Differential Input Current Integrator for Charge Domain Networks

This paper presents an input structure for Charge Domain Networks. In most Charge Domain Filters two inputs are required. Therefore two complementary signal charge packets superposed on a time-invariant bias charge packet are applied to the inputs. In the presented input structure, the charge packets are realised by current integration, providing excellent linear charge-to-voltage conversion for both surface channel and buried channel Charge Coupled Devices.