Low-distortion AlGaAs/InGaAs power HFETs with quantum-doped graded-like channels

1997 ◽  
Vol 12 (10) ◽  
pp. 1210-1216 ◽  
Author(s):  
W S Lour ◽  
H R Chen ◽  
L T Hung
Keyword(s):  
Low Distortion

Low Distortion Analog Front-End for Digital Electret Microphone

2013 ◽  
Vol 475-476 ◽  
pp. 1633-1637
Author(s):  
Seung Yong Bae ◽  
Jong Do Lee ◽  
Eun Ju Choe ◽  
Gil Cho Ahn
Keyword(s):  
Audio Signal ◽  
Cmos Technology ◽  
Common Mode ◽  
Electret Microphone ◽  
Front End ◽  
Voltage Variation ◽  
Analog Front End ◽  
Source Follower ◽  
Source Voltage ◽  
Low Distortion

This paper presents a low distortion analog front-end (AFE) circuit to process electret microphone output signal. A source follower is employed for the input buffer to interface electret microphone directly to the IC with level shifting. A single-ended to differential converter with output common-mode control is presented to compensate the common-mode variation resulted from gate to source voltage variation in the source follower. A replica stage is adopted to control the output bias voltage of the single-ended to differential converter. The prototype AFE circuit fabricated in a 0.35μm CMOS technology achieves 68.2dB peak SNDR and 79.9dB SFDR over an audio signal bandwidth of 20kHz with 2.5V supply while consuming 1.05mW.

LOW POWER CONTINUOUS TIME COMMON MODE SENSING FOR COMMON MODE FEEDBACK CIRCUITS

2010 ◽  
Vol 19 (03) ◽  
pp. 519-528 ◽  
Author(s):  
M. PRAMOD ◽  
T. LAXMINIDHI
Keyword(s):  
Continuous Time ◽  
Input Impedance ◽  
Cmos Process ◽  
High Input ◽  
High Input Impedance ◽  
Common Mode ◽  
Standby Power ◽  
Low Distortion ◽  
Simulation Results ◽  
Feedback Circuits

Continuous common mode feedback (CMFB) circuits having high input impedance and low distortion are proposed. The proposed circuits are characterized for 0.18 μm CMOS process with 1.8 V supply. Simulation results indicate that the proposed common mode detector consumes no standby power and CMFB circuit consumes 27–34% less power than previous high swing CMFB circuits.

Low distortion dynamic loudspeaker

1993 ◽  
Vol 93 (4) ◽  
pp. 2260-2260
Author(s):  
Carl Van Gelder
Keyword(s):  
Low Distortion

A High-Power Low-Distortion GaAs HBT Power Amplifier for Mobile Terminals Used in Broadband Wireless Applications

2007 ◽  
Vol 42 (10) ◽  
pp. 2123-2129 ◽  
Author(s):  
Tohru Oka ◽  
Masatomo Hasegawa ◽  
Michitoshi Hirata ◽  
Yoshihisa Amano ◽  
Yoshiteru Ishimaru ◽  
...  
Keyword(s):  
Power Amplifier ◽  
High Power ◽  
Mobile Terminals ◽  
Broadband Wireless ◽  
Wireless Applications ◽  
Low Distortion
Sign in / Sign up

Export Citation Format

Share Document