So I need to demodulate the FM signal from a sensor with highest SNR possible, at least 70-75 dB. IF is 10.7 MHz, max. deviation is 200 kHz but I can change those values if needed. Baseband signal frequency range is 60-5000 Hz. There is a space constraint: PCB should not be larger than 18x40 mm. It also would be nice if the circuit could be powered from a 3.3-5V source.
Quadrature detectors I find have SNR of <60 dB which is insufficient. The only solution I found is NJW2311V but I can't find it for sale. Maybe there are other options?