LMV358B-VR

Overview

The LMV358B-VR is a dual-channel CMOS 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 offset voltage ranging from +1mV to +4mV and a temperature drift of 2 μV/°C. Key electrical specifications include a gain-bandwidth product of 1 MHz, a slew rate of 0.7V/μs, and a high output short-circuit current capability of 100mA. Input bias current is specified at 1pA at 25°C. The component is housed in an MSOP-8 package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• Rail-to-rail input and output operation extending beyond power supply rails
• Low power consumption with 80μA quiescent current per channel
• Positive offset voltage design (+1mV to +4mV) to prevent signal cancellation
• High output drive capability supporting up to 100mA load current

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 systems
• Portable audio amplification and consumer audio sound ports

Procurement Notes

Verify the specific ordering suffix VR corresponds to the MSOP-8 package configuration as defined in the manufacturer's order information table. Confirm that the required transport media matches the tape and reel specifications provided for this part number. Ensure the selected component meets the absolute maximum ratings regarding supply voltage and junction temperature limits during system integration.

Selection Notes

Select the LMV358B-VR when single-supply operation with full rail-to-rail swing is required for low-power applications. The positive offset voltage characteristic makes it suitable for detecting small signals where negative offsets might cause loss of detection. Consider the 1MHz bandwidth and 0.7V/μs slew rate for general-purpose signal conditioning tasks requiring moderate speed and low noise performance.

Part Context

The LMV358B-VR belongs to the LMV321B/LMV358B/LMV324B family of CMOS RRIO op-amps designed by 3PEAK. This series utilizes proprietary patented design techniques to achieve stable high-frequency response while maintaining low power consumption. The LMV358B variant specifically provides two independent amplifier channels in a compact surface-mount package, serving as a drop-in replacement for various commercial general-purpose amplifiers.

Replacement Considerations

The datasheet states the family can be used as plug-in replacements for many commercially available op-amps. No specific substitute part numbers are listed in the official documentation.

FAQ

What is the common-mode input voltage range?

The common-mode input voltage range extends 100mV beyond both the negative (V-) and positive (V+) power supply rails.

How does the positive offset voltage benefit circuit design?

The positive offset voltage (+1mV to +4mV) prevents smaller input signals from being cancelled out due to negative offset voltages, ensuring reliable detection of weak signals.

Is the device capable of driving heavy capacitive loads?

Yes, the LMV358B-VR is very stable and capable of driving heavy capacitive loads, such as those found in LCD displays.