LMH6609MA-NS

Overview

The LMH6609MA is a high-speed voltage feedback operational amplifier manufactured by National Semiconductor, now part of Texas Instruments. It features a gain bandwidth product of 900 MHz and a slew rate of 1800 V/µs. The device operates on dual supplies ranging from ±3.3 V to ±6 V with a typical supply current of 7 mA per channel. Key electrical specifications include an input offset voltage of 3.5 mV, input bias current of 8 µA, and output short-circuit protection. It provides a large signal bandwidth of 200 MHz and supports an output current of 90 mA.

Feature Summary

• High-speed voltage feedback architecture designed for broadband applications
• Integrated output short-circuit protection for enhanced reliability
• Low noise performance suitable for precision signal processing

Applications

• Video buffering and distribution systems
• Wideband instrumentation and test equipment
• Communication system front-ends

Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments. Ensure the ordering suffix matches the specific package variant required, such as the SOIC-8 (MAX) or DIP-8 (MA). Confirm RoHS compliance status if applicable, as older National Semiconductor parts may differ from current TI NOPB versions. Cross-reference datasheet revisions to ensure pinout and electrical characteristics align with your design requirements.

Selection Notes

Select this component when a high slew rate and wide bandwidth are critical for maintaining signal integrity in fast-changing waveforms. The voltage feedback topology offers stability in standard configurations. Consider the thermal dissipation capabilities of the package relative to the 7 mA quiescent current. Evaluate the input bias current limitations against source impedance requirements to minimize DC errors in precision circuits.

Part Context

The LMH6609 belongs to the LMH series of high-speed amplifiers originally developed by National Semiconductor. This series is characterized by its ability to drive heavy loads while maintaining high frequency response. The transition from National Semiconductor to Texas Instruments means that documentation and support are now managed under the TI brand, although the core technology remains consistent with the original National Semiconductor designs.

Replacement Considerations

• LMH6609MA/NOPB
• LMH6609MAX/NOPB