A 180-VppIntegrated Linear Amplifier for Ultrasonic Imaging Applications in a High-Voltage CMOS SOI Technology.
This brief presents a monolithically integrated fully differential linear HV amplifier as the driver of an ultrasonic transducer. The linear amplifier is capable of transmitting HV arbitrary signals with a very low harmonic distortion, which is suitable for tissue harmonic imaging and other ultrasonic modes for enhanced imaging quality. The amplifier is designed and implemented using the 0.7-μm CMOS silicon-on-insulator process with 120-V devices. The amplifier, when driving a load of 300 pF in parallel with 100 Ω, is capable of transmitting a sine-wave signal with a frequency of up to 4.4 MHz, a maximum signal swing of 180 Vpp, and a second-order harmonic distortion (HD2) of -56 dBc but only dissipating an average power of 62 mW with a 0.1% duty cycle.
Department of Electrical Engineering, Lyle School of Engineering, Southern Methodist University, Dallas, TX 75205 USA.
Kexu
K
Sun
Southern Methodist University, Dallas, TX 75205 USA. He is now with Texas Instruments Incorporated, Dallas, TX 75243 USA.
Zheng
Z
Gao
Department of Electrical Engineering, Lyle School of Engineering, Southern Methodist University, Dallas, TX 75205 USA.
Ping
P
Gui
Department of Electrical Engineering, Lyle School of Engineering, Southern Methodist University, Dallas, TX 75205 USA.
Rui
R
Wang
Texas Instruments Incorporated, Dallas, TX 75243 USA.
Ismail
I
Oguzman
Texas Instruments Incorporated, Dallas, TX 75243 USA.
Xiaochen
X
Xu
Texas Instruments Incorporated, Dallas, TX 75243 USA.
Karthik
K
Vasanth
National Institutes of Health Ultrasound Transducer Resource Center, University of Southern California, Los Angles, CA 90089 USA.
Qifa
Q
Zhou
National Institutes of Health Ultrasound Transducer Resource Center, University of Southern California, Los Angles, CA 90089 USA.
K Kirk
KK
Shung
High voltage (HV); linear amplifier; second-order harmonic distortion (HD2); tissue harmonic imaging (THI); total harmonic distortion (THD); ultrasonic imaging; voltage swing