LMH6551QMM/NOPB

Overview

The LMH6551QMM/NOPB is a high-speed differential operational amplifier from Texas Instruments, designed for demanding signal processing applications. It features a gain-bandwidth product of 370 MHz and a slew rate of 2.4 kV/µs. The device operates on a single supply voltage ranging from 3 V to 12 V, with a maximum operating temperature of +125°C. Key electrical specifications include an input offset voltage of 5 mV, input bias current of 10 µA, and output current capability of 65 mA per channel. Common-mode rejection ratio ranges from 72 dB to 80 dB. It is housed in an 8-VSSOP package and meets automotive reliability standards.

Feature Summary

• Automotive-grade qualification ensuring reliability in harsh environments
• High-speed differential architecture for precise signal handling
• Wide single-supply voltage operation flexibility
• Extended industrial temperature range support

Applications

• Automotive infotainment systems
• Video signal conditioning circuits
• Data acquisition front-ends
• Test and measurement instrumentation

Procurement Notes

Verify the specific suffix QMM against the official datasheet to confirm package type and automotive grade status. Ensure the NOPB designation confirms lead-free and RoHS compliance. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Check for any recent lifecycle notices or obsolescence warnings directly from Texas Instruments before finalizing procurement plans.

Selection Notes

Select this component when high bandwidth and differential output are required in space-constrained automotive designs. Compare the 370 MHz bandwidth against lower-speed alternatives if cost is a primary constraint. Evaluate the 8-VSSOP package dimensions against PCB layout requirements. Consider the 125°C maximum junction temperature for thermal management strategies in enclosed automotive enclosures.

Part Context

This part belongs to the LMH6551 family of high-speed differential amplifiers. The 'Q' prefix indicates automotive qualification, while 'MM' specifies the 8-VSSOP package variant. The 'NOPB' suffix denotes a non-plastic body and lead-free finish compliant with environmental directives. This series is engineered for video and data conversion applications requiring high linearity and speed.

Replacement Considerations

Direct substitutes within the same family include LMH6551QMMX/NOPB for tape-and-reel packaging. For SOIC packages, LMH6551MAX/NOPB is available but requires pinout verification. Non-TI alternatives like ADA4857-1YRZ-R7 may offer similar performance but require full electrical parameter matching.