What the 900 kHz gain bandwidth means for your signal chain
The TSX561AILT is a single-channel general-purpose CMOS op-amp from STMicroelectronics with a 900 kHz gain-bandwidth product. For a non-inverting amplifier with a gain of 10, the closed-loop bandwidth is roughly 90 kHz — enough for sensor conditioning, active filtering, and low-speed ADC driving. The 1.1 V/µs slew rate means the output can swing 5 V in about 4.5 µs, so large-signal waveforms up to roughly 60 kHz at full swing stay within the linear region.
Low input bias current suits high-impedance front-ends
Input bias current is 1 pA typical — this is the CMOS input stage advantage. A photodiode or pH probe with 10 MΩ source impedance sees less than 10 µV of offset error from bias current alone. The 600 µV input offset voltage is the dominant DC error term; for precision DC applications, external trimming or a chopper-stabilized part would be needed, but for general-purpose signal conditioning the TSX561AILT's offset is acceptable.
Supply range and output drive for single-supply designs
Operating from 3 V to 16 V, the TSX561AILT runs on a single lithium cell or a standard 5 V/12 V rail. The output can source or sink 92 mA — enough to drive a small relay coil, an LED, or the input of a successive-approximation ADC without an external buffer. The 250 µA supply current per amplifier keeps the thermal budget low in multi-channel boards.
Industrial temperature range and package for harsh environments
Rated for -40°C to 125°C, the TSX561AILT handles under-hood automotive, industrial oven controls, and outdoor telecom enclosures. The SOT-23-5 package is a standard footprint — rework with hot air at 350°C for 10 seconds per joint is typical. Moisture sensitivity level is not stated but for a standard SOT-23, standard MSL 1 or 2 handling is expected; bake at 125°C for 24 hours if the bag seal is broken.