Paper Info
Title
A Ring Amplifier Based Current Feedback Continuous Time PGA for High Frequency Ultrasound Applications
Abstract
This paper presents a novel wideband continuous time (CT) programmable gain amplifier (PGA) with high power and area efficiency, which is essential for high frequency ultrasound applications. The proposed PGA is a combination of ring amplifier architecture and static fully differential input stage. The current feedback topology is employed making the bandwidth nearly constant. A new amplifying strategy for driving time-interleaved SAR ADC (TI-SAR) is also proposed to address the stability problem of a ring amplifier. The prototype is designed in 0.18μm BCD high-voltage process as part of a pitch-size-matched ultrasound transceiver. The simulation result shows that the PGA achieves 10-40dB gain range and 40MHz bandwidth. The high linearity and low noise performance is also guaranteed with only 4.2mW power consummation.
Year
DOI
Venue
2019
10.1109/MWSCAS.2019.8885387
2019 IEEE 62nd International Midwest Symposium on Circuits and Systems (MWSCAS)
Keywords
Field
DocType
ultrasound transceiver,programmable gain amplifier (PGA),ring amplifier,current feedback amplifier (CFA)
Wideband,Transceiver,Capacitor,Computer science,Linearity,Electronic engineering,Bandwidth (signal processing),Successive approximation ADC,Programmable-gain amplifier,Amplifier
Conference
ISSN
ISBN
Citations 
1548-3746
978-1-7281-2789-7
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Yimin Wu125.20
Jingchao Lan200.68
Shuai Li310220.53
Fan Ye43421.14
Junyan Ren515441.40