36-V op amps target industrial uses

The TSB572 and TSB611 single op amps are the first devices produced using ST’s new 40V-ready BiCMOS semiconductor process. This technology delivers superior GBW/Icc efficiency resulting in about five times lower supply current in relation to performance, compared with standard op amps. In addition, low input-offset voltages with temperature drift below 6µV/°C simplify system design, eliminate any need for trimming or calibration, and ensure consistent performance over the specified temperature range -40°C to 125°C.

The TSB572, with rail-to-rail inputs and output, has 2.5MHz gain-bandwidth (GBW) and 1.5mV maximum input-offset voltage. The op amp is stable with capacitive loads and highly resistant to phase reversal. Its broad supply-voltage range, from 4.0V to 36V, allows reliance on specified parameters with a wide variety of power supplies.

The TSB611 has 560kHz GBW and can operate from a supply voltage as low as 2.7V. It is a unity-gain-stable device, and has extremely low input-offset voltage of 1mV as well as frugal operating current of 125µA (max.) at 36V.

Compact package options make ST’s new op amps ideal for use where space is tight, such as in automotive audio systems and Electronic Control Units (ECUs).



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