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I have no clear data about accuracy of the frequency of the signal. It results from accuracy of the tag, which rings with its own resonant frequency. I will check it. All in all I'm going to make Q and gain tunable.
Regarding to the poly capacitors - whether they are really necessary if they...
Filter adjustment: my experience shows that analog tuning brings higher sensitivity in case of low external noise. That's why I'am asking about digital potentiometers and they impact on this circuit.
I use this topology:
The chart below shows the filter response for 1ms 58kHz 20mV signal:
I...
I have to design a band-pass active filter which will be a part of receiver of acousto-magnetic EAS system. Actually I'm doing a simulations using LTSpice and try to select a few opamps for further prototyping. It works fine, but I have a few questions. The key parameters are the following:
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Hello!
I'm trying to set up a 1Gbit switch, built witch VSC7398 from Vitesse. I have a mictrocontroller on this same PCB board, which is connected with VSC7398 via SPI, so I can read and write registers in VSC7398. Actually PHYs works with autonegotiation (LEDs indicate current speed), but...
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