| Title |
Analog Front-End IC Design for Vehicle Ultrasonic Sensor |
| Authors |
권기백(Kibaek Kwon) ; 배찬규(Chankyu Bae) ; 김면식(Myunsik Kim) ; 손지원(Jiwon Son) ; 김혜인(Hein Kim) ; 양희관(Heuikwan Yang) ; 최중호(Joongho Choi) |
| DOI |
https://doi.org/10.5573/ieie.2021.58.9.13 |
| Keywords |
Ultrasonic sensor; Analog front-end IC; Capacitor sharing; ADAS; Vehicle semiconductor |
| Abstract |
In this paper, the analog front-end (AFE) IC for vehicle ultrasonic sensor is designed. In the AFE, low-noise amplifier (LNA) with the input-referred noise of 5.8nV/Hz0.5 within the signal band, programmable-gain amplifier (PGA) which can control the gain from 30.5dB to 87.5dB, offset-cancellation circuit for relieving large offset voltage problem due to high gain characteristics, capacitor-sharing scheme for decreasing the area needed for high-pass filtering are included. The chip is fabricated in a 180nm CMOS process. IC measurement and distance measurement results are included. The core area occupies 1.5mm2 and total power consumption is 8.1mW for a single supply voltage of 1.8V. |