A programmable circuit for analog signal processing

A BiCMOS field programmable analog cell array with continuous time fully differential analog signal processing is presented. As a counterpart to digital FPGAs can be configured by software and enables fast prototyping and evaluation of analog and mixed signal systems with frequencies up to 100kHz. The device offers different I/O-cells and in the analog core several flexible analog cells including a novel multiplier/amplifier/integrator cell. Measurements on design examples realized with a test version show excellent performance. The influence of the switching arrays in the signal path is neglible.