2.1.20 Acquisition Time

The acquisition time specifies the required settling and sampling time for an input channel. It represents the amount of time the sample‑and‑hold circuit in the ADC charges its capacitor with the input analog signal.

The appropriate acquisition time depends on the characteristics of the system and the monitoring requirements of the application. This value has a direct impact on the maximum achievable sampling rate of the system.

The prescaler logic of the AB has a maximum settling time of 10 µs. This settling time is application‑dependent and must be accounted for through the acquisition and hold time configured for each channel. A recommended default acquisition time is automatically inserted by the Analog System Builder when configuring a new Voltage Monitor; however, this value may be reduced at the expense of reduced sampling accuracy.