Philip,
Selecting an ADC can be about resolution, and we have a lot of 24-bit ADCs, but there are usually other criteria that is important. Does the input need gain? What is the input range? How fast do you need to collect the data? How many input channels…
Vilius,
Welcome to the forum! You should make sure that your power supply to the ADS1211 is clean, and that your supply inputs to the ADS1211 are bypassed with caps. You can check to see how noisy the Arduino supply is with an oscilloscope.
You should…
Florian,
Welcome to the forum! The values placed into the OCR and FCR registers after the SELFCAL will always be used no matter which mux input channel is selected. However, using the same values for each of the mux inputs may introduce some error as…
Other Parts Discussed in Thread: ADS1211
Hi all, I have trouble with ADS1211 and I don't understand what the problem is.I'll be glad if you help me. I'm using interrupt driven ads1211 in my project. At startup everything works well but after…
Other Parts Discussed in Thread: ADS1211 Hi Bob,
I have a question about DRDY: that is, what the waveform of DRDY is during and after reset (the FIGURE 27 of the data sheet)?
In my application, after receiving a command (special character) from…
Mehdi,
This is a rather substantial jump that could be related to input noise, supply noise, or reference noise. I can't really tell what the vertical scale is so it is hard to determine how much variation there is in the measurement. Is the vertical…
Other Parts Discussed in Thread: ADS1148 , ADS1248 I have a question about Full-Scale Range (FSR) on page 10 of ADS1210/11, it says
"For example, when the converter is configured with a 2.5V reference and is placed in a gain setting of 2, the full…
Other Parts Discussed in Thread: ADS1211 , PGA280 , ADS1259 Hi
I have been using the ADS1211 for some years very successfully with +/-10V inputs using the bias facility.
I have hit a wall though with speed, I need single shot conversions as an option…
James,
I notice from your schematic that you have no load caps on the crystal and no bypass caps on the supply pins of the ADS1211.
Are you sure that the crystal has started to oscillate in the situations where you get the unexpected readings? It…
