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TS3USB3000: TS3USB3000 - switching noise - internally charge pumped?

Part Number: TS3USB3000

Hi,

I've a direct question regarding the internals of your device TS3USB3000. We are using it as a signal switch for small high frequency analog signal, due to its low capacitance. Unfortunatly we see some noise after amplification, it looks like typical noise from a switching regulator, the frequency is around 1 MHz. Is it possible that this noise comes from TS3USB3000 itself, maybe from a charge pump for gate voltage or so?!

I hope you can help me to bring clarity... I found no hint the datasheet.

Thanks and best regards

Hendrik