Title :
A reconfigurable ΔΣ modulator with up to 100 MHz bandwidth using flash reference shuffling
Author :
Caldwell, Thomas ; Alldred, David ; Zhao Li
Author_Institution :
Analog Devices, Inc., Toronto, ON, Canada
Abstract :
A reconfigurable 65nm continuous-time low-pass ΔΣ modulator operates with a sampling frequency from 491 MHz to 1536 MHz, a signal bandwidth from 10MHz to 100 MHz, and a dynamic range of 75.4dB to 62.8 dB, respectively. Reference shuffling in the flash ADC is used to improve the linearity of the flash and DAC, while also increasing the highest sampling rate and bandwidth of the modulator.
Keywords :
analogue-digital conversion; delta-sigma modulation; reference circuits; DAC; bandwidth 10 MHz to 100 MHz; continuous-time low-pass ΔΣ modulator; flash ADC; flash reference shuffling; frequency 491 MHz to 1536 MHz; reconfigurable ΔΣ modulator; size 65 nm; Ash; Bandwidth; Calibration; Clocks; Modulation; Noise; Receivers;
Conference_Titel :
Custom Integrated Circuits Conference (CICC), 2013 IEEE
Conference_Location :
San Jose, CA
DOI :
10.1109/CICC.2013.6658457
