TSM103AIDT

Overview

The TSM103AIDT is a dual operational amplifier and voltage reference integrated circuit manufactured by STMicroelectronics. It features one independent op-amp and a second op-amp with its non-inverting input connected to a fixed 2.5V voltage reference. The device operates within a wide power supply range of 3V to 32V or ±1.5V to ±16V. Key electrical characteristics include a typical input offset voltage of 0.5mV, a unity gain bandwidth of 0.9MHz, and a low supply current of 350µA per op-amp at 5V. The voltage reference offers ±0.4% or ±0.7% precision with a typical output impedance of 0.2Ω and sink current capability from 1mA to 100mA.

Feature Summary

• Integrates one independent operational amplifier and a second amplifier tied to a fixed 2.5V voltage reference for space and cost efficiency.
• Provides a stable 2.5V reference output with high precision and significant sink current capability suitable for various load conditions.
• Supports wide single or dual power supply voltages, accommodating diverse system requirements without complex biasing.

Applications

• Power supply management systems requiring precise voltage monitoring and regulation.
• Data acquisition systems utilizing the integrated reference for signal conditioning.
• Sensor interface circuits where a stable reference voltage is critical for accuracy.

Procurement Notes

Verify the specific suffix 'AIDT' against the manufacturer's latest datasheet to confirm package type, temperature grade, and tape-and-reel specifications. Ensure compatibility with your PCB footprint and reflow soldering profile. Confirm RoHS compliance status as indicated in the official documentation, noting that some older listings may indicate non-compliance. Cross-reference ordering information directly with STMicroelectronics authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a design requires both amplification and a precise voltage reference in a compact form factor. It is suitable for applications needing a 2.5V reference source alongside signal processing capabilities. Consider the 0.9MHz bandwidth and 0.5mV offset voltage for moderate-speed, medium-precision analog tasks. Evaluate the 350µA quiescent current if power consumption is a constraint compared to higher-performance alternatives.

Part Context

The TSM103 series belongs to STMicroelectronics' portfolio of mixed-signal analog integrated circuits designed for general-purpose applications. This family combines operational amplifiers with bandgap voltage references to simplify circuit design. The TSM103AIDT specifically denotes the industrial temperature grade variant in an SOIC-8 package, offering reliability for broader environmental operating conditions compared to commercial grades.

Replacement Considerations

Check for direct pin-compatible replacements such as the TSM103W or other dual op-amp/reference combinations from ST or other manufacturers. Verify that substitute parts match the 2.5V reference tolerance, bandwidth, and supply voltage range. Ensure the alternative package matches the SOIC-8 footprint if board space is constrained.