Part Number: LMP8645 Hi,
After I'm connecting LMP8645 with 3.3v at the V+ and 0v at V-. I can measure 1.5v at +in and -in terminals. According to my understanding I should see a small floating voltage on those terminals but not something as high as 1…
Other Parts Discussed in Thread: LMP8645 , TINA-TI , LMP8646 Hello,
I want to simulate LMP8645 (current sensing amplifier) using TI Tina. In the datasheet it states that SNOM087 is the Tina spice model, but I cannot find the model from Tina. Can you please…
I am working on a project where I need to monitor a current drawn by a 48V BLDC motor. I only have access to the 3 phases of the motors. I am using the evaluation board , which I have modified with a resistor of 20mOhm and a Rg of 47Kohm and the HV version…
Other Parts Discussed in Thread: LMP8645 Hello,
Currently we are evaluating the LMP8645 as a current monitor, so far the IC performs quite good but we have a question.
Since the IC seems to be very accurate we want to sue it to measure voltage as well…
Hi Arnaud,
I think the same is valid as discussed here:
https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1011995/lmp8645-saw-tooth-oscillation-on-the-output-when-connected-to-a-dcdc
Kai
Part Number: LMP8640 Other Parts Discussed in Thread: LMP8645 Can you please provide the PSpice model for LMP8640? It has to be this specific part number - similar devices are not accepted by this customer.
Thank you!
Part Number: INA190 Other Parts Discussed in Thread: INA240 , INA138 , INA216 , INA270 , INA193 , INA203 , INA200 , INA226 , INA170 , LMP8645 , INA223 , INA282 , INA210 , INA199-Q1 , INA180 , INA181 , INA121 What are the design considerations when making small current…
Part Number: INA169 Other Parts Discussed in Thread: LMP8645 , LM324 Hi,
So the issue is that when measuring with the ADC the gain of the INA169 will change according to the sample and hold time. As I understand this has to do with the fact that the INA169…
Part Number: INA250 Other Parts Discussed in Thread: INA210 , INA302 , INA240 , INA180 , INA212 , INA139 , LMP8645 , INA282 , INA270 Good Morning,
I want to mesure 2 types of motor current
Nominal current : 10A
Standby current : 50mA
I choose the INA250 current…
Hello Ganesh,
Thank you for using the TI forum. I have a few questions for you.
Have you tried testing the gain with only a DC signal? If so, do you still have gain problems?
Try measuring the voltage differential right at the IN+ and IN- pins of…