Re: OSC and unity gain buffer
- From: "Joel Koltner" <zapwireDASHgroups@xxxxxxxxx>
- Date: Thu, 10 Apr 2008 09:43:29 -0700
"eeaj2002" <eeaj2002@xxxxxxxxx> wrote in message
news:1173a51d-1a2b-4f72-9685-8e821a8a05df@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
"Thank you for your hint but this is not a homework problem. I was
just trying to learn about opamp myself."
OK... besides the usual suspects such as The Art of Electronics, you might
want to read something like, "Op Amps for Everyone" by Ron Mancini. It's
available as a printed book from Amazon, although it's also available freely
for download at http://focus.ti.com/lit/an/slod006b/slod006b.pdf .
"Intuitive IC Op Amps" by Frederiksen is also quite good, although it's out of
print, having been published in 1984. (I keep meaning to scan it in one of
these days and hope that the fine folks at National Semiconductor don't mind
if I post it...)
"Are you saying that its slew rate must be greater than 1.4V/us?"
Yep! The "hint" was to suggest how you get the necessary slew rate... at 1V,
1Hz you need an op-amp with a 6.28 (2*pi) V/s slew rate, so at 3V, 1MHz you're
up to 2*pi*3*1e6 = 18.8V/us -- well beyond what your LMC6484 can achieve.
---Joel
.
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