Thanks for this info. Unfortunately, Atmel doesn't make the T4334 now.

But, while searching the site for keywords, I found the ATA5283 and
ATA5282 125 khz receiver chips that draw less than 4 microamps while
listening. I don't think there is anything inside the chip that limits
the frequency of operation though, these should operate at much lower
frequencies if an appropriate tuned circuit is attached.

So, I will look at these chips in detail later.

I was attracted to the Temic wwvb/dcf77 receiver chips because they
draw 30 microamps...so, a receiver that draws 4 microamps is indeed
low power and is very promising.

Regards,

A


In any case, Temic was bought out by Atmel.

I believe Atmel called this chip T4224 but when looking for it on their
web site it ain't there.

Hello Albert,

I was attracted to the Temic wwvb/dcf77 receiver chips because they
draw 30 microamps...so, a receiver that draws 4 microamps is indeed
low power and is very promising.

AFAIK many "atomic clocks" listen to WWVB briefly and then turn off the
receiver again. With a very low on/off duty cycle the power consumption
of the receiver wouldn't matter so much.

Regards, Joerg

http://www.analogconsultants.com