AD7725: FSK modulator

Q Do you have a solution for a simple FSK modulator/demodulateur (f1 25 Hz and f2"25 Hz at 300 bauds) using AD7725 ? A The AD7725 cannot be used to directly demodulate. It samples the input and provides a programmable digital filter into which you can load any co-efficients. This allows the user to implement a band pass, high pass, low pass, band stop filter, in fact you are only limited by the number of taps available. You can use the AD7725 to sample a spectrum and the process the signal further in a DSP for example to extract the FSK information. Alternatively you could consider a complete RF strip such as the AD607, AD608. The AD607 has a built in PLL which is ideal for demodulating FSK.