40.12 ZCD Figure 40-190. Falling Edge Response Time vs. VDD Figure 40-191. Rising Edge Response Time vs. VDD Figure 40-192. Zero-Cross Detector Pin Voltage vs. Current (VDD = 5.5V) Figure 40-193. Zero-Cross Detector Pin Voltage vs. Current (VDD = 3.0V) Figure 40-194. Zero-Cross Detector Trip Voltage vs. VDD