Title:
LOW-POWER-CONSUMPTION CAPACITIVE SENSOR INTERFACE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2016/112720
Kind Code:
A1
Abstract:
Provided is a low-power-consumption capacitive sensor interface circuit, constituted by a sensor control oscillator, a multiplexing frequency divider, and a multiplexer; the output terminal of the sensor control oscillator is connected to the input terminal of the multiplexing frequency divider; the output terminal of the multiplexing frequency divider is connected to the input terminal of the multiplexer; the output terminal of the multiplexer is connected to the input terminal of a counter; the other input terminal of the counter is externally connected to a clock signal; the output terminal of the counter is a digital signal output terminal. The interface circuit employs an all-digital architecture to process a sensor signal in a frequency domain; the configuration of the circuit is simple and the circuit can operate at a relatively low power supply voltage, which is advantageous to reducing the overall power consumption of the circuit; the area of the chip is reduced and the effect on the process is minimal.
More Like This:
| JP3821308 | INPUT BUFFER FOR SEMICONDUCTOR MEMORY DEVICE |
| JPH02113719 | ECL-CMOS LOGIC LEVEL CONVERSION CIRCUIT |
| JPH05114853 | LOW-NOISE OUTPUT DRIVING CIRCUIT |
Inventors:
HE YIGANG (CN)
DENG FANGMING (CN)
ZUO LEI (CN)
YIN BAIQIANG (CN)
LI BING (CN)
YUAN LIFEN (CN)
XIANG SHENG (CN)
HE WEI (CN)
DENG FANGMING (CN)
ZUO LEI (CN)
YIN BAIQIANG (CN)
LI BING (CN)
YUAN LIFEN (CN)
XIANG SHENG (CN)
HE WEI (CN)
Application Number:
PCT/CN2015/092249
Publication Date:
July 21, 2016
Filing Date:
October 20, 2015
Export Citation:
Assignee:
UNIV HEFEI TECHNOLOGY (CN)
International Classes:
H03K19/0175
Foreign References:
| CN104485938A | 2015-04-01 | |||
| CN202041493U | 2011-11-16 | |||
| CN1688889A | 2005-10-26 | |||
| CN103840825A | 2014-06-04 | |||
| US4732043A | 1988-03-22 | |||
| US4468665A | 1984-08-28 |
Attorney, Agent or Firm:
CHANGSHA XINGYAO PATENT FIRM (CN)
长沙星耀专利事务所 (CN)
长沙星耀专利事务所 (CN)
Download PDF: