The solutions obtained in designing the integrated multi-element thermal detector, in which the array of the detector elements had been formed from the ferroelectric thin film, have been presented. On the basis of the CAD system the tools parameters of the readout circuit of signals of the pyroelectric detectors have been optimized and a set of documentation for manufacturing the receiver integrated circuit with the design standards of 0.18 microns has been formed. A distinctive feature of the proposed development is the ability to adjust parametrically the conversion coefficients due to polarization of each array element of the ferroelectric in the calibration process.