LMV321B-TR

Overview

The LMV321B-TR 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 supply 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 supports operation temperatures from -40°C to 125°C and is housed in a SOT-23-5 package.

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 for stable signal processing

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 matches the required package type; the -TR suffix indicates the SOT-23-5 package configuration. Confirm that the operating environment remains within the specified -40°C to 125°C temperature range to ensure reliability. Check datasheet absolute maximum ratings regarding input voltage limits relative to the power supply rails to prevent damage during system integration.

Selection Notes

Select this component for designs requiring low-voltage operation between 2.5V and 5.5V with minimal power consumption. The rail-to-rail I/O functionality makes it suitable for buffering CMOS DACs or ASICs in single-supply systems. Consider the 100mA output capability when driving heavy capacitive loads such as LCD displays. Ensure the application does not exceed the absolute maximum ratings for differential input voltage or supply voltage.

Part Context

The LMV321B-TR belongs to the LMV321B/LMV358B/LMV324B series of CMOS operational amplifiers developed by 3PEAK. This family utilizes proprietary design techniques to achieve stable high-frequency response while maintaining low power usage. The series serves as a plug-in replacement for various commercial op-amps, offering improved input/output range and performance characteristics for consumer electronics and industrial applications.

Replacement Considerations

The datasheet states the series can be used as plug-in replacements for many commercially available op-amps. No specific substitute part numbers are documented in the provided source material.