38.11 ZCD Figure 38-163. Falling Edge Response Time vs. VDD Figure 38-164. Rising Edge Response Time vs. VDD Figure 38-165. Zero-Cross Detector Pin Voltage vs. Current (VDD = 5.5V) Figure 38-166. Zero-Cross Detector Pin Voltage vs. Current (VDD = 3.0V) Figure 38-167. Zero-Cross Detector Trip Voltage vs. VDD