+ Post New Thread

Results 1 to 7 of 7

- 7th August 2007, 07:54 #1

- Join Date
- Apr 2007
- Location
- Philippines
- Posts
- 22
- Helped
- 3 / 3
- Points
- 1,198
- Level
- 7

## op amp voltage divider

Just wondering, can an op-amp be used as a buffered voltage-divider instead of introducing gain in a circuit.

- 7th August 2007, 07:54

- 7th August 2007, 09:17 #2

- Join Date
- Oct 2005
- Location
- India
- Posts
- 1,804
- Helped
- 256 / 256
- Points
- 17,526
- Level
- 32

## 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...

- 7th August 2007, 09:17

- 8th August 2007, 15:52 #3

- Join Date
- Aug 2007
- Posts
- 32
- Helped
- 5 / 5
- Points
- 1,130
- Level
- 7

## 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 non-inverting gains.

- 9th August 2007, 15:55 #5

- Join Date
- Mar 2006
- Posts
- 49
- Helped
- 1 / 1
- Points
- 2,316
- Level
- 11

## voltage divider op amp

if u require help then contact me

Added after 21 seconds:

do contact

1 members found this post helpful.

- 10th August 2007, 00:03 #6

- Join Date
- Jan 2007
- Posts
- 79
- Helped
- 7 / 7
- Points
- 1,590
- Level
- 9

## op-amp as divider

why would you want to do a divider with an op-amp, when it can be done much more cheaply with resistors?

-M

- 10th August 2007, 00:50 #7
## op-amp 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 op-amp as a buffer so you can drive your reference over wider varying loads.

+ Post New Thread

Please login