Hi,
I have two questions regarding VCA2615.
1 Maximum input voltage
Data sheet SBOS316D page 3, VCA2615 LNP Gain (G1, G2) = 00, maximum input voltage is 2.3 Vpp.
If there is a source signal Vs with a 100 Ohm series resistance Rs, VCA2615 active termination is RF 130 Ohm FB(1-4) = 0000, ALNP = 1.41 V/V (3 dB), RIN = 76 Ohm (formula (5) at page 18), voltage partition between source and termination resistance permits to have a source signal of about (2.3/76)*176 = 5.3 Vpp.
Is my interpretation correct?
2 Input capacitance
Data sheet SBOS316D page 3, Input Capacitance typical value is 45 pF.
The source signal series resistance with VCA2615 input capacitance realize a low-pass filter. Which is the maximum input capacitance value in order to evaluate the lower low-pass filter band?
Thank you in advance,
Daniele.