QThe ADF4108 Datasheet states a minimum frequency of 1GHz and a slew rate of
320V/us or more below 1 GHz.
Can I feed the ADF4108 with a sine wave 0.5 to 1v pk2pk at 330 MHz to get the
PLL operational ?
will the ADF4108 be operational at 330 MHz and RFin ~ 0.5 to 1Vpp?
AThe max input across the RF inputs must be limited to +5dbm= differentially =
+/-0.562 pk to pk or 1.125 single ended (Vp = 0.562) .
As the slew rate of a sinewave = 2*pi*f*V(peak), then with a peak value of
0.5Volts, and an input of 330Mhz, you will get a slew rate of:
2 x 3.14159265 x 0.5 x 330 x 10^6 = 1036.73 x 10^6 Volts per sec = 1035 v/usec .
Therefore, using a RFin with a frequency of 330MHz and with amplitude of ~ 0.5
to 1Vpp is fine.