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This work demonstrates a multi-Mode CT ΔΣ ADC in 14nm FinFET Intel Technology. The proposed converter makes use of a novel 5-bit partial DEM technique at 1.25GHz that, in conjunction with an offset current dumping solution, drastically reduces current and area. The ADC reaches a measured DR of 73/71 dB while consuming 8/12 mW for the 9/50 MHz BW modes, respectively.
This paper presents a multimode-mode filtering ΔΣ-modulator for receivers with reconfigurable digitally enhanced blocker rejection. The required signal to noise ratio of the signal of interest is typically much lower than the required DR due to also received interfering signals. Therefore, it is of interest to build the ADC in the receiver with a high blocker tolerance, to reduce its required signal...
A system for measuring ambient light as well as proximity of a reflective object is presented. A new technique of ambient light disturbance cancellation in proximity mode is proposed, enabling high accuracy measurements over a wide range of backlight. The chip, built in a 0.25μm CMOS technology, is capable of measuring ambient light intensities with a resolution better than 0.25lx at a 16klx full-scale...
A second order continuous time multibit (4bit) DeltaSigma-ADC for voice coding is implemented in a 65nm CMOS process. The dynamic range (DR) is 95dB over the voice bandwidth of 20-20 000Hz. Furthermore, by using a feed back architecture the need of an anti aliasing filter is eliminated. The input operational amplifier is chopped to eliminate flicker noise and offset. These improvements give way to...
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