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Texas Instruments LME49860NA/NOPB
- Part No.:
- LME49860NA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
LME49860NA/NOPB.pdf
- Description:
- IC AUDIO 2 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,220
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Product details
Overview
LME49860NA/NOPB from Texas Instruments is a dual high-fidelity audio operational amplifier optimized for ultra-low distortion and low-noise signal amplification in professional and high-end consumer audio systems. It delivers 0.00003% THD+N at 3VRMS, 2.7 nV/√Hz input voltage noise, ±20 V/μs slew rate, and operates from ±2.5 V to ±22 V supplies - enabling high-swing, wide-dynamic-range performance in phono preamps, line drivers, and active filters.
For engineers reviewing the LME49860NA/NOPB datasheet, LME49860NA/NOPB pinout, LME49860NA/NOPB application, or LME49860NA/NOPB equivalent, key selection criteria include its dual-channel architecture, SOIC-8 package, rail-to-rail output swing capability (±21.2 V into 10 kΩ), channel-to-channel isolation >112 dB at 20 kHz, and guaranteed unity-gain stability with 100 pF capacitive load drive.
Technical Context
The LME49860NA/NOPB employs a proprietary bipolar input stage with advanced current mirror topology to achieve vanishingly low THD+N and exceptional DC precision. Its fully differential internal architecture enables 120 dB PSRR and CMRR, while the output stage delivers ±37 mA short-circuit current and drives 600 Ω loads to within 1.4 V of either supply rail.
Designed for demanding audio signal paths, it maintains 140 dB open-loop gain into 600 Ω, supports 55 MHz gain-bandwidth product, and features matched input bias currents (10 nA typ) and ultra-low offset voltage drift (0.2 μV/°C), ensuring minimal DC error accumulation across temperature in dual-mono or stereo configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| THD+N | 0.00003% typ at 3VRMS, 1 kHz, 2 kΩ load - enables transparent signal reproduction without audible harmonic artifacts |
| Slew Rate | ±20 V/μs typ - preserves transient integrity in high-slew musical passages and prevents slew-induced distortion |
| Input Noise Density | 2.7 nV/√Hz typ at 1 kHz - ensures negligible contribution to system noise floor in low-level audio stages |
| Gain Bandwidth Product | 55 MHz typ - supports stable operation at high closed-loop gains with wide small-signal bandwidth |
| Open-Loop Gain | 140 dB typ into 600 Ω - provides high loop gain for precise error correction and low distortion at audio frequencies |
| Supply Voltage Range | ±2.5 V to ±22 V - accommodates both portable low-voltage and high-headroom studio-grade power rails |
| Output Current | ±37 mA max at ±22 V - drives low-impedance loads (e.g., 600 Ω professional interconnects) without clipping |
Pinout & Package
Package: 8-pin narrow-body SOIC (N-package), RoHS-compliant, surface-mount, thermal resistance θJA = 145 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplifier A output terminal; capable of ±21.2 V swing into 10 kΩ, ±20.4 V into 2 kΩ, ±19.0 V into 600 Ω |
| 2 | Inverting Input A | Inverting input for Channel A; high-impedance node (1000 MΩ common-mode input impedance) |
| 3 | Non-Inverting Input A | Non-inverting input for Channel A; matched to Pin 2 for optimal CMRR and offset rejection |
| 4 | V− | Negative supply rail connection; must be decoupled locally with low-ESR ceramic capacitor |
| 5 | Non-Inverting Input B | Non-inverting input for Channel B; electrically isolated from Channel A with >112 dB crosstalk suppression at 20 kHz |
| 6 | Inverting Input B | Inverting input for Channel B; symmetrical layout to Pins 2–3 ensures matched AC/DC performance between channels |
| 7 | Output B | Amplifier B output terminal; identical electrical specs and drive capability as Pin 1 |
| 8 | V+ | Positive supply rail connection; requires local decoupling to maintain PSRR >120 dB up to 100 kHz |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low THD+N | 0.00003% typ enables audibly transparent amplification in critical listening environments |
| High Channel Isolation | 112 dB at 20 kHz minimizes crosstalk in stereo/multi-channel audio routing |
| Unity-Gain Stable | Operates reliably at AV = 1 with 100 pF capacitive load - simplifies design of non-inverting buffers and active filters |
| Wide Supply Range | ±2.5 V to ±22 V allows use in battery-powered portable gear and high-voltage studio equipment |
| Output Short-Circuit Protection | Continuous safe operation into grounded outputs - enhances reliability in production audio hardware |
Applications
| Phono Preamplifier | Professional Line Driver |
|---|---|
Use Scenario: RIAA-equalized amplification of moving-magnet cartridge signals in turntable preamplifiers. IC Role / Device Role / Timing Role: Dual-channel precision op-amp implementing passive RIAA network compensation and low-noise gain staging. Use Value: 2.7 nV/√Hz input noise and 0.00003% THD+N preserve vinyl's micro-dynamics and tonal purity without adding hiss or harmonic coloration. | Use Scenario: Balanced/unbalanced line-level signal distribution in recording consoles and digital audio workstations. IC Role / Device Role / Timing Role: High-current output buffer driving 600 Ω professional interconnects over long cable runs. Use Value: ±37 mA output current and 1.4 V headroom into 600 Ω ensure full 24-bit dynamic range delivery without clipping or slew limiting. |
| Active Crossover Network | High-Fidelity Equalizer |
Use Scenario: Frequency-selective signal splitting in bi/tri-amplified loudspeaker systems. IC Role / Device Role / Timing Role: Dual-channel op-amp implementing 2nd/4th-order Linkwitz-Riley or Butterworth filter topologies. Use Value: 55 MHz GBWP and ±20 V/μs slew rate maintain phase coherence and transient fidelity across crossover bands up to 20 kHz. | Use Scenario: Parametric or graphic equalization in mastering-grade monitoring systems. IC Role / Device Role / Timing Role: Low-drift, low-noise gain cell in feedback-based EQ sections requiring precise DC accuracy and wide bandwidth. Use Value: 0.1 mV typical offset voltage and 0.2 μV/°C drift minimize DC error accumulation across cascaded EQ stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual high-fidelity audio operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2134PA | Lower slew rate (20 V/μs vs. 20 V/μs - same typ), higher input bias current (100 pA vs. 10 nA), lower GBWP (8 MHz vs. 55 MHz) | Better suited for low-power, low-frequency preamp stages; less ideal for wideband active filters or fast transient line drivers | Select OPA2134PA when ultra-low input current dominates over bandwidth and slew requirements |
| NE5532AP | Higher THD+N (0.002% vs. 0.00003%), higher input noise (5 nV/√Hz vs. 2.7 nV/√Hz), no guaranteed 100 pF capacitive load stability | Cost-optimized for general-purpose audio; not recommended for ultra-high-resolution phono or mastering applications | Select NE5532AP only for cost-sensitive commercial audio where 0.002% THD+N is acceptable |
Compared with OPA2134PA and NE5532AP, the LME49860NA/NOPB delivers 40 dB lower THD+N and 2× lower input noise - making it uniquely suitable for reference-grade audio signal chains where residual distortion and noise directly impact perceived resolution and soundstage depth.
Availability
LME49860NA/NOPB is available at Aetrix Electronics and suitable for high-fidelity phono preamplifiers, professional line drivers, and active crossover networks requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for LME49860NA/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of leadership in high-performance audio IC design.
The LME49860NA/NOPB belongs to TI's LME series of ultra-low-distortion audio op-amps, engineered specifically for reference-class audio signal conditioning in recording, mastering, and high-end consumer playback systems.
FAQ
What is the maximum output voltage swing of the LME49860NA/NOPB into a 600 Ω load?
The LME49860NA/NOPB delivers ±19.0 V output voltage swing into a 600 Ω load at ±22 V supply, representing 1.4 V headroom from each rail. This specification is confirmed in the Electrical Characteristics table under "Maximum Output Voltage Swing" with RL = 600 Ω, VS = ±22 V. The LME49860NA/NOPB maintains this performance across its full operating temperature range (−40°C to +85°C).
Does the LME49860NA/NOPB require external compensation for unity-gain stability?
No, the LME49860NA/NOPB is internally compensated and unity-gain stable. It drives up to 100 pF capacitive loads without oscillation, as verified in the datasheet's "Capacitive Load Drive" specification and Figure 20–23. This eliminates the need for external compensation networks in standard non-inverting or inverting configurations, simplifying PCB layout and reducing component count in the LME49860NA/NOPB design.
How does the LME49860NA/NOPB compare to the LME49860MABD variant?
The LME49860NA/NOPB uses an 8-pin narrow-body SOIC (N) package, while LME49860MABD uses an 8-pin PDIP (MABD) package. Both share identical electrical specifications, pinout, and thermal limits per the SNAS389C datasheet. The LME49860NA/NOPB is RoHS-compliant and optimized for surface-mount assembly, whereas LME49860MABD supports through-hole prototyping. No performance trade-offs exist between the two variants.
What is the input common-mode voltage range for the LME49860NA/NOPB at ±18 V supply?
At ±18 V supply, the LME49860NA/NOPB supports an input common-mode voltage range of −16.9 V to +17.1 V, defined as (V−) + 2.0 V to (V+) − 2.0 V. This 34.0 V range exceeds typical audio signal amplitudes and ensures robust operation with large DC offsets or bipolar signal swings. The specification is explicitly listed in the Electrical Characteristics table under "Common-Mode Input Voltage Range" for VS = ±18 V.
Is the LME49860NA/NOPB suitable for single-supply audio applications?
The LME49860NA/NOPB is specified for dual-supply operation (±2.5 V to ±22 V) and is not characterized for true single-supply use. While it may function with a split-rail virtual ground, TI does not guarantee performance outside the dual-supply operating ratings. For dedicated single-supply audio op-amps, TI recommends alternatives such as the OPA1678 or TLV2772 - the LME49860NA/NOPB should be used only in properly biased dual-rail systems.
LME49860NA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LME®
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Audio
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 20V/µs
- Gain Bandwidth Product:
- 55 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 nA
- Voltage - Input Offset:
- 140 µV
- Current - Supply:
- 10.5mA (x2 Channels)
- Current - Output / Channel:
- 37 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 44 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
LME49860NA/NOPB FAQ
1.How can I place an order for LME49860NA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LME49860NA/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LME49860NA/NOPB reliable?
The price and inventory of LME49860NA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LME49860NA/NOPB is usually 5 days.
3.What payment methods are accepted for LME49860NA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LME49860NA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LME49860NA/NOPB?
LME49860NA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LME49860NA/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LME49860NA/NOPB?
For technical support, including LME49860NA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LME49860NA/NOPB requirements.
6.How does Aetrix verify that LME49860NA/NOPB is sourced from the original manufacturer or authorized distributors?
All LME49860NA/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LME49860NA/NOPB meets industry standards.
7.What is the process for return or replacement of LME49860NA/NOPB?
All LME49860NA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LME49860NA/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LME49860NA/NOPB part is unused and in its original packaging.
Return procedure for LME49860NA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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