J
john
- Jan 1, 1970
- 0
Hello,
Please look at the following data sheet of an instrumentation amplifier
INA2133.
http://focus.ti.com/lit/ds/symlink/ina2133.pdf
I am using it as a constant current source ( figure 16, page 13 ). I
made the following changes in the circuit
1. I put a capcitor in series with the load for AC coupling reason.
2. The power supply of the circuit is +/- 15 volts.
I have a following questions about the circuit.
1. For example, if the circuit is producing 100microA and the load
resistance is 1mega ohm then the complaince voltage will be +/- 10
volts or the voltage across the load will be +/- 10 volts. How can I
keep the complaince voltage or voltage across the load equal to +/-
0.7 volts with the current of 100microA without changing the power
supply which is +/-15 volts?
Please advice!
Thanks
John
Please look at the following data sheet of an instrumentation amplifier
INA2133.
http://focus.ti.com/lit/ds/symlink/ina2133.pdf
I am using it as a constant current source ( figure 16, page 13 ). I
made the following changes in the circuit
1. I put a capcitor in series with the load for AC coupling reason.
2. The power supply of the circuit is +/- 15 volts.
I have a following questions about the circuit.
1. For example, if the circuit is producing 100microA and the load
resistance is 1mega ohm then the complaince voltage will be +/- 10
volts or the voltage across the load will be +/- 10 volts. How can I
keep the complaince voltage or voltage across the load equal to +/-
0.7 volts with the current of 100microA without changing the power
supply which is +/-15 volts?
Please advice!
Thanks
John