Lme49720ha

Updated October 6, 2026

Overview

Product sourcing insights & recommendations

24 来源

The LME49720HA is a premium, dual high-fidelity audio operational amplifier packaged in a TO-99 metal can. Renowned in the audiophile community for its ultra-low distortion and high-speed performance, it has reached "collector's status" due to its supply volatility and the shifting semiconductor landscape. Ti Guru3D

Technical & Performance Insights

The LME49720 series is engineered for superior signal fidelity, making it a staple in high-end DACs, preamplifiers, and studio equipment. Ti

* Acoustic Profile: Known for a "clean, neutral, and detailed" sound. The HA (metal can) version is often preferred by enthusiasts over the plastic DIP/SOIC versions for its superior thermal dissipation and potential shielding benefits. Guru3D

* Key Specs: Features an ultra-low THD+N of 0.00003%, a wide supply range of ±2.5V to ±17V, and a high slew rate of ±20 V/µs. Ti

* Sensitivity: It is noted for being sensitive to Radio Frequency Interference (RFI), requiring careful circuit layout to avoid noise issues. Diyaudio

Market Trends & Availability

The market for the LME49720HA is currently characterized by high demand and constrained supply. Diyaudio

* Production Status: Officially listed as ACTIVE by Texas Instruments, but "not recommended for new designs." Ti

* Pricing Volatility: Community reports indicate price spikes of up to 155% in recent periods, driven by stock shortages and the discontinuation of related high-performance metal-can models. Diyaudio

* Counterfeit Risk: Due to its high value and popularity in the "op-amp rolling" community, the market is saturated with counterfeits. Buyers are advised to source only from verified specialized suppliers. Diyaudio

Competitive Landscape & Alternatives

While the LME49720HA remains a favorite, modern alternatives are increasingly common in new designs: Stereonet

* OPA1612: Offers lower noise density (1.1 nV/√Hz vs. 2.7 nV/√Hz) and integrated RFI filtering, though it lacks the classic TO-99 metal can package. Diyaudio

* Discrete Op-Amps (e.g., Sparkos): Audiophiles seeking a more "musical" or "Class-A" sound often upgrade from the LME49720HA to discrete modules, which offer higher current drive. Facebook

The file below includes current market availability and supplier listings for the LME49720HA and compatible high-end modules.

Here is the overview of LME49720HA market trends. You can continue with:

Sources & References

24 sources cited · Verified industry data & reports

LME49720 Dual High Performance, High Fidelity Audio ...

Texas Instruments

Optimized for Superior Audio Signal Fidelity. • Output Short Circuit Protection. • PSRR and CMRR Exceed 120dB (typ). • SOIC, PDIP, TO-99 Metal Can Packages.

LME49720 Dual High Performance, High Fidelity Audio ...

Audeos

This Audio Operational Amplifier achieves outstanding AC performance while driving complex loads with values as high as 100pF. The LME49720 is ...

LME49720HA/NOPB Datasheet National Semiconductor ...

radiolocman.com

The LME49720 is part of the ultra-low distortion, low noise, high slew rate operational amplifier series -40°C to +85°C Supply Voltage Range: ± 2.5 V to ± 17 V

LME49720 Audio Operational Amplifier: Circuit, Price and ...

Utmel

The LME49720 is part of a series of ultra-low distortion, low network noise, and high conversion rate operational amplifiers.

LME49720 data sheet, product information and support

Texas Instruments

TI's LME49720 is a 2-channel, 55-MHz, high-fidelity, high-performance, RRO audio op amp. Find parameters, ordering and quality information.

LME49720 datasheet - Dual High Performance ...

Digchip

The LME49720 is part of the ultra-low distortion, low noise, high slew rate operational amplifier series optimized and fully specified for high performance,