A 20-bit dynamic range CMOS A/D converter for ionization chambers

We present the design of a wide dynamic-range CMOS A/D interface circuit for ionization chambers, able to digitize input charge of both polarities over six decades, to operate in a radioactive environment, and foreseen working without calibration. The circuit is based on a current-to-frequency conversion, where the converting circuit reconfigures itself depending on the input level to provide an output code every 40 μs. Simulation results of its implementation in a 0.25 μm CMOS are presented, showing its operation over a 120dB dynamic range. The simulated circuit consumes less than 33 mW from a 2.5-V supply. © 2011 IEEE.


Published in:
2011 7th Conference on Ph.D. Research in Microelectronics and Electronics, 125-128
Presented at:
2011 7th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME), Madonna di Campiglio, Italy, 3-7 07 2011
Year:
2011
Publisher:
IEEE
ISBN:
978-142449137-7
Keywords:
Laboratories:




 Record created 2011-11-07, last modified 2018-09-13


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)