Part Number: ADS8405 1. Is there any requirements for the power sequencing of ADS8405 since there are two power supplies (VA and VDB) ? I can't find any information about that in the datasheet.
2. Can I place capacitors on REFOUT pin even if I use an…
Hi, We use an ADS8405i in the design and for some boards we can't get fullscale input for the ADC. It saturates near 1V instead of 4V. I have verified the Vref that is exactly 4.096V and the 5V is OK. I just see a small ripple of 150 mV on the 3.3V for…
Other Parts Discussed in Thread: ADS8405 , ADS8406 , THS4031 Hi:
I have many legacy boards that use an 16-bit ADS8401 sampling at 1 MHz that is performing poorly as far as its SNR. The PDS says SNRAD of the ADS8401 is about 85dB. In our legacy system…
Hello Tim, folks, I have another (!) question for you: As I told you, I am (also) driving ADS8405. I've narrowed down to this: Acquisition time is 150ns. CFLT = QFLT [pC] / (0.05 VFSR) [V] = 500 pF Let's choose CFLT = 1nF CFLT > 20 * ADC Input capacitance…
