The AD7792/3/4/5 can use an external clock. What is the frequency range of the external clock?
Although most customers use the internal 64 kHz clock, the AD7792, AD7793, AD7794 and AD7795 have the capability of being driven from an external clock. The parts can use an external clock from 60 kHz to 70 kHz and still meet the datasheet specifications. While the parts continue to function with clock frequencies outside this range, performance is not guaranteed.
When I use it at low frequency, will there be a problem?
If there is the place where a characteristic worsens other than a noise reduction rate, please tell me.
（I want to use it in 52KHz）
We don't recommend to operate the part beyond it's specification as it cannot guarantee its performance. So it is important to refer your design based on the part requirements and specifications. May I know what is your application and why do you need to use 52KHz?
I use this Temperature measurement.
I specifications output data rate,So i will use 52KHz.
We have not tested the AD779x with a 52 kHz master clock. The part will continue working with this frequency and could meet the datasheet specification. However, we cannot guarantee this.
The output data rate and filter notch are both dependent on the master clock frequency. So, if the output data rate is 16.6sps when a 64 kHz master clock is used, the output data rate will change to 16.6 x (52/64) = 13.4875 sps for the 52kHz master clock. Similarly, a notch at 8.3 Hz (64 kHz master clock) will move to 8.3 x (52/64) = 6.74 Hz.
Retrieving data ...