Cheap and available AM receiver chip?

DXing for the masses? Melexis' TH7122 transceiver chip is fairly easy to use, and Future shows it as $3.33 in 1pc qty.

At these frequencies, it shouldn't be impossible to build a discrete solution, surely?

snipped-for-privacy@gmail.com schrieb:

No, it's not DX. And the TH7122 supports only FM/FSK/ASK, not AM.

Principally yes, but at more circuit (and development) expense. Some ready-to-use and simple standard circuit would be appreciated.

Tilmann

Hmm? Since the chip has an analog RSSI out, and the IF bandwidth is set externally, what's the problem with using this part? We use it in "AM" applications. Not at that low frequency, of course.

snipped-for-privacy@gmail.com schrieb:

OK, I will have a deeper look at the datasheet. Maybe the headlines are just misleading...

Tilmann

Heh. There are parts from Infineon that do ASK, and yet the datasheet says "FSK chip, for ASK applications see xyz".

Google on "RSSI" and "receiver" and you'll find a couple of dozen devices that will do your job. You do understand RSSI, yes? And a good AGC loop that will keep the RSSI in the middle of it's curve?

Jim

-- "Dream as if you'll live forever. Live as if you'll die today."