Other Parts Discussed in Thread: ADS1298,
Tool/software:
Dear Sir/Madam,
I am planning to introduce the ADS1298RIZXGT chip in my design and provide dual supply for the analog part (AVDD = +2.5 & AVSS = -2.5V) and +1.8V for the digital supply (DVDD = 1.8V).
I want to do that because my MCU has to work with 1.8V digital logic.
According to the Table shown in Section 7.3 of the datasheet ("Recommended Operating Conditions"), this power supply scheme is allowed.
Indeed, in my case AVDD - AVSS = (+2.5) - (-2.5) = +5V is less than 5.25V, and AVDD – DVDD = (+2.5) - (+1.8) = +0.7V, which is inside the range (-2.1V up to 3.6V).
Could you please confirm that this power supply scheme will properly work without facing any issues?
Finally, since the DVDD is +1.8V, I want to introduce an oscillator that provides externally the 2.048MHz clock at 1.8V digital logic. I chose the model KC3225K2.04800C1GE00 from KYOCERA AVX.
You can find this oscillator in the link below:
Could you please let me know whether that component is fine for providing externally the 2.048MHz clock to the ADS1298 chip?
Thank you very much in advance for your time.
With kind regards,
Konstantinos
