HARDWARE-SOFTWARE EMBEDDED SYSTEM OF SIGNAL FREQUENCY SELECTION ON GYRATOR

The work is devoted to the problem of frequency-selective signal conversion in microelectronic sensor devices. It has been shown that path such devices, particular, nodes concept Internet Things, must meet requirements embedded systems using a mixed analog-digital front end. analysis transformation photovoltaic sensors, particular significant parasitic influence extraneous non-informative optical radiation and electromagnetic interference, carried out. SPICE models circuits providing frequency selection on bandwidth filters have synthesized. main approaches hardware-software implementation built-in system with mixed-signal are considered. includes gyrator, software-controlled amplifier, synchronous demodulator, an analog-to-digital converter, digital filter. out platform programmable PSoC chip. integrated 5 LP Family Cypress Semiconductor Corporation used wide range analog front-end nodes, operating amplifiers, comparators, units switching capacitors, reference voltage sources principle forbidden zone, multiplexers, synthesizers, etc. efficiency shown.