Thanks for the idea! I think FSK would be more reliable than ASK. With the current design, I see all these parts around the SA639, then I look at the Silicon Labs FM receiver chips where you hook up an antenna and get audio out and am envious! Harold > Is the frequency shift wide enough that you could use a narrow filter and > treat it as ASK? > The SA636 might work for you without messing with the discriminator part > if so. > > > -----Original Message----- > From: piclist-bounces@mit.edu On Behalf Of > Harold Hallikainen > Sent: Thursday, September 13, 2018 7:35 AM > To: Microcontroller discussion list - Public. > Subject: RE: [EE] FSK receiver chips? > > Interesting idea. This is a battery operated device, and I wonder about > power consumption. Also, my DSP experience is close to none! I'm currentl= y > using the SA639 and driving a PIC18 to do packet decoding, drive a > display, etc. If going to DSP demodulation in a PIC (as opposed to using = a > standard receiver chip), it would be interesting to move everything to on= e > chip (demodulation, packet parsing, etc.) but, again, I worry about power > consumption. > > Thanks for the idea! I'll look into it. > > Harold > > > >> Develop your own using a dsPic ? >> >> >> >> -----Original Message----- >> From: piclist-bounces@mit.edu On Behalf Of >> Harold Hallikainen >> Sent: 12 September 2018 22:33 >> To: Pic List >> Subject: [EE] FSK receiver chips? >> >> I'm currently using an SA639 as an FSK receiver. My FSK is at 1.8 MHz >> (on IR). I use the mixer in the SA639 to upconvert to 10.7 HHz, then >> use ceramic filters in the IF and a ceramic resonator in the >> quadrature detector. I'm seeing single chip DSP-based FM receivers >> (from places like Silicon Labs). Does anyone know of any DSP-based FSK >> receiver chips? I could get rid of a lot of parts! >> >> Thanks! >> >> Harold >> >> >> >> -- >> FCC Rules Updated Daily at http://www.hallikainen.com Not sent from an >> iPhone. >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> >> -- >> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive >> View/change your membership options at >> http://mailman.mit.edu/mailman/listinfo/piclist >> > > > -- > FCC Rules Updated Daily at http://www.hallikainen.com Not sent from an > iPhone. > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 FCC Rules Updated Daily at http://www.hallikainen.com Not sent from an iPhone. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .