My application is required to switch between channel 1 and AD7794 internal temperature sensor.
channel 1 is AIN1(+) – AIN1(–) is configured as gain = 1, buffer on, unipolar mode; external reference applied between REFIN1(+) and REFIN1(–) is reference source for the ADC.
follow by internal temperature sensor
gain = 1, buffer on, bipolar mode, by default internal voltage refer 1.17
My question is what is the minimum switching time between channel 1 and internal temperature sensor, and where I can find the relevant document ?? (what I can achieve now is 25 mili second delay switching, however it is too long for my application)