How does ADN2812 jitter could not tolerate 0.067 UIp-p synchronizing with 15 MHZ data stream; could ADN2913 tolerate the 0.067 UIp-p at 15MHZ?
How does ADN2812 jitter could not tolerate 0.067 UIp-p synchronizing with 15 MHZ data stream; could ADN2913 tolerate the 0.067 UIp-p at 15MHZ?
Dear HNL,
The target applications of both ADN2812 and ADN2913 are to support SONET and SDH telecommunications.
With their superior jitter performance, both ADN2812 and ADN2913 support not only targeted applications, but also many other data link applications.
In the datasheets, we present the typical Jitter Tolerance performances specified by GR-253-CORE, at the specified signal rates, respectively.
We haven't such jitter tolerance performance measured at your interested 15Mbps because
1. what is the industry application at this rate?
2. what is the jitter spectrum defined for this 15Mbps applications? and
3. our lab has a valid jitter evaluation kit supports SONET and SDH jitter performance.
If you agreed, let's use both device jitter tolerance performance data at OC-3, 155.52Mbps to derive the possible 15Mbps jitter tolerance performance.
ADN2812:
ADN2913:
Let's use the stringent subset for derivation:
OC-3 30Hz 50 UIp-p
300Hz 24 UIp-p
6500Hz 3.5 UIp-p
65kHz 0.8 UIp-p
1.3kHz 0.61 UIp-p
Let's assume the 15Mbps signal is the 10th harmonic of OC-3 signal, so we can easily estimate a jitter tolerance performance when CDR process this 15Mbps signal by using OC-3 jitter spectrum as:
OC-3 30Hz 5 UIp-p
300Hz 2.4 UIp-p
6500Hz 0.35 UIp-p
65kHz 0.08 UIp-p
1.3kHz 0.061 UIp-p
In your application, the 15Mbps signal source has strong jitter component at kHz?
Of course, this simple quick derivation lead to a jitter tolerance performance estimation when used both CDRs to process the 15Mbps signal. To be more precisely, you'd better to use one CDR evaluation board, apply the 15Mbps signal to the board for a real application evaluation.
Hope these are useful to you.
Best Regards,
Dongfeng
Dear HNL,
The target applications of both ADN2812 and ADN2913 are to support SONET and SDH telecommunications.
With their superior jitter performance, both ADN2812 and ADN2913 support not only targeted applications, but also many other data link applications.
In the datasheets, we present the typical Jitter Tolerance performances specified by GR-253-CORE, at the specified signal rates, respectively.
We haven't such jitter tolerance performance measured at your interested 15Mbps because
1. what is the industry application at this rate?
2. what is the jitter spectrum defined for this 15Mbps applications? and
3. our lab has a valid jitter evaluation kit supports SONET and SDH jitter performance.
If you agreed, let's use both device jitter tolerance performance data at OC-3, 155.52Mbps to derive the possible 15Mbps jitter tolerance performance.
ADN2812:
ADN2913:
Let's use the stringent subset for derivation:
OC-3 30Hz 50 UIp-p
300Hz 24 UIp-p
6500Hz 3.5 UIp-p
65kHz 0.8 UIp-p
1.3kHz 0.61 UIp-p
Let's assume the 15Mbps signal is the 10th harmonic of OC-3 signal, so we can easily estimate a jitter tolerance performance when CDR process this 15Mbps signal by using OC-3 jitter spectrum as:
OC-3 30Hz 5 UIp-p
300Hz 2.4 UIp-p
6500Hz 0.35 UIp-p
65kHz 0.08 UIp-p
1.3kHz 0.061 UIp-p
In your application, the 15Mbps signal source has strong jitter component at kHz?
Of course, this simple quick derivation lead to a jitter tolerance performance estimation when used both CDRs to process the 15Mbps signal. To be more precisely, you'd better to use one CDR evaluation board, apply the 15Mbps signal to the board for a real application evaluation.
Hope these are useful to you.
Best Regards,
Dongfeng
