Texas Instruments

LMV7271MGX

LMV7271MGX Description

The LMV7271MGX from Texas Instruments is a general-purpose comparator designed for low-voltage, low-power applications. Packaged in a compact SC70-5 form factor and available in Tape & Reel (TR), this obsolete but still relevant IC offers a balance of precision and efficiency. It operates across a wide supply voltage range (1.8V to 5.5V single or ±0.9V to 2.75V dual), making it versatile for battery-powered and portable electronics. With a quiescent current of just 14µA (max), it minimizes power consumption, while its low input bias current (0.01µA @ 5V) and input offset voltage (4mV max @ 5V) ensure accurate signal comparison.

LMV7271MGX Features

• Ultra-Low Power: 14µA quiescent current extends battery life in portable devices.
• High Noise Immunity: 78dB CMRR and 80dB PSRR reduce sensitivity to supply/ground noise.
• Fast Response: Propagation delay of 2.1µs (max) enables quick decision-making in control systems.
• Wide Voltage Range: Supports single-supply (1.8V–5.5V) and dual-supply (±0.9V–2.75V) configurations.
• Robust Packaging: SC70-5 surface-mount package suits space-constrained designs.
• Low Input Bias: 0.01µA (max) minimizes loading effects on high-impedance sources.

LMV7271MGX Applications

• Battery-Powered Systems: Ideal for voltage monitoring in wearables, IoT sensors, and energy harvesters due to ultra-low power draw.
• Threshold Detection: Used in overvoltage/undervoltage protection circuits and window comparators.
• Signal Conditioning: Enhances accuracy in ADC front-ends or zero-crossing detectors.
• Consumer Electronics: Suitable for touch interfaces, power management, and low-voltage logic level shifting.
• Industrial Control: Reliable performance in noisy environments (e.g., motor control, sensor interfaces) thanks to high CMRR/PSRR.

Conclusion of LMV7271MGX

The LMV7271MGX excels in low-power, precision-comparison tasks, offering a blend of speed, accuracy, and versatility. While marked obsolete, its REACH-unaffected status ensures compliance for existing designs. Its small footprint and low current consumption make it a strong candidate for portable and embedded systems, though newer alternatives may be preferred for forward-looking projects. Engineers valuing noise immunity and wide voltage range in compact designs will find this comparator a pragmatic choice.