Title :
A 43 mW single-channel 4GS/s 4-bit flash ADC in 0.18 μm CMOS
Author :
Sheikhaei, Samad ; Mirabbasi, Shahriar ; Ivanov, André
Author_Institution :
British Columbia Univ., Vancouver
Abstract :
A low-power small-area single-channel 4GS/s 4-bit flash ADC in 0.18 μm CMOS is presented. The entire ADC is implemented using CML blocks. To enhance the speed, both analog (comparators) and digital (encoder) parts of the ADC are fully pipelined. Furthermore, a reformulation for the encoder logic functions is introduced to reduce the wiring delay in the layout. The ADC achieves a figure of merit of 2.14 pJ/conversion-step. The ADC area including the resistor ladder is 0.06 mm2 and the power consumption is 43 mW when supplied with 1.8 V.
Keywords :
CMOS integrated circuits; analogue-digital conversion; comparators (circuits); current-mode logic; low-power electronics; CMOS; analog comparators; current-mode logic; digital encoder; encoder logic functions; flash analog-to-digital converter; power 43 mW; size 0.18 μm; voltage 1.8 V; wiring delay; word length 4 bit; Calibration; Circuits; Clocks; Delay; Energy consumption; Latches; Logic functions; Optical arrays; Resistors; Sampling methods;
Conference_Titel :
Custom Integrated Circuits Conference, 2007. CICC '07. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-0786-6
Electronic_ISBN :
978-1-4244-1623-3
DOI :
10.1109/CICC.2007.4405746
