Hi,
My customers are considering using AD7793.
So I got a question.
#1 What is the accuracy of the AVDD monitor function?
#2 How is the 1/6 attenuation done with the AVDD monitor function done?
Best regards,
Yuya
AD7793
Production
The AD7792/AD7793 are low power, low noise, complete analog front ends for high precision measurement applications. The AD7792/AD7793 contain a low noise...
Datasheet
AD7793 on Analog.com
Hi,
My customers are considering using AD7793.
So I got a question.
#1 What is the accuracy of the AVDD monitor function?
#2 How is the 1/6 attenuation done with the AVDD monitor function done?
Best regards,
Yuya
Hi, Yuya.
1. The AVDD monitor is not accurate. The error is about +/-10% typically. This function is useful to get a coarse reading of the analog power supply. It does not give an accurate value.
2. Using an internal resistor network, the voltage between AVDD and AVSS is divided by 6. This attenuation voltage is then applied to the modulator via the on-chip mux.
Thanks,
Jellenie
Hi, Yuya.
1. The AVDD monitor is not accurate. The error is about +/-10% typically. This function is useful to get a coarse reading of the analog power supply. It does not give an accurate value.
2. Using an internal resistor network, the voltage between AVDD and AVSS is divided by 6. This attenuation voltage is then applied to the modulator via the on-chip mux.
Thanks,
Jellenie
Hi, Jellenie
Thank you for your answer!
Best regards,
Yuya