A precision infrared detection device is provided, which is capable of measuring a wide range of temperature having a simple constitution, reduces the influence due to the dispersion among the operating points, and enables the cost down. The system includes an optical data communication path and a plurality of optical taps, each optical tap optically coupling a respective computer system component to the optical data communication path. The connector piece is then thinned by stamping with a given force. The gated integrator stores a value representative of the sensor output on a node that may then be sampled by an analog-to-digital converter.