SWITCH USED IN PROGRAMMABLE GAIN AMPLIFIER AND PROGRAMMABLE GAIN AMPLIFIER
    1.
    发明公开
    SWITCH USED IN PROGRAMMABLE GAIN AMPLIFIER AND PROGRAMMABLE GAIN AMPLIFIER 审中-公开
    开关,可使用在可编程放大器和可编程放大器

    公开(公告)号:EP3174201A1

    公开(公告)日:2017-05-31

    申请号:EP16207064.3

    申请日:2010-10-21

    申请人: Atmel Corporation

    摘要: A switch circuit is provided. The switch circuit may include a first transistor having a source terminal to accept an input signal, a drain terminal to provide an output signal, and a gate; a power supply providing a gate voltage. The switch circuit may also include a circuit to couple a switch signal to the gate, wherein the circuit turns the first transistor 'off' for all values of the input signal when the switch signal is 'low.' A programmable gain amplifier (PGA) is also provided. The PGA may include an input stage having an input node to couple an input signal, and an output node to provide a gate signal, at least a first gain stage including a resistor and a switch circuit as above. A differential gain amplifier may be included to provide an output signal from the gain signal.

    摘要翻译: 本发明提供一种开关电路。 开关电路可以包括具有源极端接受输入信号,漏极端子,以提供输出信号,和一个栅极的第一晶体管; 一个电源提供的栅极电压。 因此,该开关电路可以包括电路耦合的开关信号到栅极,worin接通电路的输入信号。当开关信号是所有值的第一晶体管“关断”“低”。 因此,一个可编程增益放大器(PGA)设置。 该PGA可以包括在输入级具有输入节点耦合到输入信号,并且输出节点以提供栅极信号,至少包括电阻器和如上述的开关电路的第一增益级。 差动增益放大器可被包括以提供对从所述信号增益输出信号。