Part Number: ADS1226 Hello,
We have an issue with random conversion and autocalibration times after startup.
In our design, we have a recovery mechanism that powers down the device for short duration (can be betweeen 200ms and 600ms).
The sequence…
Part Number: ADS1226 Hi,
The datasheet does not specify how to acquire two channels consecutively.
We need to convert calibrated data from 2 channels in high resolution mode as fast as possible.
So the sequence we need to achieve is to have a…
Martin,
Just to be sure that I understand, by adding an initial calibration, the problem goes away? I don't know why that would be any different. The calibration ensures that the internal calibration registers are set correctly. This would include…
Part Number: ADS1226 Hello,
It is not very clear for us when the self-calibration is needed.
We are using now the ADS1226 in high-resolution mode with the 2 channels active and performing a self-calibration each time we read a channel.
This gives…
Part Number: ADS1226 Other Parts Discussed in Thread: ADS1220 Hi Team,
ADS1226 has two modes, high resolution and high speed mode. If customer select high speed mode the resolution could not be keep at 24bit, right? If so, what is the resolution at…
Other Parts Discussed in Thread: ADS1226 , ADS1220 Hi TI Engineers and all,
We are using ADS1226 in our flow meter application.
Problem:
1. The conversion result is wrong and keeps wrong after power-up(confirmed with the multimeter). if power…
Other Parts Discussed in Thread: ADS1226 We wish to operate the ADS1226 converter with constant 2.4 - 3.0Vdc on the DVDD supply, and have the AVDD (5.0Vdc) switched off when the device is put into standby mode between samples.
Will the Self Calibration…
Hi Alex,
I'm not that familiar with the ARM peripherals, but it would seem to me that the statements to get the data will send the request to the hardware peripheral faster than the data can be collected. I would think that there needs to be a transfer…
Nadine,
On power up the ADC issues a calibration. If the calibration is based on a meaningless reference, all data taken after the reference is applied will be meaningless. Issuing a calibration once the reference is applied should correct the output…
Hi Dov,
I think 20us is a little short. It is possible that the state machine is still in early stages and the transition of DRDY/DOUT may be in an initialization state and not truly signalling end of conversion. There is not any specific characterization…
