Description:
These filters are a proprietary, absorption design that has attenuation and group delay frequency responses similar to those of the Bessel-Thomson filter. Bessel-Thomson filters filter by reflection and can cause increased bit error rates and eye diagram closure due to multiple reflections. By contrast, these filters filter by absorption. They have excellent impedance matches and very good return losses, both within and above the filter pass band.
Model 5915-x Filters can also be used to increase the risetime of a signal without adding unwanted distortion. For additional details on these filters, see the Picosecond application note, AN-7a, “Low-Pass Risetime Filters for Time Domain Applications”.
When ordering, specify the required 10%-90% risetime.
