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A low-voltage high-speed BiCMOS current switch with enhanced-spectral performance

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3 Author(s)
Kwang-Hyun Baek ; Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA ; Myung-Jun Choe ; Sung-Mo Kang

This paper presents a low-voltage high-speed SiGe BiCMOS current switch. Because the proposed current switch has no resistor unlike the previous BiCMOS current switches, it can be used for low voltage ICs. It enhances spectral performance significantly by alleviating nonlinear parasitic capacitance effect, while keeping high-speed and output current accuracy. Simulation result shows that spurious free dynamic range (SFDR) improvement of 10dB is achieved in 12-bit 1GS/s current-mode D/A converter.

Published in:

Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on  (Volume:5 )

Date of Conference:

2002