LMH6645MA

Instrumentation, Op Amps, Buffer Amps Overview

The LMH6645MA is a dual-channel operational amplifier manufactured by Texas Instruments, utilizing BiCOM technology. It features rail-to-rail input and output capabilities with an integrated shutdown option for power management. The device operates on a supply voltage range of 2.7 V to 12.8 V, drawing a typical quiescent current of 650 µA per channel. Key electrical specifications include a gain-bandwidth product of 55 MHz, a slew rate of 30 V/µs, and an input offset voltage of 4 mV. It supports a maximum dual supply voltage of 6.4 V and functions within a temperature range of -40°C to +85°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Rail-to-rail input and output operation enables full signal swing across the entire supply voltage range.
• Integrated shutdown control allows for significant power reduction when the amplifier is not in use.
• BiCOM process technology provides high-speed performance combined with low quiescent current consumption.

Instrumentation, Op Amps, Buffer Amps Applications

• Portable battery-powered instrumentation requiring low power consumption
• Active filtering circuits in communication systems
• Video buffering and signal conditioning applications

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'MA' against the official datasheet to confirm package type and tape/reel configuration. Ensure the component meets RoHS compliance requirements if mandated by your assembly standards. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when both rail-to-rail I/O capability and low power consumption are critical constraints. The 55 MHz bandwidth suits moderate-speed signal processing tasks. Consider the shutdown feature for systems requiring extended battery life or standby modes. Verify that the SOIC-8 package fits the available PCB footprint.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the LMH664x family of low-power, high-speed operational amplifiers from Texas Instruments. The family includes variants such as the LMH6642, LMH6643, LMH6644, and LMH6655, which offer different channel counts and performance trade-offs. The LMH6645 specifically targets applications needing dual-channel performance with shutdown functionality.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LMH6645MX/NOPB: Pin-compatible alternative with potentially updated manufacturing lot codes.

Instrumentation, Op Amps, Buffer Amps FAQ

Does the LMH6645MA support single-supply operation?

Yes, the device operates on a single supply voltage ranging from 2.7 V to 12.8 V, supporting rail-to-rail input and output.

What is the function of the shutdown pin?

The shutdown pin allows the user to disable the amplifier, reducing the quiescent current to a minimum level to save power during inactive periods.