CDCLVP1204: switching glitch free? switching time?

Hans

Part Number: CDCLVP1204

Hello Team,

can you provide the switching time when using IN_SEL to gate a 2MHz clock at IN0 while setting IN1=0, please? This timing is not specified in the data sheet.

Also, will the switching be glitch free?

Thank you and Best Regards, Hans

over 1 year ago

0 Evan Su over 1 year ago

TI__Genius 11630 points

Hi Hans,

I have paged our buffer expert. Could you clarify what you mean by "setting IN1 = 0"? Is no clock applied there?

Thanks,

Evan Su

0 Hans over 1 year ago in reply to Evan Su

TI__Genius 12865 points

Hi Evan, correct; no clock at IN1, just applying a logic zero.

Hans

0 Asim Khan over 1 year ago in reply to Hans

TI__Genius 9250 points

Hi Hans,

I don't have the timing data but I can do a quick lab measurement on the part to check that for you. Please expect a result by early next week.

Best,

Asim

0 Hans over 1 year ago in reply to Asim Khan

TI__Genius 12865 points

Hello Asim, would it be possible to measure several parts, please? Maybe 3 to 5? This would give a little more confidence in the results.

Thank you and Best Regards, Hans

0 Asim Khan over 1 year ago in reply to Hans

TI__Genius 9250 points

Hi Hans,

This switch is functional type of test so I won't expect huge difference. I will have only one EVM otherwise we need to wait another week.

Best,

Asim

0 Hans over 1 year ago in reply to Asim Khan

TI__Genius 12865 points

Hi Asim, one measurement is fine!

Thank you and best regards, Hans

0 Hans over 1 year ago in reply to Asim Khan

TI__Genius 12865 points

Hi Asim,

any update regarding your measurements, please?

Thank you and Best Regards, Hans

+1 Asim Khan over 1 year ago in reply to Hans

TI__Genius 9250 points

Hi Hans,

Switching time is less than 10 ns in AC coupled outputs mode. I would expect similar in DC coupled mode or better.

Below is a screenshot of CDCLVP1204 output switching from INP0 (100 MHz) to INP1 ( No clock).

There is no glitch on the transition. Since this is AC coupled output you would see that outputs take time to settle in Figure 2.

Figure 1.

Figure 2.

Best,

Asim

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CDCLVP1204: switching glitch free? switching time?