TSU112IST

Instrumentation, Op Amps, Buffer Amps Overview

The TSU112IST is a dual-channel CMOS operational amplifier from STMicroelectronics, housed in a MiniSO-8 surface-mount package. It operates within a supply voltage range of 1.5 V to 5.5 V and consumes 900 nA per channel at 3.3 V. Key electrical parameters include a maximum input offset voltage of 150 µV at 25 °C, a gain bandwidth product of 11.5 kHz, and an input bias current of 10 pA. The device features rail-to-rail input and output capabilities, high common-mode rejection ratio (121 dB), and low noise density of 220 nV/√Hz.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low power consumption with sub-micro ampere current draw suitable for battery-powered systems
• High precision performance characterized by low input offset voltage and drift over temperature
• Rail-to-rail input and output stages allowing full signal swing near supply rails
• Robust electrostatic discharge protection rated at 4 kV HBM

Instrumentation, Op Amps, Buffer Amps Applications

• Signal conditioning for electrochemical gas sensors such as CO, O2, and H2S
• Passive infrared (PIR) sensor interfaces in alarm systems
• Wearable electronics and energy harvesting signal processing
• Battery current sensing circuits
• Active RFID tag implementations

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix IST corresponds to the MiniSO-8 package configuration required for your design. Confirm that the component meets RoHS compliance standards applicable to your region. Ensure the operating temperature range of -40 °C to +85 °C aligns with your environmental specifications before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when designing portable devices requiring extended battery life without frequent replacement. It is appropriate for applications needing high accuracy in sensor signal amplification where low noise and minimal input bias current are critical. Consider the MiniSO-8 footprint constraints during PCB layout planning.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the TSU11x family of nanopower operational amplifiers, which includes single-channel (TSU111) and quad-channel (TSU114) variants. These devices share similar electrical characteristics but differ in channel count and package options. The TSU112 specifically provides two channels in a compact MiniSO-8 form factor.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Refer to the TSU101, TSU102, or TSU104 series for designs prioritizing further power savings. For applications requiring increased accuracy, consider the TSZ121, TSZ122, or TSZ124 series instead.