Precision 16V op amps eliminate post-assembly trimming

11th May 2016

Nat Bowers

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Combining very high accuracy with a wide operating-voltage range and excellent robustness, a series of precision 16V op amps has been unveiled by STMicroelectronics. The TSX7 series features low input-offset voltage no more than 200µV at +25°C, minimum guaranteed Common Mode Rejection Ratio (CMRR) of 91dB and maximum temperature drift of 2.5µV/°C to eliminate any need for trimming or calibration in the assembled circuit.

This also ensures consistent performance over a wide automotive-grade temperature range from -40 to +125°C. The TSX7 op amps also feature an excellent energy-efficient combination of power consumption and gain bandwidth with maximum leakage of 850µA for 2.7MHz GBW and 9MHz GBW for Gain ≥10.

The devices build on ST’s advanced 18V analogue manufacturing technology and the success of its TSX5, TSX6 and TSX9 series of low-power op amps.

The low input-bias current and the energy-efficient combination of low power consumption and gain bandwidth make the TSX7 series suitable for use in power-constrained sensor-signal-conditioning applications, while the wide supply-voltage range, stability in challenging operating conditions and tolerance of ESD up to 4kV HBM fit well in applications such as industrial equipment, building automation, medical instrumentation, LED lighting and automotive ECUs. In addition, the rail-to-rail input and output functionality allow the TSX7 op amps to be used for low-side and high-side current measurements without limitation.

The TSX7 op amps are in volume production, with prices starting from $0.52 in 1,000 unit quantities.