New Realization of Current Comparator and Its Application as Current Mode Adc
نویسندگان
چکیده
In this paper, two new high speed low power current comparators are proposed. The first comparator uses resistive load amplifiers in gain stage which is modified by including a resistive feedback in the gain stage for better speed. Simulations have been carried out on SPICE using TSMC 0.18um CMOS technology. The results show a resolution of ± 50 nA for both the comparators and an improved delay of 2.68 ns at ±1 μA for second comparator. A 2 bit current mode ADC was designed using the aforementioned comparator and was found to work satisfactorily.
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