发明名称 |
Semiconductor integrated circuit, and reception apparatus and radio communication terminal including semiconductor integrated circuit |
摘要 |
A semiconductor integrated circuit includes: a first capacitance element and a second capacitance element; a first amplification circuit that amplifies a potential difference of a first voltage signal and a second voltage signal supplied via the first capacitance element and the second capacitance element, respectively, to output a first amplification signal and a second amplification signal; a first resistance element that feeds back the first amplification signal to one input terminal of the first amplification circuit; a second resistance element that feeds back the second amplification signal to another input terminal of the first amplification circuit; a voltage generator that generates a predetermined voltage; and a third resistance element that transmits the predetermined voltage generated by the voltage generator to each input terminal of the first amplification circuit. |
申请公布号 |
US8816766(B2) |
申请公布日期 |
2014.08.26 |
申请号 |
US201213662471 |
申请日期 |
2012.10.27 |
申请人 |
Renesas Mobile Corporation |
发明人 |
Igarashi Yutaka;Katsube Yusaku |
分类号 |
H03F3/45 |
主分类号 |
H03F3/45 |
代理机构 |
Miles & Stockbridge P.C. |
代理人 |
Miles & Stockbridge P.C. |
主权项 |
1. A semiconductor integrated circuit, comprising:
a first capacitance element and a second capacitance element; a first amplification circuit that amplifies a potential difference of a first voltage signal and a second voltage signal supplied via the first capacitance element and the second capacitance element, respectively, to output a first amplification signal and a second amplification signal; a first resistance element that feeds back the first amplification signal to one input terminal of the first amplification circuit; a second resistance element that feeds back the second amplification signal to another input terminal of the first amplification circuit; a voltage generator that generates a predetermined voltage; and a third resistance element that transmits the predetermined voltage generated by the voltage generator to each input terminal of the first amplification circuit, wherein the voltage generator includes a fourth resistance element and a fifth resistance element that are connected in series between a high-potential side power supply and a low potential side power supply, and a diode that clamps the voltage of the node between the fourth resistance element and the fifth resistance element, and wherein the voltage generator generates a voltage of a node between the fourth resistance element and the fifth resistance element as the predetermined voltage. |
地址 |
Tokyo JP |