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ADRF6516 Group Delay Variation

Question asked by sss on Jan 28, 2016
Latest reply on Jan 28, 2016 by sss

Hi,all

 

What is the difference between the conditions of the specification (11ns) and the typical data (about 70ns) ?

 

In the low frequency range from 0.9MHz to 0.45MHz, group delay is increasing.

What is the cause of this?

 

Specification:

Group Delay Variation;From midband to peak

Corner Frequency = 31 MHz 11 ns (typ)

 

Typical data:

Figure 15. Group Delay vs. Frequency (Gain = 20 dB)

BW = 31MHz

Group delay is about 90ns @ f=0.45MHz

Then, Top - Avelage = 90ns - 20ns = 70ns

 

Best Regards,

sss

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