Lastly, it is assumed that the LMH0344 input is receiving an input signal from a driver device whose rise/fall times comply with SMPTE rise/fall time requirements. Note that the LMH0344 output rise/fall time meets the LMH0346 input rise/fall time requirements.

The LMH0346 specifies both an input rise/fall time maximum in the datasheet, but this is not based on a SMPTE specification. Water Permeability 63 lmh/psi 110 lmh/psi Membrane Code PPVG PPVGNF RVRM endotoxins < 0.5 Eu/mL extractables 0.3 < 10 g C/cm2 Virus Retention LRV > 1.

You can find the max rise/fall time in Table 6.6: Therefore, only the LMH0302 is applicable for meeting a specific rise/fall time requirement defined by SMPTE. From a SMPTE compatibility standpoint, rise and fall time requirements are only required for cable driver 75-ohm outputs. The input jitter tolerance for the LMH0346 shows that the LMH0346 exceeds the SMPTE requirements and can therefore achieve and retain lock in the presence of at least the amount of jitter specified in the datasheet.ģ. I have posted the input jitter tolerance levels for multiple SMPTE data rates for convenience.

According to SMPTE Standard RP184-1996, input jitter tolerance is defined as 'peak-to-peak amplitude of sinusoidal jitter that, when applied to an equipment input, causes a specified degradation of error performance.' Input jitter tolerance must be at least the requirement set by SMPTE standards.

The parameter to pay attention to, instead, is the additive jitter parameter, which pertains to the amount of jitter that is typically added as a result of the signal passing through the cable driver.Ģ. Input jitter tolerance is a parameter applicable to reclockers, as this parameter determines the maximum amount of input jitter allowed before the reclocker is unable to retain lock. There is no input jitter tolerance requirement for the LMH0302, since it is a cable driver.

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