10-bit High-speed CMOS comparator with offset cancellation technique

Author(s):  
Lida Kouhalvandi ◽  
Sercan Aygun ◽  
Gokhan Gunes Ozdemir ◽  
Ece Olcay Gunes
Author(s):  
Mohammad Sharifkhani ◽  
Ehsan Rahiminejad ◽  
Shah M. Jahinuzzaman ◽  
Manoj Sachdev

2013 ◽  
Vol 22 (04) ◽  
pp. 1350018 ◽  
Author(s):  
ZHANGMING ZHU ◽  
HONGBING WU ◽  
GUANGWEN YU ◽  
YANHONG LI ◽  
LIANXI LIU ◽  
...  

A low offset and high speed preamplifier latch comparator is proposed for high-speed pipeline analog-to-digital converters (ADCs). In order to realize low offset, both offset cancellation techniques and kickback noise reduction techniques are adopted. Based on TSMC 0.18 μm 3.3 V CMOS process, Monte Carlo simulation shows that the comparator has a low offset voltage 1.1806 mV at 1 sigma at 125 MHz, with a power dissipation of 413.48 μW.


2013 ◽  
Vol 22 (07) ◽  
pp. 1350061 ◽  
Author(s):  
ZHANGMING ZHU ◽  
WEITIE WANG ◽  
YUHENG GUAN ◽  
SHUBIN LIU ◽  
YU XIAO ◽  
...  

A novel low offset, high speed, low power comparator architecture is proposed in this paper. In order to achieve low offset, both offset cancellation and dynamic amplifier techniques are adopted. Active resistors are chosen to implement the static amplifier circuit to obtain reduction in equivalent input referred offset voltage as well as to increase the circuit speed. The comparator is designed in TSMC 0.18 μm CMOS process. Monte Carlo simulation shows that the comparator has the offset voltage as low as 0.3 mV at 1 sigma at 250 MHz while dissipates 342 μW from a 1.8 V supply.


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