LMV321B-CR

Overview

The LMV321B-CR is a single-channel operational amplifier manufactured by 3PEAK. It operates within a supply voltage range of 2.5V to 5.5V and draws a quiescent current of 80μA per channel. The device features rail-to-rail input and output capabilities, with an input common-mode voltage range extending 100mV beyond the power rails. Key electrical specifications include a gain-bandwidth product of 1MHz, a slew rate of 0.7V/μs, and a maximum output short-circuit current of 100mA. Input offset voltage ranges from +1mV to +4mV with a temperature drift of 2 μV/°C. The component is housed in a SOT353 (SC70-5) package and supports an operating temperature range of –40°C to 125°C.

Feature Summary

• Rail-to-rail input and output capability with extended common-mode range
• Low power consumption with 80μA quiescent current per channel
• High output drive capability supporting up to 100mA load current
• Excellent EMI suppression performance and low noise characteristics

Applications

• Active filters and ASIC input or output amplifiers
• Sensor interface circuits for smoke, gas, and environmental sensors
• Portable instruments and mobile devices
• Motor control and portable audio amplification

Procurement Notes

Verify the specific ordering suffix 'CR' corresponds to the SOT353 (SC70-5) package configuration as defined in the manufacturer's order information table. Confirm that the Moisture Sensitivity Level (MSL) rating is MSL 3, consistent with the latest datasheet revision A.0. Ensure compatibility with standard tape and reel transport media quantities specified for this package type.

Selection Notes

Select the LMV321B-CR when a single-channel amplifier with rail-to-rail I/O is required in a compact SC70-5 footprint. This part is suitable for designs needing high output current capability and low power consumption under single-supply conditions. Consider the positive offset voltage specification (+1mV to +4mV) during circuit design to ensure signal accuracy requirements are met.

Part Context

This component belongs to the LMV321B/LMV358B/LMV324B series of CMOS operational amplifiers developed by 3PEAK. The series utilizes proprietary design techniques to achieve stable high-frequency response and low distortion. While the LMV321B-CR represents the single-channel variant, the family includes dual and quad configurations available in various packages such as SOP, TSSOP, and MSOP.

Replacement Considerations

The datasheet indicates the series can serve as plug-in replacements for many commercially available op-amps to reduce power and improve performance. Verify pinout compatibility and electrical parameter alignment before substituting other single-channel RRIO amplifiers.