I need to design a Phase Lock Loop for my Project.

The input signal is a Resonant freq that will shift from 10Mhz @ 26 degrees Celsius downwards as temperature decreases @ 4khz per degrees Celsius

Output signal is required to be in digital value.

input freq varies linearly so i suppose a 2nd order LPF will suffice.

however i am not sure on how to design the VCO LPF MULTIPLIER circuit using inductors, resistors, capacitors e.t.c

can anyone help?

The input signal is a Resonant freq that will shift from 10Mhz @ 26 degrees Celsius downwards as temperature decreases @ 4khz per degrees Celsius

Output signal is required to be in digital value.

input freq varies linearly so i suppose a 2nd order LPF will suffice.

however i am not sure on how to design the VCO LPF MULTIPLIER circuit using inductors, resistors, capacitors e.t.c

can anyone help?

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