Ina125 Load Cell Circuit

Hello i m hoping someone could help point us in the right direction on this issue.

Ina125 load cell circuit.

The ina125 is a low power high accuracy instrumen tation amplifier with a precision voltage reference. It has two stages of amplifier with reference amplifier. The load cell output needed converting into a digital input using an aanalogue to digital converter adc which i covered in my previous post. Connect load cell pins to the instrumentation amplifier as shown in the schematic diagram.

Demo of the ina125 with a 50kg load cell on a breadboard. Signal black. The ina125 is laser trimmed for low offset. The ina125 is a 16 pin dip dual inline package ic.

We ve gotten the circuit to perform well with one load cell but are having issues getting the expected output with the other. Arduino load cell circuit with texas instruments ina125 instrumental amplifier updated 23 11 13 the circuit is simple enough to create on a breadboard as shown in the picture above. Load cell interfacing schematic. Pin 15 and 4 aren t connected for a start and there were a few other.

Excitation white. Now before i even convert the analogue signalit i want to amplify it. A single external resistor sets any gain from 4 to 10 000. The circuit from the data sheet can be seen below.

Demo of the ina125 with a 50kg load cell on a breadboard. The most difficult part will be connecting the load cell if a pin connector crimping kit is not available. We are using the ina12ua as an amplifier for a load cell bridge measurement circuit with two different load cells.