Part Number: INA330 Hello, I am using the INA330 for set-point temperature control application. I wanted to confirm a few aspects of my understanding of the datasheet.
Does the ±12.5uA maximum guaranteed current correspond to pin 7 (Io) or pin 8 (Vo…
Part Number: INA330 Hi,
Customer is having an odd issue with the INA330,details below.
"I have a thermistor with a nominal value of around 17K (22K at 25 deg. C). The thermistor is implanted inside of a mouse nose, so when the mouse breaths, the temperature…
Part Number: INA330 My application requires the thermistor to be positioned remotely from the PCA by approximately 2' and connected by a cable. How does this play into the error analysis with the position of Rset on the PCA?
Hi Sravani,
Unfortunately, we do not have a spice model available for this device. You can find all available spice models in the link below. Maybe you can narrow down your search here to a device that already has an existing model which you could…
Part Number: INA330 To maintain the desired 1.6 kHz filter for the larger temperature range, the value of Rg will have to be substantially reduced. Is there a lower limit specified for Rg?
Part Number: INA330 Page 7 has the following text:
Values less than 2kΩ can cause the voltage excitation buffers to become unstable
I'm stuck using the ERTJ0EM103J as it is mounted in a buy part. I need to resolve temperatures as high as 120C but…
Hello Jochen,
Sorry we have been slow to answer; there has been a lot going on.
The INA330 datasheet only assures that the Current Offset Error Change Over Temperature from +25°C to +85°C, or +25°C to –40°C, will be no greater than ±40 nA. It doesn…
Hello Tom,
First let me run through some calculations:
I2=Vexcite/Rset=1V/10k=100uA. This current does not exceed the maximum output current fo the excitation buffers (125uA), so there is no problem here.
At 0C (32F) a thermistor should be ~32…
Sonoki-san,
Thank you for this additional information. Still, however, there are important details about the application that are not yet provided. How is the output of the INA330 used? Is it used in a set-point controller as shown in figure 1 of the…
Other Parts Discussed in Thread: INA330 I've been using an INA330 as the basis for a high-stability temperature controller. The circuit mainly works very well. However, when I use a long-ish (~2m), screened cable to connect the thermistor to the board…
