The respective sine wave signals are level converting by a high group level converter comprising a capacitor and {HEAD ~ a switch} and by a low group level converter comprising a capacitor and {TAIL ~ a switch} 
The respective sine wave signals are level converting by a high group level converter comprising a capacitor and { HEAD ~ a switch } and by a low group level converter comprising a capacitor and { TAIL ~ a switch }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL