Unique request: 10MHZ (-3db) pre-amp

Gomer · 24th March 2003, 09:19 PM

I am looking for plans or such for a very high resolution pre-amp. I need it to extend to about 10Mhz before rolling off. 5 would be ok, but 10 is better. This is for a non-audio application, but I thought someone here might know something.

Does anyone know if Eric Wallins Pre-amp2 can be easily modified (via op-amp change, or couple of parts change) to accomidate this? I already have one an could do a parts swap if it would work.

Thanks!!

A 8 · 24th March 2003, 09:39 PM

Is it for video? Either way there are a lot of op amps availible.
What does is need to be good at?

rljones · 24th March 2003, 09:41 PM

There are many high speed op-amps that can accomplish what you want, but the layout is crucial. See Elliot's page for some discussion using such an op-amp: http://sound.westhost.com/highspeed.htm

Regards, Robert

BrianL · 24th March 2003, 09:55 PM

Try something like a Burr-Brown (aka TI)
OPA686 or OPA687

24th March 2003, 09:19 PM	#1
Gomer diyAudio Member Join Date: May 2001	Unique request: 10MHZ (-3db) pre-amp I am looking for plans or such for a very high resolution pre-amp. I need it to extend to about 10Mhz before rolling off. 5 would be ok, but 10 is better. This is for a non-audio application, but I thought someone here might know something. Does anyone know if Eric Wallins Pre-amp2 can be easily modified (via op-amp change, or couple of parts change) to accomidate this? I already have one an could do a parts swap if it would work. Thanks!!

24th March 2003, 09:55 PM	#4
BrianL diyAudio Member Join Date: Mar 2002 Location: USA	Try something like a Burr-Brown (aka TI) OPA686 or OPA687 __________________ bel

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24th March 2003, 09:39 PM	#2
A 8 diyAudio Member Join Date: Mar 2003 Location: Gothenburg	Is it for video? Either way there are a lot of op amps availible. What does is need to be good at?

24th March 2003, 09:41 PM	#3
rljones diyAudio Member Join Date: Mar 2001 Location: california	There are many high speed op-amps that can accomplish what you want, but the layout is crucial. See Elliot's page for some discussion using such an op-amp: http://sound.westhost.com/highspeed.htm Regards, Robert

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