| 发明名称 |
RAIL-TO-RAIL FOLLOWER CIRCUITS |
| 摘要 |
Rail-to-rail follower circuits. In some embodiments, a source follower circuit may include a first level shifter configured to receive an input voltage; an N-type Metal-Oxide-Semiconductor (NMOS) transistor having a gate terminal coupled to an output of the first level shifter; a second level shifter configured to receive the input voltage; a P-type Metal-Oxide-Semiconductor (PMOS) transistor having a gate terminal coupled to an output of the second level shifter and a source terminal coupled to a source terminal of the NMOS transistor; and an amplifier configured to receive the input voltage and to output a current at a node between the source terminal of the NMOS transistor and the source terminal of the PMOS transistor, wherein the current is determined based upon a difference between the input voltage and a reference voltage. |
| 申请公布号 |
US2015256135(A1) |
申请公布日期 |
2015.09.10 |
| 申请号 |
US201414203461 |
申请日期 |
2014.03.10 |
| 申请人 |
Freescale Semiconductor, Inc. |
发明人 |
Coimbra Ricardo P.;Silva, JR. Edevaldo Pereira;Couto Andre L. |
| 分类号 |
H03F1/42;H03F3/45 |
主分类号 |
H03F1/42 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A source follower circuit, comprising:
a first level shifter configured to receive an input voltage; an N-type Metal-Oxide-Semiconductor (NMOS) transistor having a gate terminal coupled to an output of the first level shifter; a second level shifter configured to receive the input voltage; a P-type Metal-Oxide-Semiconductor (PMOS) transistor having a gate terminal coupled to an output of the second level shifter and a source terminal coupled to a source terminal of the NMOS transistor; and an amplifier configured to receive the input voltage and to output a current at a node between the source terminal of the NMOS transistor and the source terminal of the PMOS transistor, wherein the current is determined based upon a difference between the input voltage and a reference voltage. |
| 地址 |
Austin TX US |
