I am currently using Hittite’s HMC829 to generate a 4GHz clock using a 100MHz sinusoidal input reference. there seems to be a 400 MHz (@ -92dBm) emission from the chip. is this normal? is there anyway to reduce this further?
I have a product using the HMC829 synthresizer.
schematic is very similar to the one in the evaluation board. The control is by a microcontroller type PIC18...
it was found that 40% of the products, will not lock at 80 deg. C
It ws found that when DVDD…
Summary: HMC829LP6GE enters a 'frozen' state when restarted at high temperatures (but well below the 85C max operating temperature), the temperature depending on the level of the input 30MHz reference .
I am currently using Hittite’s HMC829LP6GE…
We are using HMC840 and HMC829 devices, both with 100 MHz phase detection frequency (PDF). We need to perform frequency hopping (in a range of about 100 MHz) and do it as fast as possible (preferably less than 100 usec.).
I have the following questions…
在选型表中，hmc829的频率带宽有5.6-8.4Ghz，但在数据手册中却只有0.045至1.05, 1.4至2.1, 2.8至4.2,三种带宽，请问这是什么情况？
I'm using HMC829 RF PLL evaluation board I run the configuration from examples that Hittite provided,
at the RF output I see some spurious at different places that running through small band =1MhZ when I click on read lock register(12h) with…
I have a project ,used HMC829 ,my design is refered to ADI HMC829demo ,now it unlocked . if I reduced the resistor(51 ou) in series ,it got be better ,but it still unlocked at temperature experiment . while , if I remove this resistor…
I would like to know if it would be possible to modulate in frequancy a closed loop with the HMC829 PLL. Actually what I want to know is if it would produce linear modulation response from the modulation input (good THD for audio modulating signals).