The twintor in bandstop switched-capacitor ladder filter realisation

A new type of second order building-block called a twintor (TWinned INTegraOR) is introduced for bandstop SC ladder design. The circuit uses two signal channels to directly realise the basic bandstop operators without term cancellations and also reduces the required opamp operation speed by a factor of two. Either single-input or differential-input integrators are allowed, giving flexibility for fabrication