asp87
Junior Member level 1
- Joined
- Feb 16, 2008
- Messages
- 19
- Helped
- 0
- Reputation
- 0
- Reaction score
- 0
- Trophy points
- 1,281
- Activity points
- 1,427
Hi,
I have some basic doubts regarding voltage follower configuration.
1. In the circuit diagram shown, the A+ input gets 4.87V. Since it's a voltage follower, output should also be 4.87V. Instead, it's 4.99V. Why is it so? I need to use this circuit to buffer a signal to the input channel of an ADC and hence want the voltage to be precise.
2. Is this the proper connection for a dual power supply opamp? In this circuit the opamp is not connected to ground anywhere.
Please clarify.
I have some basic doubts regarding voltage follower configuration.
1. In the circuit diagram shown, the A+ input gets 4.87V. Since it's a voltage follower, output should also be 4.87V. Instead, it's 4.99V. Why is it so? I need to use this circuit to buffer a signal to the input channel of an ADC and hence want the voltage to be precise.
2. Is this the proper connection for a dual power supply opamp? In this circuit the opamp is not connected to ground anywhere.
Please clarify.
Last edited: