Title :
High-Voltage CMOS/DMOS Interface Dedicated for Ultrasonic Sensing
Author :
Chebli, Robert ; Sawan, Mohamad
Author_Institution :
Ecole Polytech. de Montreal, Montreal
Abstract :
This paper concerns the design of integrated high-voltage circuits for ultrasonic sensing interface. It includes a DC-DC converter, a drive amplifier/HV operational amplifier, and a tuneable pulse generator. The drive amplifier is based on floating gate technique used to reduce its power and area. A 0.8 mum CMOS/DMOS process with supply voltage of 5 V/400 V is used. An output voltage of up to 200 Vis obtained from the DC-DC converter. Also, the drive amplifier generates spikes up to 148 V, with rise and fall times of 67 ns and 58 ns respectively. The peak current flowing through the transducer element can be as high as 200 mA.
Keywords :
CMOS integrated circuits; ultrasonic imaging; ultrasonic transducers; drive amplifier; floating gate technique; high-voltage CMOS/DMOS interface; integrated high-voltage circuits; ultrasonic sensing interface; CMOS technology; DC-DC power converters; Micromechanical devices; Operational amplifiers; Pulse amplifiers; Pulse generation; Tunable circuits and devices; Ultrasonic imaging; Ultrasonic transducers; Voltage;
Conference_Titel :
Computer Architecture for Machine Perception and Sensing, 2006. CAMP 2006. International Workshop on
Conference_Location :
Montreal, Que.
Print_ISBN :
978-1-4244-0685-2
Electronic_ISBN :
978-1-4244-0686-9
DOI :
10.1109/CAMP.2007.4350356
