RS122XM

Overview

The RS122XM is a dual-channel CMOS operational amplifier manufactured by Runic Technology. It features a gain-bandwidth product of 150 kHz and a slew rate of 0.05 V/µs. The device operates within a supply voltage range of 2.5 V to 5.5 V, with an input offset voltage of 1.5 mV and an input bias current of 1 pA. Each channel provides an output current capability of 25 mA with rail-to-rail output swing. The component is housed in an 8-MSOP package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• CMOS technology enabling ultra-low input bias current for high-impedance signal interfacing
• Rail-to-rail input and output capabilities maximizing dynamic range under low supply voltages
• Integrated shutdown mode in the S-series variants for power reduction during idle states

Applications

• Sensor interface circuits requiring low power consumption
• Active filter designs in portable electronic devices
• Battery-powered instrumentation systems

Procurement Notes

Verify the specific suffix (e.g., S) to confirm the presence of the shutdown feature, as standard RS122XM units may lack this function. Ensure the 8-MSOP package dimensions align with the target PCB footprint. Confirm RoHS3 compliance status if required by regional regulations. Validate that the 125°C maximum junction temperature meets the thermal design requirements of the final assembly environment.

Selection Notes

Select the RS122XM when a balance between low quiescent current and moderate bandwidth is required for single-supply applications. The CMOS architecture offers superior input impedance compared to bipolar counterparts. Consider the RS122S variant if system-level power management via a logic-controlled shutdown pin is necessary. Evaluate the 150 kHz bandwidth against the signal frequency requirements to ensure adequate phase margin in feedback configurations.

Part Context

The RS122XM belongs to the RS12x family of low-voltage operational amplifiers designed for portable and battery-operated equipment. This series emphasizes an optimal speed-to-power ratio, making it suitable for applications where energy efficiency is critical. The family includes single, dual, and quad channel variations, all sharing similar electrical characteristics and packaging options to simplify multi-channel design implementations.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.