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I'm designing a low noise instrumentation amplifier with the usual three opamp circuit. The frequency response is a bit high and a bit peaky at the top end. However, it only needs to be up to around a few kHz so I would like to kill off the response in a nice controlled way by adding some caps...
Hi, I'm looking at the AD630 for a demodulation application @ ~1MHz carrier, 1kHz signal. However, its very expensive and pretty large:
https://www.analog.com/static/imported-files/data_sheets/AD630.pdf
Does anyone know of any other similar synchronous demodulation chips which might be...
Though I would update this with my findings. Some useful references are this long application note from LT:
http://cds.linear.com/docs/Application%20Note/an43f.pdf
And this short random one I found:
http://www.discovercircuits.com/Andy/WienBridgeOscillator1.pdf
Wien seems a good way to go...
I need to design a sine wave oscillator of around 1MHz which needs to have very low amplitude noise, since it is used to lift a signal off a capacitive sensor - the sensor AM modules the sine wave and is later demodulated.
There seem to be a number of possible approaches for this circuit -...
Yes that makes perfect sense. I wonder how a simple schmit trigger oscillator compares but I guess it must be worse since your thresholds there will have pretty poor power supply rejection compared to the differential input of a comparator.
So make it run as fast as possible and divide it down...
Hi all, first post here - hope you might be able to help!
I need to design a 10MHz board level oscillator which has a 1/C frequency dependence (i.e. the 'C' will vary). I'm thinking that a relaxation oscillator would do the trick as its output f is proportional to 1/RC. However, the most...
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