发明名称 |
AC Clamp Circuit for Video Applications |
摘要 |
This invention is a clamp circuit for a video input. The clamp circuit includes: a coupling capacitor; a differential amplifier comparing a video input to predetermined reference voltage; a clamp transistor having a gate connected to the output terminal of the differential amplifier and a source-drain path connected between a power supply voltage and a second terminal; a resistive element connecting the second terminal of the clamp transistor and the coupling capacitor; a first current sink carrying a first predetermined current from the coupling capacitor to ground; and a second current sink carrying a second predetermined current from the second terminal of the said clamp transistor to ground. The resistive element can be a transistor, a resistor, a diode or a switch.
|
申请公布号 |
US2010182067(A1) |
申请公布日期 |
2010.07.22 |
申请号 |
US20100691428 |
申请日期 |
2010.01.21 |
申请人 |
TEXAS INSTRUMENTS INCORPORATED |
发明人 |
BILHAN HAYDAR;SARRAJ MAHER MAHMOUD |
分类号 |
H03L5/00 |
主分类号 |
H03L5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|