7.3.13 Synchronize Using the RT/CLK Pin

The RT/CLK pin is used to synchronize the converter to an external system clock. See Figure 25. To implement the synchronization feature in a system connect a square wave to the RT/CLK pin with on time at least 75 ns. The square wave amplitude at this pin must transition lower than 0.6 V and higher than 1.6 V. The synchronization frequency range is 300 kHz to 2000 kHz. The rising edge of the PH will be synchronized to the falling edge of RT/CLK pin.

Figure 25. Synchronizing to a System Clock