TSB182IST

Instrumentation, Op Amps, Buffer Amps Overview

The TSB182IST is a dual-channel precision operational amplifier from STMicroelectronics featuring a chopper-stabilized architecture for very low offset voltage and drift. It operates on a supply voltage range of 4 V to 36 V with rail-to-rail output capability. Key electrical parameters include a maximum input offset voltage of 20 µV at 25 °C, a gain bandwidth product of 3 MHz, and a typical supply current of 650 µA per channel. The device offers high ESD tolerance (4 kV HBM), EMI hardened inputs, and an extended operating temperature range from -40 °C to 125 °C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Chopper-stabilized architecture ensures very low input offset voltage and virtually zero drift over temperature changes.
• Rail-to-rail output stage allows signal swing close to both supply rails.
• Built-in EMI filters minimize output errors caused by electromagnetic interference.
• High electrostatic discharge protection with 4 kV Human Body Model tolerance.

Instrumentation, Op Amps, Buffer Amps Applications

• Industrial sensor interfaces
• Automotive systems requiring AEC-Q100 qualification
• Low-side current sensing in power management

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package marking and date code against the official datasheet revision DS14357 Rev 5. Confirm that the ordering suffix IST corresponds to the SO8 or MiniSO8 package variant as defined by STMicroelectronics. Ensure compatibility with the required supply voltage range and thermal dissipation limits for the target application environment.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high DC accuracy and stability are critical without frequent calibration. The TSB182IST is suitable for applications requiring wide supply voltage operation up to 36 V and robust performance in electrically noisy environments due to its EMI hardened design. Consider the 650 µA typical current consumption relative to the required speed and precision specifications.

Instrumentation, Op Amps, Buffer Amps Part Context

The TSB182IST belongs to the TSB18x series of very high precision operational amplifiers designed for industrial and automotive markets. It shares architectural similarities with the single-channel TSB181 but provides two independent channels in one package. This series addresses the need for space-saving solutions and reduced PCB costs through its compact packaging options.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

For lower current consumption, consider the TSB611 or TSB612. For lower speed requirements, the TSB621 or TSB622 may be appropriate. If rail-to-rail inputs are needed instead of outputs, evaluate the TSB571 or TSB572. For higher speed and precision with rail-to-rail inputs, review the TSB711 or TSB712.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the chopper architecture affect the output signal?

The chopper architecture converts low-frequency errors like DC offset and 1/f noise to the chopping frequency, which is then filtered out. This results in very low offset drift but may introduce small residual ripple or converging steps during fast transients.

What is the recommended decoupling strategy for the TSB182IST?

It is strongly recommended to place a 0.1 µF capacitor as close as possible to the supply pins to reduce electromagnetic interference and reject ripple generated by the internal chopper modulation.

How should unused channels be handled in the TSB182?

Unused channels must be properly connected to avoid internal oscillations. They can be configured as a buffer, set to a specific gain with inputs within the common mode range, or used as a comparator with current-limiting resistors.