Offset- and gain-compensated and mismatch-free SC delay circuit with flexible implementation

A novel SC delay circuit is presented that is insensitive to the DC offset and finite gain errors of operational amplifiers (OAs) as well as the capacitance ratio mismatch. The effectiveness is illustrated and consolidated by computer simulations. A comparison with typical compensated and uncompensated circuits in terms of magnitude, phase and offset errors is also presented. The circuit is also further extended to realise a wideband and very accurate successive-anticipatory gain compensation scheme and to flexibly implement arbitrary delay with only one OA