Implementing Programmable T-Networks Using Xicor Digitally Controlled Potentiometers (XDCPs)Current to Voltage Converters
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A common application of T-networks is current to voltage conversion circuits (I-V converters). These circuits commonly use a T-network in the feedback loop of an inverting amplifier to set the gain of the conversion circuit. When the resistors in the T-network are replaced with XDCPs, a programmable I-V converter results, and the circuit is now on the bus.