D/A converter having capacitances, tone voltage lines, first switches, second switches and third switches
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 29, 2003
Grant Date -
Dec 12, 2002
app pub date -
Mar 25, 2002
filing date -
Mar 26, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided is a D/A converter circuit which copes with high-bit digital signals and has favorable linearity and small occupation area. In a capacitive divider type DAC, capacitances are simply provided in a one-to-one relationship correspondingly to lower order bit digital signals instead of providing capacitances one-to-one correspondingly to bits. In a reset period, voltages having a height corresponding to higher order bit digital signals are provided to one electrodes (first electrodes) of the capacitances thereby charging the capacitances. In a write period, voltages having a height corresponding to lower order bit digital signals are provided to the other electrodes (second electrodes) of the capacitances thereby charging the capacitances.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully