LMH6643QMMX/NOPB

Instrumentation, Op Amps, Buffer Amps Overview

The LMH6643QMMX/NOPB is a dual-channel, low-power operational amplifier from the LMH664x series manufactured by Texas Instruments. It features a gain-bandwidth product of 57 MHz and a slew rate of 135 V/µs. The device operates on a single supply voltage ranging from 2.7 V to 12.8 V or dual supplies up to ±6.4 V. It draws 2.7 mA of quiescent current per channel and provides a rail-to-rail output swing with an output short-circuit current capability of 75 mA. Key electrical parameters include an input offset voltage of 3.4 mV, input bias current of 2.6 µA, and input voltage noise density of 17 nV/√Hz. The component is housed in an 8-pin VSSOP package and supports industrial operating temperatures from -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Dual-channel architecture designed for space-constrained applications requiring high-speed signal processing.
• Rail-to-rail output capability ensures maximum dynamic range utilization across the full supply voltage spectrum.
• Low power consumption profile optimized for battery-operated systems without compromising bandwidth performance.

Instrumentation, Op Amps, Buffer Amps Applications

• ADSL baseband signal processing circuits
• Video buffering and amplification stages
• Portable instrumentation requiring high slew rates

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify that the suffix QMMX indicates automotive qualification (AEC-Q100) and tape-and-reel packaging configuration. Confirm RoHS compliance status as NOPB denotes lead-free and rohs compliant. Ensure the specific grade matches system reliability requirements before finalizing procurement orders.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when dual-channel operation is required alongside rail-to-rail output swings. Compare against single-channel variants like LMH6642 if only one amplifier is needed. Consider the 75 mA output drive capability versus higher current options if driving heavy loads. Verify package availability in VSSOP-8 for PCB layout compatibility.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LMH664x family of low-power, high-speed amplifiers. It shares core specifications with the LMH6642 (single channel) and LMH6644 (quad channel). The 'Q' prefix typically signifies automotive grade qualification, while 'NOPB' confirms environmental compliance. The MMX suffix identifies the specific VSSOP-8 tape and reel packaging format.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Direct functional substitutes within the same family include LMH6642 for single-channel needs or LMH6644 for quad-channel requirements. For non-automotive grades, consider LMH6643MM/NOPB. Verify pinout compatibility and thermal characteristics when transitioning between package types or grades.