LMK1C1104: SPDT switch recommendation for the CLK input

Hi Lauri,

I have compiled a list of switches that match your requirements. You can select required channel count from this list.

SPDT switches

You can use following switches for you case but it really depends on your channel count requirement.

SN3257-Q1 : Low propagation delay and good bandwidth with meeting your requirements. It does have higher channel (4 Channels) count if you need just 

TMUX1248 : Lower channel (1 Channel) count with low bandwidth.

Best,

Asim

Hi Lauri,

For BW TMUX1248  is up to 250 MHz and SN3257-Q1  is up to 2000 MHz. It depends on what frequency your are using for these. If its >50MHz. I would recommend using the SN3257-Q1. 

For jitter specification, I am not sure since this is from Analog Switches product line. They usually don't have jitter specification. 

We can refer this request to relevant people from switching support to answer any specific question.

Best,

Asim

Hi Lauri,

Got it! So a good practice is to select a device with 1.5x the needed bandwidth. I see the LMK1C1104 max frequency is 250MHz. So for single channel switches that support at least 375 MHz at 1.8V, 3.3V and up to 5V then the TMUX6119 is the only option if you can use it in a dual rail fashion. If dual rail is not the required application then we need to look at the 2 channel mux options that can support single rail in which case the TMUX136 is a great choice. 

Thanks!

Alex 

Lauri,

My mistake! The SN3257-Q1 is going to be the ideal choice here then. A 4 channel mux would be the minimum configuration that supports all required features.

Thanks!

Alex