What is the output data update rate when the AD719x is used with a master clock other than 4.9152 MHz?
The devices have numerous output data rates with a range from 4.7 Hz to 4.8 kHz. These values are determined by the internal clock. When the master clock frequency is changed, the output data rate will scale with the applied clock. For example, the default output data rate equals 50 Hz when the master clock is 4.9152 MHz. If the master clock is reduced to 2.5 MHz, then the output data rate is reduced to (2.5/4.9152) x 50 = 25.43 Hz.
Changing the output data rate will also affect the filter notches. When the output data rate equals 50 Hz, a notch is placed at 50 Hz. If the master clock frequency is reduced to 2.5 MHz, the 50 Hz notch to moved to 25.43 Hz.
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