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7th August 2007, 07:54 #1
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op amp voltage divider
Just wondering, can an opamp be used as a buffered voltagedivider instead of introducing gain in a circuit.

7th August 2007, 07:54

7th August 2007, 09:17 #2
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op amp divider
give the output of the voltage divider to a voltage follower... thus the voltage dividers output gets buffered as well as is independent of the load since the input current of op amp is zero...

8th August 2007, 15:52 #3
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op amp divider circuit
An op amp used in an inverting amplifier configuration can have any gain including less than one. Thus is can be used as a buffered voltage divider.

8th August 2007, 15:52

9th August 2007, 15:21 #4
opamp divider
But the gain will be negative. So be careful if your circuit doesn't have reverse protect. I will use the op amp as an adder of two or more other op amps with both inverting and noninverting gains.

9th August 2007, 15:55 #5
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voltage divider op amp
if u require help then contact me
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10th August 2007, 00:03 #6
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opamp as divider
why would you want to do a divider with an opamp, when it can be done much more cheaply with resistors?
M

10th August 2007, 00:03

10th August 2007, 00:50 #7
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opamp voltage divider
Because any resistive load on that simple resistor divider will mess up your division accuracy, not to mention it might be fairly high impedance node which might be susceptible to noise. You want to use the opamp as a buffer so you can drive your reference over wider varying loads.
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