siboy
Member level 3
frequency jump
I want to use my PLL to do open loop modulation. When I break the loop(CP's output), the PLL's freqency jump up about 500KHz. My VCO's KV is 100MHz/V, so I guess the Loop Filter's voltage changeing about 5mV. So what's reason? Are there any good papers about it?
Thanks!
I want to use my PLL to do open loop modulation. When I break the loop(CP's output), the PLL's freqency jump up about 500KHz. My VCO's KV is 100MHz/V, so I guess the Loop Filter's voltage changeing about 5mV. So what's reason? Are there any good papers about it?
Thanks!