发明名称 |
Amplifier, fully-differential amplifier and delta-sigma modulator |
摘要 |
An amplifier includes a front-end gain stage and an AC-coupled push-pull output stage. The AC-coupled push-pull output stage includes a first transistor, having a source, a drain and a gate, wherein the source of the first transistor is coupled to a first voltage level; a second transistor, having a source, a drain and a gate, wherein the source of the second transistor is coupled to a second voltage level, the gate of the second transistor is coupled to the front-end gain stage, and the drain of the second transistor is coupled to the drain of the first transistor to form an output terminal of the amplifier; an AC-coupled capacitor, which is a passive two terminal electrical component coupled between the front-end gain stage and the gate of the first transistor; and a resistance component, coupling the gate of the first transistor to a bias voltage level. |
申请公布号 |
US9007249(B2) |
申请公布日期 |
2015.04.14 |
申请号 |
US201314134944 |
申请日期 |
2013.12.19 |
申请人 |
MediaTek Inc. |
发明人 |
Ho Chen-Yen;Lo Chi-Lun;Tsai Hung-Chieh;Lin Yu-Hsin |
分类号 |
H03M3/00;H03F3/45;H03F3/26;H03F3/30 |
主分类号 |
H03M3/00 |
代理机构 |
McClure, Qualey & Rodack, LLP |
代理人 |
McClure, Qualey & Rodack, LLP |
主权项 |
1. An amplifier, comprising:
a front-end gain stage; and an AC-coupled push-pull output stage, comprising: a first transistor, having a source, a drain and a gate, wherein the source of the first transistor is coupled to a first voltage level; a second transistor, having a source, a drain and a gate, wherein the source of the second transistor is coupled to a second voltage level, the gate of the second transistor is coupled to the front-end gain stage, and the drain of the second transistor is coupled to the drain of the first transistor to form an output terminal of the amplifier; an AC-coupled capacitor, which is a passive two terminal electrical component coupled between the front-end gain stage and the gate of the first transistor; and a resistance component, coupling the gate of the first transistor to a bias voltage level. |
地址 |
Hsin-Chu TW |