AMC1336-Q1: Requesting to provide input leakage current for Pin 7 i.e., CLKIN Pin

Vamsi Bankuru

Part Number: AMC1336-Q1

Hi TI Team,

Requesting to provide input leakage current for Pin 7 i.e., CLKIN Pin, with part number AMC1336-Q1, which will help in our design.

Regards,

Bankuru Vamsi

9 months ago

0 Samiha Sharif 9 months ago

TI__Expert 5140 points

Hi Bankuru,

Thank you for your question! Let me check with the team and get back to you early next week.

Best regards,

Samiha

0 Samiha Sharif 9 months ago in reply to Samiha Sharif

TI__Expert 5140 points

Hi Bankuru,

Thanks for your patience. The closest thing to leakage current to describe this pin may be the input current into the digital input:

Strictly speaking, this is not a leakage current but current through an internal pull-down resistor in the order of 1MOhm:

I hope this helps!

Best,

Samiha

0 Vamsi Bankuru 9 months ago in reply to Samiha Sharif

Prodigy 90 points

Hi Samiha,

Thanks for your quick response.

Regards,

Vamsi

0 Vamsi Bankuru 8 months ago in reply to Samiha Sharif

Prodigy 90 points

Hi Samiha,

Can you please help me with 8.2.3 Input Filter Design in datasheet. May I know the cut off frequency with those parameters in the datasheet and let's consider Rshunt as 1476ohms.

Regards,

Vamsi

0 Samiha Sharif 8 months ago in reply to Vamsi Bankuru

TI__Expert 5140 points

Hi Vamsi,

Thank you for your question. The cutoff frequency for the input filter in Figure 52 can be calculated as:

f_C = 1 / [ 2 ⋅ π ⋅ C_DIFF⋅ (2 ⋅ R_FILTER) ] = 0.97 MHz

Best,

Samiha

0 Vamsi Bankuru 8 months ago in reply to Samiha Sharif

Prodigy 90 points

Hi Samiha,

Thank you for your quick response. Can you please confirm in the above equation you considered Rfilter as 10ohms and you didn't consider Rshunt. May I know does the Rshunt has any effect on the cut off frequency.

Regards,

Vamsi

0 Samiha Sharif 8 months ago in reply to Vamsi Bankuru

TI__Expert 5140 points

Hi Vamsi,

You're welcome! Yes, in the equation, I am not considering Rshunt. Rshunt typically shouldn't affect the cut off frequency. If you are switching very fast, it may have an impact depending on your waveform. What shape waveform are you measuring in your application?

Best,

Samiha

0 Vamsi Bankuru 8 months ago in reply to Samiha Sharif

Prodigy 90 points

Hi Samiha,

It's a continuous pulse waveform. Can you please help me with the effective equation if we consider the Rshunt.

Regards,
Vamsi

0 Samiha Sharif 8 months ago in reply to Vamsi Bankuru

TI__Expert 5140 points

Hi Vamsi,

Thanks for your patience, I was out of the office. The Rshunt value will not affect on the cut off frequency. This app note may be useful to select an appropriate shunt.

Best,

Samiha

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AMC1336-Q1: Requesting to provide input leakage current for Pin 7 i.e., CLKIN Pin