LMV321 Low Power Op Amp SC70-5 Package | Texas Instruments

Overview of LMV321 Operational Amplifier

The LMV321 is a single low-voltage, low-power operational amplifier from Texas Instruments, designed for cost-sensitive and space-constrained applications. It delivers reliable signal amplification while minimizing energy consumption—perfect for battery-operated electronics and space-limited designs such as wearables and portable medical instruments.

With a supply range from 2,7V à 5,5V and rail-to-rail output, the LMV321 offers solid performance and design flexibility. Its compact SC70-5 packaging reduces board space without compromising functionality.

Why Choose LMV321 Over Standard Op Amps?

Compared to typical general-purpose op amps, the LMV321 is engineered for modern portable and low-voltage systems. Its low input bias current and low supply current reduce overall power budgets, helping extend battery life. Unlike traditional packages, the SC70-5 footprint allows for denser integration in miniaturized PCBs, especially valuable in consumer electronics and wearable technology.

Additionally, the input offset voltage is tightly controlled, making it suitable for precision analog front-ends in sensor systems or instrumentation. Engineers value LMV321 for its simplicity, cost-efficiency, and predictable performance backed by TI’s proven analog expertise.

Spécifications techniques

• Supply Voltage: 2,7V à 5,5V
• Input Offset Voltage: ±7 mV max
• Quiescent Current: 130 µA typical
• Gain Bandwidth Product: 1 MHz
• Slew Rate: 0.4 V/µs
• Type de sortie : Rail à rail
• Input Bias Current: 45 nA typical
• Température de fonctionnement : -40°C to 125°C
• Package: SC70-5

Applications typiques

• Électronique grand public
• Signal Conditioning
• Wearable Medical Devices
• Portable Instruments
• Battery-Powered Systems

FAQ

What makes LMV321 suitable for portable devices?

Its ultra-low quiescent current and compact SC70-5 package make it ideal for space-constrained, battery-operated electronics where power efficiency is a priority.

Is the LMV321 compatible with 3.3V logic systems?

Yes, it operates effectively from a 2.7V to 5.5V supply, making it fully compatible with 3.3V systems commonly used in embedded and IoT applications.

Can the LMV321 handle rail-to-rail output?

Yes, the LMV321 offers rail-to-rail output which is beneficial for maximizing signal swing, particularly in low-voltage applications.

What is the key benefit of the SC70-5 package?

The SC70-5 is a miniature surface-mount package that saves board space, allowing more functionality in smaller form factors like wearables and handheld instruments.

How does LMV321 ensure long-term reliability?

Being manufactured by Texas Instruments, it benefits from strict quality controls and extensive documentation support, ensuring consistent performance in industrial-grade conditions.