ADF7011 433MHz transmitter

Maybe some of these...

There are these extremely simple to apply transmitter chips such as the ADF7011, which are a 76kbit transmitters including VCO & PLL. A few R & C and you're done. This gives me complete transmitter on a thumbnail, just the actual microcontroller delivering the data is to be added plus a quartz signal. 30mA supply at 3V and it costs 4$. Now comes the stupid part. How am I expected to receive the signals ? Yes, I could build a PLL with a VCO, crystal, then perhaps an AFC to lock to the frequency unless I'm hopping the freqeuncy. Downmix to whatever and decode the bits. It takes few hundred mA and perhaps a handsized pcb. Or downconvert with a PLL multiplied Quartz from a DSP, sample at few MSamples and have some code to extract the bits.

I'm somehow expecting a thumbnail sized receiver equally trivial to build like the transmitter. No ? Did I miss something ?

Rene

nope, AD only seem to make TX's or RX/TX

Dumb eh?

martin

"An eye for an eye makes the whole world blind" Gandhi

Apparently. They somehow figured the need for a receiver to be (much) smaller than for transmitter or transceivers. Or they figured it to be done differently, such a with an ADC at a subharmonic.

Rene

Thanks. the receivers are rather slow with 4800 baud.

Rene