I am working on a project that I require negative voltage for -acceleration and positive voltage for +acceleration
I am using a KXPS5-3157 accelerometer in analog mode.
Data sheet: http://www.futurebots.com/3157.pdf
While at rest, the accelerometer outputs a voltage equal to VCC/2
so 3.3V supply 0G's will be 1.65Volts, the sensitivity per G is 440mV per G
I was thinking I could design an opamp to "zero" the accelerometer at 1.65 volts, then the negative and positive voltages will come out of the opamp @ 440mv per G sensitivity
I need to cancel out gravity in the Z axis which is 1G, so thats 2.09 Volts to zero out for the Z axis
(1.65 + 0.440) volts
My run at the circuit:
My problem is I have +12V, +5V, and +3.3V available, but I don't have any negative supply voltage for -3.3V and + 3.3V
I was wondering if it's possible to design a single supply opamp that would do the same thing with a virtual ground??
using a potentiometer to zero it out, but in multisim I couldn't get it down to exactly zero
I have a bunch of mcp601 opamps, they are rail to rail single supply opamps
Data sheet: http://ww1.microchip.com/downloads/en/devicedoc/21314g.pdf
Any help is appreciated
I am using a KXPS5-3157 accelerometer in analog mode.
Data sheet: http://www.futurebots.com/3157.pdf
While at rest, the accelerometer outputs a voltage equal to VCC/2
so 3.3V supply 0G's will be 1.65Volts, the sensitivity per G is 440mV per G
I was thinking I could design an opamp to "zero" the accelerometer at 1.65 volts, then the negative and positive voltages will come out of the opamp @ 440mv per G sensitivity
I need to cancel out gravity in the Z axis which is 1G, so thats 2.09 Volts to zero out for the Z axis
(1.65 + 0.440) volts
My run at the circuit:
My problem is I have +12V, +5V, and +3.3V available, but I don't have any negative supply voltage for -3.3V and + 3.3V
I was wondering if it's possible to design a single supply opamp that would do the same thing with a virtual ground??
using a potentiometer to zero it out, but in multisim I couldn't get it down to exactly zero
I have a bunch of mcp601 opamps, they are rail to rail single supply opamps
Data sheet: http://ww1.microchip.com/downloads/en/devicedoc/21314g.pdf
Any help is appreciated
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