Перетворювачі інтегральних сигналів пристроїв вимірювально-діагностичних температурних сенсорів для біомедичних застосувань

The materials of the article present the results of research, which is a promising direction in the construction of high-linear analog devices for systems of measurement, registration and signal processing of biomedical components for the use of push-pull structures. There is a variety of existing models of high-linear devices in the production of leading world-famous companies, in particular Analog Devices, National Semiconductor, Texas Instruments, Linear Technology, ON Semiconductor, Philips, Inetrsil, have the opportunity. further improvement of their characteristics. The work analyzes the primary conversion circuits of highly sensitive differential temperature sensors on transistor structures and applies the optimal operating modes of differential transistor cascades of differential temperature sensors for biomedical devices. Developers of analog-digital systems often face the problem of choosing an amplifier that works with small errors in the current level transmission. The problem of signal matching also remains in the focus of developers’ attention, after which in modern DACs the OA switching scheme is used as the I-V characteristic, and for DACs with VB and VVC voltage output, switching schemes are used. An effective approach to building such analog devices is the use of transimpedance amplifiers. They combine both high linear parameters of direct current and effective characteristics of alternating signal amplification. The order of development of new microelectronic technologies for creating thermal flow sensors, in particular based on the MEMs structure, further development of these sensors for medical diagnostics is promising and solves the problem of increasing the efficiency of the parameters of signal converters.