito
- Applicant: Yoshiaki Ito
- Applicant Address: JP Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Kanagawa-ken
- Agency: Nixon Peabody LLP
- Agent Jeffrey L. Costellia
- Priority: JP2010-186884 20100824; JP2011-087839 20110412
- Main IPC: H03M1/12
- IPC: H03M1/12
Abstract:
An AD converter includes a first oscillator outputting a first frequency in accordance with a reference voltage; a second oscillator outputting a second frequency in accordance with an input voltage; a first counter measuring the first frequency; a second counter measuring the second frequency; and a comparator comparing a measurement result of the first frequency and a measurement result of the second frequency and outputting a digital value in accordance with the input voltage.
Public/Granted literature
- US20120050086A1 SEMICONDUCTOR DEVICE Public/Granted day:2012-03-01
Information query
