ADG715 in UART Switching

Hi Mohsin,

Apologies of the delay in answering your question.

When you ask what switch would provide the effective switching speed for serial communication ?

Are you referring to:

• How fast the switch will turn ON or OFF, when switching form RX to TX channels ?

Or

• Would this be suitable to switch to pass a high frequency signal from a serial connection ?

Please let me know your thoughts.,

Kind regards,

Kevin

Thanks Kevin for the reply. Yes my question related to:

• Would this switch be suitable to pass a high frequency signal from a serial connections ?

Kind regards,

Mohsin

Hi Mohsin,

Good morning,

On my side, I'm finding it hard to get a defined frequency range on Rx and Tx, it also depends on the USB generation. 

The serial connection you will be using, will the Tx/Rx signal be in the GHz range ?

The bandwidth of the ADG715 IC is 155 MHz, therefore any frequency > 155 MHz will be attenuated if passed through the ADG715 switch.

The ADG772 is designed to as a general purpose switch that can be routed for USB 2.0 signals, however you are limited to two channels. If it is a USB 2.0 serial connection you are using ?Would it be possible to provide some more details on this ? See link below:

ADG772 (Rev. C) (analog.com)

Please let me know your thoughts ?

Kevin

What is the baud rate of the serial communication you are using ?

Kevin

Thanks for the reply.

The baud rate of the Serial communication is 115200 bps. So, the transfer rate is 8.6ms, which is less than 1MHz frequency.  so , it would work in this frequency range as the bandwidth of the ADG715 IC is 155 MHz.

Is this the correct calculation for selecting the switch?

Mohsin