| 发明名称 |
Method and circuitry for multi-stage amplification |
| 摘要 |
In an amplifier, a first stage receives a differential input voltage, which is formed by first and second input voltages, and outputs a first differential current in response thereto on first and second lines having respective first and second line voltages. A second stage receives the first and second line voltages and outputs a second differential current in response thereto on third and fourth lines having respective third and fourth line voltages. A transformer includes first and second coils. A first terminal of the first coil is coupled through a first resistor to the first line. A second terminal of the first coil is coupled through a second resistor to the second line. A first terminal of the second coil is coupled through a third resistor to the third line. A second terminal of the second coil is coupled through a fourth resistor to the fourth line. |
| 申请公布号 |
US9143100(B2) |
申请公布日期 |
2015.09.22 |
| 申请号 |
US201314066980 |
申请日期 |
2013.10.30 |
| 申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
Sankaran Swaminathan;Kramer Bradley Allen;Ali Hassan;Warke Nirmal C. |
| 分类号 |
H03F3/45;H03F1/00 |
主分类号 |
H03F3/45 |
| 代理机构 |
|
代理人 |
Davis, Jr. Michael A.;Cimino Frank D. |
| 主权项 |
1. An amplifier, comprising:
a first stage for receiving a differential input voltage, which is formed by first and second input voltages, and outputting a first differential current in response thereto on first and second lines having respective first and second line voltages; a second stage coupled to the first stage for receiving the first and second line voltages and outputting a second differential current in response thereto on third and fourth lines having respective third and fourth line voltages; and a transformer coupled to the first and second stages, wherein the transformer includes first and second coils, wherein a first terminal of the first coil is coupled through a first resistor to the first line, wherein a second terminal of the first coil is coupled through a second resistor to the second line, wherein a first terminal of the second coil is coupled through a third resistor to the third line, and wherein a second terminal of the second coil is coupled through a fourth resistor to the fourth line; wherein a voltage supply node is coupled to a third terminal of the first coil and to a third terminal of the second coil. |
| 地址 |
Dallas TX US |
