LME49990MA/NOPB

Instrumentation, Op Amps, Buffer Amps Overview

The LME49990MA/NOPB is an ultra-low distortion, ultra-low noise operational amplifier from the Overture E-Series. It features a typical input noise density of 0.9 nV/√Hz and a maximum THD+N of 0.00002%. The device provides a gain bandwidth product of 110 MHz and a slew rate of ±22 V/μs. It operates on supply voltages ranging from ±5V to ±18V with a quiescent current of approximately 9 mA at ±15V. The unit includes output short-circuit protection and can drive loads down to 600Ω.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-low noise performance with a 1/f corner frequency of 43 Hz
• High open-loop gain of 135 dB for exceptional linearity
• Robust output stage capable of driving 600Ω loads
• Integrated output short-circuit protection

Instrumentation, Op Amps, Buffer Amps Applications

• Ultra high quality audio signal processing
• Active filters
• Preamplifiers
• Spectrum analyzers
• Ultrasound preamplifiers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package type (SOIC-8) against the design requirements. Confirm that the obsolete status does not impact long-term availability needs. Ensure proper handling procedures are followed due to limited built-in ESD protection. Review the latest datasheet revision for any updates to electrical characteristics or application hints before finalizing the design.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when extremely low noise and distortion are critical. It is suitable for applications requiring high slew rates and wide bandwidth. Consider the ±5V to ±18V supply range compatibility. Evaluate the need for external compensation if driving large capacitive loads exceeding 100pF. Verify thermal dissipation capabilities within the SOIC-8 package constraints.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to Texas Instruments' Overture E-Series, designed specifically for high-fidelity audio and precision measurement applications. It combines vanishingly low THD+N with high dynamic performance. The series is engineered to exceed the resolution limits of standard commercial test equipment, making it ideal for professional-grade signal conditioning.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LME49990MAX/NOPB is listed as an alternative package variant in the same family.