LMH6551QMME/NOPB

Overview

The LMH6551QMME/NOPB is a high-speed differential operational amplifier manufactured by Texas Instruments. It features a gain-bandwidth product of 370 MHz and a slew rate of 2.4 kV/µs. The device operates with a supply voltage range of 3 V to 12 V and draws 12.5 mA of quiescent current per channel. Key electrical specifications include an input offset voltage of 5 mV, an input bias current of 10 µA, and a common-mode rejection ratio (CMRR) ranging from 72 dB to 80 dB. It provides an output current of 65 mA per channel and functions within a temperature range of -40°C to +125°C in an 8-VSSOP package.

Feature Summary

• Provides fully differential signal processing for high-speed applications
• Delivers high bandwidth and fast transient response capabilities
• Supports wide single-supply or dual-supply voltage operation
• Maintains stable performance across extended industrial temperature ranges

Applications

• High-speed video buffering and driving
• RF intermediate frequency (IF) signal conditioning
• Data acquisition systems requiring differential inputs
• Test and measurement equipment front-ends

Procurement Notes

Verify the specific suffix 'QMME' against the manufacturer's official datasheet to confirm the exact package variant and tape-and-reel configuration. Ensure the component meets RoHS compliance standards as indicated by the NOPB designation. Cross-reference the ordering part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when a fully differential architecture is required to improve noise immunity and dynamic range. It is suitable for designs needing high slew rates and moderate gain-bandwidth products. Consider the 8-VSSOP package constraints for PCB layout. Compare against the LMH6550 series if higher bandwidth or lower noise density is necessary for the specific application requirements.

Part Context

This device belongs to the LMH6551 family of high-speed differential amplifiers designed for demanding analog signal processing tasks. It serves as a successor to older National Semiconductor differential op-amps, offering improved speed and integration. The QMME variant specifically denotes the automotive-grade qualification and the enhanced small-outline package type within the broader LMH6551 product line.

Replacement Considerations

Direct replacements include LMH6551QMMX/NOPB and LMH6551QMM/NOPB, which share identical electrical characteristics but differ in packaging format.