Current Conveyor Based Window Comparator Circuits

Table 1

Comparative features of proposed circuits with existing works.

Reference	Building block used	Number of diodes	Accuracy of window detection	Supply voltage used (V)	Number of output levels for out-of-window signal
[4, 13]	2 opamps	2	Poor	±10 typical	1
[10]	4 logic gates	—	Poor	3	1
Proposed (Figure 2)	1 EXCCCII	2	Good; (50 mV)	±1.25	1
Proposed (Figure 8)	1 EXCCCII	2	Good; (50 mV)	±1.25	2