Menu

Very Low Power Preamp

Search this Thread

Prev

Previous Post

Next Post

Next

#3

Report Post

Old

November 5th 14, 06:27 PM posted to rec.radio.amateur.equipment

rickman

rickman is offline

external usenet poster

First recorded activity by RadioBanter: Nov 2012

Posts: 989

Default

Very Low Power Preamp

On 11/4/2014 8:29 PM, wrote:
rickman wrote:
I am working on a project for receiving a very narrow bandwidth signal
at 60 kHz. One of the design goals is to keep the power consumption to
an absolute minimum. I'm trying to figure out how to run a
pre-amplifier on less than 100 uW. So far I have found nothing. Any
suggestions?

Specifying the output, impedance, and degree of linearlity required
might get a meaningful response.

The Maxim MAX480 opamp will run from a single supply down to 1.6V with
a supply current of less tha 20 uA.

Most of the micropower opamps I've seen run in the range of 30 to 50 uW
quiescent which doesn't leave a lot for output.

Thanks for the reply. I'm not sure what you are asking regarding the
output and impedance. The input would be high impedance and the output
low driving another high impedance input. I can design the circuit
around the amp, I just can't find anything very low power. The main
problem seems to be getting enough gain-bandwidth product to actually
amplify the signal.

The part you suggest has a number of problems. One is that it is not
recommended for new designs. The other is that it only has a gain
bandwidth product of 20 kHz.

--

Rick

Reply With Quote

Reply With Quote

Thread Tools	Search this Thread
Show Printable Version	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Posting Rules
Smilies are On [IMG] code is On HTML code is Off Trackbacks are On Pingbacks are On Refbacks are On

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Preamp, RF amp and LNA.	sjones	Homebrew	2	October 22nd 06 12:07 PM
Preamp	Asimov	Homebrew	8	October 3rd 05 06:50 PM
WANT D 104 UG8 PREAMP MIC	Marty B.	Swap	1	September 21st 04 04:53 AM
Ant Preamp AW-203-1 ?	Henry Kolesnik	Antenna	0	May 23rd 04 09:31 PM
Ant Preamp AW-203-1 ?	Henry Kolesnik	Boatanchors	0	May 23rd 04 09:31 PM

All times are GMT +1. The time now is 05:48 AM.

About Us

"It's about Radio"

Contact Us RadioBanter forum home Privacy Statement

Copyright © 2017