1. Home
  2. Electronics Design
  3. low noise amplifier - can i build it?
  4. Page 2

low noise amplifier - can i build it?

It reduces Johnson noise, but does it have the same effect on flicker noise at LF?

--
~ Adrian Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk
Reply to
Adrian Tuddenham
Loading thread data ...

This is the classic reason to use an AC driven displacement sensor rather than a DC coupled velocity sensor followed by a chopper. You get orders of magnitude better sensitivity at low frequencies, and flicker noise is no longer an issue. Unfortunately, I'd bet you don't have the freedom to mess with the sensor arrangement.

Regards Ian

Reply to
Ian

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.