Product Overview

LMV321IDBVR is a single-channel low-voltage rail-to-rail output operational amplifier launched by Texas Instruments, a core model of the LMV3xx series. It adopts an SOT-23-5 package (Small Outline Transistor, 5 pins) and is specifically designed for low-voltage, small-space, and low-power scenarios. With 2.7V~5.5V wide supply range, 130μA low quiescent current, and rail-to-rail output as its core advantages, this device also features -40°C~85°C wide-temperature stability and high ESD protection. It is widely used in portable medical equipment, consumer electronics sensors, industrial control modules, and automotive electronic auxiliary systems, serving as a compact op-amp solution that balances performance, size, and cost. It is particularly suitable for LMV321IDBVR portable applications with strict requirements on power consumption and space.

Key Features

• Ultra-Wide Low-Voltage Adaptation: Supports 2.7V~5.5V single-supply operation, which can directly adapt to mainstream low-voltage solutions such as lithium batteries (3.7V) and USB power supplies (5V) without additional voltage stabilization circuits, reducing the complexity of LMV321IDBVR power supply design;
• Extreme Low-Power Design: Typical quiescent current is only 130μA (VCC=5V), with a maximum of 250μA, which is more than 50% lower than traditional op-amps, significantly extending the battery life of LMV321IDBVR low-power devices (such as wireless sensors and portable medical instruments);
• Rail-to-Rail Output Characteristic: Output voltage can approach the power rail (high level is only 10mV typical from VCC, low level is only 60mV typical from GND), maximizing the signal dynamic range and adapting to LMV321IDBVR high-precision signal output scenarios;
• Industrial-Grade Wide-Temperature Stability: Operating temperature range of -40°C~85°C, capable of withstanding extreme environments such as outdoor low temperatures and workshop high temperatures, avoiding performance drift caused by temperature fluctuations, and ensuring the reliability of LMV321IDBVR wide-temperature applications;
• Strong ESD Protection Capability: ESD protection exceeds JESD 22 standards, with 2000V Human-Body Model (A114-A) and 1000V Charged-Device Model (C101), effectively resisting electrostatic shock and reducing the risk of LMV321IDBVR circuit damage.

Technical Specifications

Typical Applications

• In portable medical equipment (such as fingertip oximeters and small ECG monitors), the 130μA low quiescent current of LMV321IDBVR can extend the device's battery life (adapting to 2 AA batteries for power supply). The ultra-small SOT-23-5 package saves PCB space (70% smaller than SOIC packages), and the rail-to-rail output ensures complete amplification of weak medical signals (such as blood oxygen analog signals), meeting the strict requirements of LMV321IDBVR medical portable equipment.
• In the field of consumer electronics sensor modules (such as smart bracelet heart rate sensors and Bluetooth headphone posture detection modules), the 2.7V~5.5V wide voltage of LMV321IDBVR adapts to lithium batteries (3.7V) and USB charging power supplies (5V). The 1MHz unity-gain bandwidth can quickly process high-frequency signals output by sensors, and the low input offset voltage (1.7mV typical) reduces signal errors, improving LMV321IDBVR sensor signal accuracy.
• In industrial control signal conditioning scenarios (such as workshop temperature and humidity sensors and pressure transmitters), the -40°C~85°C wide-temperature range of LMV321IDBVR adapts to high and low temperature environments in workshops. The 63dB high CMRR can filter industrial power noise, and the rail-to-rail output covers the full dynamic range of sensor signals, avoiding signal clipping distortion and ensuring the stability of LMV321IDBVR industrial signal conditioning.
• In smart home equipment (such as smart switch control modules and small environmental monitors), the SOT-23-5 package of LMV321IDBVR adapts to the compact design of equipment (such as the internal PCB of 86-type switches). The 130μA low power consumption reduces standby energy consumption (complying with smart home energy-saving standards), and the wide voltage range is compatible with the 5V power supply after mains step-down and lithium battery backup power supply, meeting the needs of LMV321IDBVR smart home control.
• In the field of automotive electronic auxiliary modules (such as on-board ambient light control and window sensor circuits), the -40°C~85°C wide temperature of LMV321IDBVR can withstand low temperatures in winter and high temperatures in summer inside the vehicle. The 2000V ESD protection resists on-board electrostatic interference, and the low quiescent current (250μA max) reduces on-board battery consumption, adapting to the reliability requirements of LMV321IDBVR on-board auxiliary circuits.

Why Choose LMV321IDBVR ?

• Unmatched Low-Voltage Adaptability: The 2.7V~5.5V wide supply range covers mainstream power supplies for consumer electronics (lithium batteries), industry (5V standard), and medical (2.7V low power), no need for targeted power supply design adjustments, reducing LMV321IDBVR cross-scenario application costs;
• Power Consumption Advantage Outperforms Traditional Op-Amps: Typical quiescent current of 130μA, which is more than 50% lower than traditional op-amps with the same function (such as LM358, 0.7mA quiescent current). Taking a 500mAh lithium battery as an example, powering only LMV321IDBVR can work continuously for 3846 hours (500mAh ÷ 0.13mA ≈ 3846h), extending the battery life of LMV321IDBVR portable devices;
• Ultra-Small Package Saves Space: The SOT-23-5 package size is only 2.9mm×1.6mm×1.1mm, saving 70% PCB area compared to the SOIC-8 package, adapting to micro-devices such as smart bracelets and wireless sensors, and improving the flexibility of LMV321IDBVR compact design;
• Wide-Temperature and High Reliability Resists Risks: -40°C~85°C industrial temperature range, combined with 63dB CMRR and 1000V ESD protection, the failure rate is as low as 0.001%/1000 hours in high/low temperature and high-interference environments, ensuring the stability of LMV321IDBVR harsh environment operation;
• Rail-to-Rail Output Improves Precision: The high-level output is only 10mV from VCC and the low-level output is only 60mV from GND (at RL=10kΩ), which increases the signal dynamic range by 30% compared to non-rail-to-rail op-amps. It is especially suitable for amplifying small-amplitude sensor signals, avoiding precision loss and adapting to LMV321IDBVR high-precision output scenarios.

SUNTOP COMPANY INTRODUCTION

Founded in 2000, Suntop is one of the leading global distributors of electronic components, dedica ted to providing comprehensive procurement and supply chain services to the global electronics manufacturing industry. Our services include distribution, spot trading, PPV cost-saving projects, and inventory management. We not only offer high-quality products but also strive to assist our clients in achieving optimal solutions with minimal time and cost.
As a trusted partner for numerous OEMs, ODMs, CEMs, and EMS companies worldwide, our professional team manages millions of component records from thousands of trading partners across dozens of countries daily through our company database. We maintain close business relationships with major factories and distributors in North America, Europe, and Asia to ensure that our clients stay ahead in a highly competitive market.