Title :
A 140 dB equivalent dynamic range receiver interface for an infrared rain-sensing IC
Author :
Krenzke, Rainer ; Ji, Cang
Author_Institution :
Dialog Semicond. GmbH, Kirchheim-Teck, Germany
Abstract :
A receiver interface for automotive infrared rain-sensing application is described which uses multi-scale ΔΣ A/D conversion and digital closed-loop compensation to achieve a dynamic range from 1.5nA to 14mA. It compensates ambient current from 14mA down to 1μA within 56μsec and accommodates an infrared pulse within 32μsec. The receiver is designed to operate synchronized with a transmitter to build an infrared light measurement system. The active area of the receiver is 2.75mm2 including 1mm2 of digital circuitry in 0.35μm CMOS.
Keywords :
CMOS integrated circuits; analogue-digital conversion; automotive electronics; closed loop systems; compensation; delta-sigma modulation; infrared detectors; optical receivers; optical transmitters; CMOS; ambient current; automotive infrared rain-sensing application; current 1.5 nA to 14 mA; digital circuitry; digital closed-loop compensation; equivalent dynamic range receiver interface; infrared light measurement system; infrared pulse; infrared rain-sensing IC; multiscale ΔΣ A/D conversion; size 0.35 mum; Current measurement; Dynamic range; Finite impulse response filter; Noise; Pulse measurements; Receivers;
Conference_Titel :
ESSCIRC (ESSCIRC), 2011 Proceedings of the
Conference_Location :
Helsinki
Print_ISBN :
978-1-4577-0703-2
Electronic_ISBN :
1930-8833
DOI :
10.1109/ESSCIRC.2011.6044930
