TPA1811-S5TR

Instrumentation, Op Amps, Buffer Amps Overview

The TPA1811-S5TR is a single-channel, zero-drift operational amplifier manufactured by 3PEAK in an SOT23-5 package. It operates on a supply voltage range of 4 V to 30 V and draws a typical quiescent current of 55 μA at 25°C. The device features a maximum input offset voltage of ±8 μV and an ultra-low offset voltage drift of ±0.01 µV/°C. Key electrical parameters include a gain-bandwidth product of 500 kHz, a slew rate of 0.3 V/μs, and rail-to-rail output capability. It supports industrial operating temperatures from -40°C to +125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Utilizes chopper-stabilized technology to achieve ultra-low offset voltage and negligible temperature drift.
• Delivers high precision with low 1/f noise and excellent DC accuracy suitable for sensitive measurements.
• Provides rail-to-rail output swing capability with class-AB output stage architecture.
• Maintains stable frequency response and low standby power consumption.

Instrumentation, Op Amps, Buffer Amps Applications

• Battery test systems
• Precision sensor interfaces
• Industrial instrumentation
• Motor control circuits
• DC power supply regulation

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix matches the required package configuration. Confirm that the component meets the necessary environmental standards for the intended deployment environment. Ensure proper ESD handling protocols are followed during storage and assembly. Validate compatibility with existing PCB footprint dimensions before finalizing procurement decisions.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when designing circuits requiring high DC precision combined with low power consumption. The zero-drift characteristic makes it ideal for applications where temperature variations could otherwise introduce significant measurement errors. Consider the 500-kHz bandwidth for signal conditioning tasks that do not require extremely high-speed amplification but demand stability over wide temperature ranges.

Instrumentation, Op Amps, Buffer Amps Part Context

The TPA1811 belongs to the TPA181x series of micro-power, zero-drift amplifiers designed by 3PEAK. This family focuses on providing high-precision sensing capabilities while minimizing energy usage. The series includes variants like the dual-channel TPA1812, offering flexibility for different channel count requirements within the same architectural framework.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the TPA1811 handle flicker noise?

The device employs chopper-stabilized technology to significantly reduce 1/f noise, ensuring lower noise levels at DC and low frequencies compared to standard amplifiers.

What is the recommended approach to suppress residual voltage ripple?

Since the chopping technique introduces a residual ripple around 100 kHz, it is recommended to place a post-filter at the amplifier's output if the input signal frequency is close to the chopping frequency.