Frequency to voltage conveter using digital gates

[faiq khalid lodhi]

hi every one

can any tell me that how can i convert the frequency into the voltage by using the digital gates only.

 

[luben111]

for lower frequency range you can start charging some RC on positive edge of the signal and make Sample/Hold at the negative edge (plus discharging the RC after that).

 

[faiq khalid lodhi]

i do not think so

because it is not possible for me to use RC circuits on chip.