I need a replacement for this device in an 8pin dip package. Does anyone have an extra they want to sell or barter? These a unity gain, Jfet, buffers. Mine is being used in a sample and hold circuit that bit the dust. I'm trying to not have to kludge a fix.
Jim Flanagan wrote: > I need a replacement for this device in an 8pin dip package. Does > anyone have an extra > they want to sell or barter? These a unity gain, Jfet, buffers. Mine > is being used in a sample > and hold circuit that bit the dust. I'm trying to not have to kludge a fix.
> Thanks > Jim
If I think of, I'll bring a couple home monday. I'm sure we have spares since we have boards that use them.
Jim Flanagan wrote: > I need a replacement for this device in an 8pin dip package. Does > anyone have an extra > they want to sell or barter? These a unity gain, Jfet, buffers. Mine > is being used in a sample > and hold circuit that bit the dust. I'm trying to not have to kludge a fix.
> Thanks > Jim
It looks like (you better check if you use this idea) that an TL071 (jfet inputs) would slot in very well if you can live with the reduced bandwidth (3MHz vs 20MHz) and slew rate (13V/uS vs 40V/us)
Jim Flanagan wrote: > I need a replacement for this device in an 8pin dip package. Does > anyone have an extra > they want to sell or barter? These a unity gain, Jfet, buffers. Mine > is being used in a sample > and hold circuit that bit the dust. I'm trying to not have to kludge > a fix.
>>I need a replacement for this device in an 8pin dip package. Does >>anyone have an extra >>they want to sell or barter? These a unity gain, Jfet, buffers. Mine >>is being used in a sample >>and hold circuit that bit the dust. I'm trying to not have to kludge >>a fix.
Nice to know about that site, I noticed they're not cheap!
I also noticed they have some LM377N which I have a crap load of from years ago :) I used them not for audio but for small servo to run little DC motors in a bridge mode. Maybe I can offer to sell them! :)
On Sat, 07 Nov 2009 16:22:42 -0500 Jim Flanagan <jf...@tampabay.rr.com> wrote in Message id: <4af5e523$0$4967$9a6e1...@unlimited.newshosting.com>:
>I need a replacement for this device in an 8pin dip package. Does >anyone have an extra >they want to sell or barter? These a unity gain, Jfet, buffers. Mine >is being used in a sample >and hold circuit that bit the dust. I'm trying to not have to kludge a fix.
On Sun, 08 Nov 2009 08:36:39 +1000, David Eather wrote: > Jim Flanagan wrote: >> I need a replacement for this device in an 8pin dip package. Does >> anyone have an extra >> they want to sell or barter? These a unity gain, Jfet, buffers. Mine >> is being used in a sample >> and hold circuit that bit the dust. I'm trying to not have to kludge a >> fix.
> It looks like (you better check if you use this idea) that an TL071 (jfet > inputs) would slot in very well if you can live with the reduced bandwidth > (3MHz vs 20MHz) and slew rate (13V/uS vs 40V/us)
The LM110/310 is a follower - i.e., unity gain, so if you used an opamp, you'd have to add a clooge to strap it down to unity gain.
Doesn't have to be a _big_ clooge, if it's a one-off; just lash up a feedback resistor somewhere near the chip, or maybe even just short the output to the "-" input.
<anecdote> One time, my engineer and I were musing about a circuit - he said, "A zero gain inverter? What would you use a zero gain inverter for?" I said, "virtual ground." He went, "Ah." and went away happy. :-) </anecdote>
> The LM110/310 is a follower - i.e., unity gain, so if you used an opamp, > you'd have to add a clooge to strap it down to unity gain.
> Doesn't have to be a _big_ clooge, if it's a one-off; just lash up a > feedback resistor somewhere near the chip, or maybe even just short > the output to the "-" input.
> <anecdote> > One time, my engineer and I were musing about a circuit - he said, > "A zero gain inverter? What would you use a zero gain inverter for?" > I said, "virtual ground." He went, "Ah." and went away happy. :-) > </anecdote>
> Hope This Helps! > Rich
Hi Rich.. Thanks, yes doing what you mentioned is certainly an easy option. I may end up doing that in the end. Jim
