发明名称 |
LOW NOISE, PROGRAMMABLE GAIN CURRENT BUFFER |
摘要 |
A current buffer used in a receiver arrangement includes a direct path mode and a mirror path mode. The direct path mode includes a plurality of first set of transistors and a plurality of first set of current sources turned on while all remaining transistors and current sources are turned off , during the direct path mode a current signal at an input node directly appears at an output node. The mirror path mode includes a first transistor and a first current source being turned off while a plurality of second set of transistors and a plurality of second set of current sources are turned on. The current signal goes through a current mirror pair and appears at the output node with a gain which is controlled by slicing one of transistors of the current mirror pair and a second current source allowing multiple gains in the mirror path mode. |
申请公布号 |
US2016164546(A1) |
申请公布日期 |
2016.06.09 |
申请号 |
US201615044079 |
申请日期 |
2016.02.15 |
申请人 |
MEDIATEK INC. |
发明人 |
Rajapandian Saravanan;Wang Caiyi;Li Jing;Suravarapu Ravikanth;Baskaran Narayanan |
分类号 |
H04B1/00;H03G3/30 |
主分类号 |
H04B1/00 |
代理机构 |
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代理人 |
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主权项 |
1. A current buffer used in a receiver arrangement comprising:
a direct path mode that includes a plurality of first set of transistors and a plurality of first set of current sources that are turned on while all remaining transistors and current sources are turned off, during the direct path mode a current signal at an input node directly appears at an output node; and a mirror path mode that includes a first transistor and a first current source being turned off while a plurality of second set of transistors and a plurality of second set of current sources are turned on; wherein the current signal at the input node goes through a current mirror pair and appears at the output node with a gain that is controlled by slicing one of the transistors of the current mirror pair and a second current source allowing more than one gain in the mirror path mode. |
地址 |
Hsin-Chu TW |