Patent ID: 8648642
Filing Date: 2014-02-11
Classification: H03K,Y10T

Abstract:
1. A switch for an analog signal comprising: a main metal oxide semiconductor (MOS) transistor comprising a first conduction terminal configured to provide an input terminal, a second conduction terminal configured to provide an output terminal, and a control terminal; a capacitor comprising a first terminal permanently coupled to said first conduction terminal of said main MOS transistor, and a second terminal; a circuit configured to charge said capacitor; and a first auxiliary transistor configured to couple said second terminal of said capacitor to said control terminal of said main MOS transistor in response to a control signal; said circuit comprising a resistor configured to permanently couple said second terminal of said capacitor to a first reference voltage, said capacitor and said resistor configured to provide a high-pass filter having a cutoff frequency lower than a frequency of the analog signal.