Dear Steve,

Thanks for replying. Actually I live in a part of my country where sourcing of specialized components is a real problem. Initially I considered using a DDS chip. But set back due to unavailability. Frequency range is within 10K. I haven't done the homework yet. Just trying to get some guidelines whether to base it on a 16F. The possibility you can say. If it is technically possible then I might consider using a 18F too. That depends on the overall BOM cost.