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In this paper a DVCC based operational amplifier has been proposed. A pole has been introduced in transfer characteristic of DVCC by an integrated capacitor. The op amp is composed of an on chip DVCC, one integrated NMOS resistor, a capacitor and a CMOS voltage follower. The bandwidth of DVCC op amp can be adjusted by voltage tuning of the resistor. Conventional voltage mode operational amplifiers...
A medium selectivity notch filter has been proposed. The active RC filter has only one operational amplifier and three resistors with one floating capacitor as passive components. Two floating resistors provide the positive feedback and one grounded resistor is used for independent tuning of Q factor. The amplifier pole frequency is used for designing the circuit and amplifier used is in both positive...
A low component sensitivity band-pass filter has been proposed. The filter has only one operational amplifier as active component and three resistors and one grounded capacitor as passive components. Two resistors provide the positive feedback and one resistor is used for independent tuning of Q factor. The capacitor is grounded which is an advantage in integrated technology. The circuit uses the...
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