Some circuits require a constant-current source thatdoesn’t necessarily connect to a power-supply rail or toground. The circuit in Figure 1 shows a simple method forachieving that configuration.
The current differencing buffered amplifier (CDBA) is a derivative of the current feedback operational amplifier (CFOA), originally proposed by Acar C and Ozoguz S. The main advantage of a CDBA is ...
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