Various sensors can be integrated into ASICs
light sensors (photodiodes) with varied spectral sensitivities
(e.g. for the regulation of lighting systems)
infrared data receivers, e.g. for IR remote controls
motion detection by Hall sensors
optical encoder IC for measuring rotation
For other sensors (e.g. for pressure, thermal infrared, chemical substances) we can realise sensor amplifiers that serve an external sensor in the best way.