基本信息:
- 专利标题: 디지털 코드에 따라 지수적으로 제어되는 차단주파수 특성을 갖는 필터 및 증폭기
- 专利标题(英):Amplifier and filter having cutoff frequency controlled logarithmically according to dgital code
- 专利标题(中):滤波器和放大器根据数字代码指数控制截止频率特性
- 申请号:KR1020120047612 申请日:2012-05-04
- 公开(公告)号:KR101477699B1 公开(公告)日:2015-01-06
- 发明人: 이종우
- 申请人: 삼성전자주식회사
- 申请人地址: ***, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, Republic of Korea
- 专利权人: 삼성전자주식회사
- 当前专利权人: 삼성전자주식회사
- 当前专利权人地址: ***, Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, Republic of Korea
- 代理人: 권혁록; 이정순
- 主分类号: H03F3/45
- IPC分类号: H03F3/45 ; H03H11/04
Amplifier circuit comprising: an operational amplifier and a feedback variable capacitor of the feedback resistor to alter the gain and cut-off frequency characteristics of the operational amplifier, changing the cut-off frequency characteristics of the operational amplifier, the capacitance of the feedback variable capacitor digital control It increases exponentially according to the code, and inversely proportional to the capacity of the operational frequency of the feedback variable capacitor block of amplifier and changed linearly in the log scale, a digital control becomes simple, which lowers costs by reducing the area of the entire circuit on a circuit, significantly it reduces the noise generated in the digital logic circuit has the advantage of increasing the amplifier performance.
公开/授权文献:
- KR1020130124025A 디지털 코드에 따라 지수적으로 제어되는 차단주파수 특성을 갖는 필터 및 증폭기 公开/授权日:2013-11-13