PRL-257 Customer Review

Basic Lab Tools > Frequency Dividers > PRL-257 > Customer Review

The PRL-257 was reviewed by a well-respected member of the Signal Integrity mailing list:

". . . the device has a [specified] bandwidth up to 12GHz, and my measurements show that its actual bandwidth goes out to 14GHz.  I thought that was very good margin.  But what really impressed me was the jitter performance.  I fed in a clock source with 170fs one sigma RJ, and the clock divider puts out a divided down clock with 770fs one sigma RJ.  That is surprisingly good for a small device with such high bandwidth.  Usually you would expect this kind of performance from a device weighing 40 lb and takes up a whole lot of bench top space, but this clock divider is small enough to fit in your pocket."

The full review is available at the si-list archives.

Scope shots from his testing are below:

Fig. 3: PRL-257-8 Output Waveform, 14 GHz input clock divided by 64

Fig. 4: PRL-257-8 Jitter Performance*, 10.3125 GHz clock divided by 8

Fig. 5: PRL-257-8 Jitter Performance*, 10.3125 GHz clock divided by 64

Fig. 6: PRL-257-8 Jitter Performance*, 2.125 GHz clock divided by 8

PRL-257 | Detail | Diagram | Specifications | Datasheet