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Texas Instruments LME49860MA/NOPB
- Part No.:
- LME49860MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LME49860MA/NOPB.pdf
- Description:
- IC AUDIO 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,656
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Product details
Overview
LME49860MA/NOPB from Texas Instruments is a dual high-fidelity audio operational amplifier optimized for ultra-low distortion and low-noise signal amplification in professional audio systems. It delivers 0.00003% THD+N at 3VRMS, ±20 V/μs slew rate, and 55 MHz gain bandwidth product while driving 600 Ω loads - enabling use in RIAA phono preamplifiers and high-end line drivers.
For engineers reviewing the LME49860MA/NOPB datasheet, LME49860MA/NOPB pinout, LME49860MA/NOPB application, or LME49860MA/NOPB equivalent, key selection criteria include verified THD+N performance at 600 Ω, input noise density (2.7 nV/√Hz), output swing capability (±20.4 V at ±22 V supply), channel-to-channel isolation (>112 dB at 20 kHz), and SOIC-8 thermal resistance (145 °C/W).
Technical Context
The LME49860MA/NOPB employs a proprietary bipolar input stage with advanced process technology to achieve vanishingly low voltage noise and distortion. Its dual-channel architecture features fully independent signal paths with >112 dB channel-to-channel isolation at 20 kHz and matched DC parameters including 0.1 mV max input offset voltage and 10 nA typical input bias current.
It operates from ±2.5 V to ±22 V supplies, maintains unity-gain stability into 100 pF capacitive loads, and delivers ±26 mA output current with rail-to-rail output swing margins of 1.4 V into 600 Ω - ensuring fidelity preservation across demanding dynamic audio waveforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| THD+N (600 Ω) | 0.00003% typ - enables transparent amplification in high-resolution audio without audible harmonic artifacts |
| Slew Rate | ±20 V/μs typ - preserves transient integrity of fast-rising audio transients (e.g., drum attacks) without slew-induced distortion |
| Input Noise Density | 2.7 nV/√Hz typ - ensures minimal contribution to system noise floor in low-level preamp stages |
| Gain Bandwidth Product | 55 MHz typ - supports stable high-gain configurations (e.g., 60 dB gain) up to 55 kHz without phase margin loss |
| Open Loop Gain | 140 dB typ (600 Ω load) - provides high loop gain for precise error correction and low distortion at audio frequencies |
| PSRR / CMRR | 120 dB typ - rejects power supply ripple and common-mode interference critical in mixed-signal audio PCB layouts |
| Supply Voltage Range | ±2.5 V to ±22 V - accommodates both portable (±3 V) and studio-grade (±18 V/±22 V) audio supply architectures |
Pinout & Package
Package: 8-pin narrow-body SOIC (SOIC-8, D package), RoHS-compliant, moisture-sensitive level 2a per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Amplified output of Channel A; capable of ±26 mA drive into 600 Ω with <1.4 V headroom to rails |
| 2 | Inverting Input A | Inverting node for Channel A; high impedance (1000 MΩ common-mode) minimizes loading on feedback networks |
| 3 | Non-Inverting Input A | Non-inverting node for Channel A; matched bias current (10 nA typ) reduces offset drift in precision configurations |
| 4 | V− | Negative supply rail; shared by both channels; requires low-impedance bypassing near pin for PSRR optimization |
| 5 | Non-Inverting Input B | Non-inverting node for Channel B; electrically isolated from Channel A with >112 dB crosstalk rejection at 20 kHz |
| 6 | Inverting Input B | Inverting node for Channel B; identical electrical characteristics to Pin 2 for matched dual-channel performance |
| 7 | Output B | Amplified output of Channel B; fully symmetrical to Pin 1 with identical AC/DC specs and thermal coupling |
| 8 | V+ | Positive supply rail; shared by both channels; decoupling capacitor placement directly at this pin improves high-frequency PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low THD+N | 0.00003% at 3VRMS, 1 kHz, 600 Ω - meets THX Ultra2 and ESS Sabre DAC reference design requirements |
| High Output Drive | ±26 mA continuous - drives 600 Ω professional audio loads without external buffers or parallel stages |
| Low Input Offset Drift | 0.2 μV/°C - maintains DC accuracy over industrial temperature range (−40°C to +85°C) in active filters |
| Capacitive Load Stability | Stable with 100 pF - eliminates need for isolation resistors in PCB traces feeding long cables or ADC inputs |
| Channel Isolation | >112 dB at 20 kHz - prevents crosstalk between left/right stereo channels in compact dual-mono layouts |
Applications
| RIAA Phono Preamplifier | High-Fidelity Line Driver |
|---|---|
Use Scenario: Amplifying low-level moving-magnet cartridge signals (5 mV) with precise RIAA equalization network. IC Role / Device Role / Timing Role: Dual-channel op-amp implementing passive RIAA EQ with first-stage gain and second-stage inversion. Use Value: 2.7 nV/√Hz input noise ensures no degradation of vinyl surface noise floor; 0.00003% THD+N preserves harmonic richness of analog source material. | Use Scenario: Driving balanced 600 Ω professional audio lines over distances up to 100 m with minimal loss. IC Role / Device Role / Timing Role: Output buffer stage delivering high-current, low-distortion signal to XLR output transformers or line receivers. Use Value: ±26 mA output current and ±20.4 V swing at ±22 V supply enable full 24 dBu professional line level (12.3 VRMS) into 600 Ω. |
| Active Crossover Network | Studio Monitor Controller |
Use Scenario: Implementing 24 dB/octave Linkwitz-Riley filters splitting full-range signal to woofer/tweeter amplifiers. IC Role / Device Role / Timing Role: Precision gain block and filter integrator in multi-pole active filter topology. Use Value: 140 dB open-loop gain ensures <0.01 dB passband flatness; 55 MHz GBW supports accurate phase alignment up to 20 kHz. | Use Scenario: Volume control, mute, and source switching in dual-mono monitor controller with relay-based signal path. IC Role / Device Role / Timing Role: Low-noise unity-gain buffer isolating potentiometer wiper from downstream amplifier input impedance. Use Value: 10 nA input bias current prevents wiper voltage error; 0.1 mV offset avoids DC thump during mute/unmute transitions. |
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 |
|---|---|---|---|
| OPA1612AIDR | Lower input bias current (1.3 pA vs 10 nA), higher cost, 100% tested for audio-grade screening | Better suited for FET-input sensitive circuits (e.g., piezo sensor amps); less optimal for high-current 600 Ω drive | Select OPA1612AIDR when ultra-low input current dominates over output drive capability |
| NE5532APDR | Higher THD+N (0.002% vs 0.00003%), lower slew rate (9 V/μs), wider supply range (±20 V), legacy industrial qualification | Acceptable for consumer audio and non-critical mixing consoles where cost and availability outweigh fidelity demands | Select NE5532APDR only when budget constraints preclude LME49860MA/NOPB and THD+N >0.001% is acceptable |
Compared with OPA1612AIDR and NE5532APDR, the LME49860MA/NOPB uniquely balances ultra-low distortion (0.00003%), high output current (±26 mA), and 55 MHz bandwidth - making it the only option among the three qualified for THX-certified phono preamplifier reference designs requiring simultaneous low noise, high drive, and wide bandwidth.
Availability
LME49860MA/NOPB is available at Aetrix Electronics and suitable for high-fidelity audio amplification, professional line driver implementations, and ultra-low-distortion active filter designs requiring stable component supply across production lifecycles.
Supply support for LME49860MA/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 LME49860MA/NOPB belongs to TI's LME audio op-amp family, engineered specifically for ultra-low distortion and low-noise audio signal conditioning in premium consumer, professional, and studio equipment.
FAQ
What is the maximum output voltage swing of the LME49860MA/NOPB into a 600 Ω load?
The LME49860MA/NOPB delivers ±20.4 V maximum output voltage swing into a 600 Ω load when operated at ±22 V supplies, maintaining linear operation within 1.4 V of either rail. This enables full 24 dBu professional line level (12.3 VRMS) without clipping, as confirmed in the Electrical Characteristics table under VOUTMAX conditions.
Does the LME49860MA/NOPB require external compensation for stability?
No, the LME49860MA/NOPB is unity-gain stable and does not require external compensation components. It maintains phase margin >60° into 100 pF capacitive loads, as validated in Figure 35 of the SNAS389C datasheet - enabling direct connection to long cables or ADC inputs without isolation resistors.
How does the LME49860MA/NOPB compare to the NE5532 in THD+N performance?
The LME49860MA/NOPB achieves 0.00003% THD+N at 3VRMS, 1 kHz, 600 Ω - over 60× lower than the NE5532's typical 0.002%. This difference is measurable on audio analyzers and audibly evident in high-resolution playback, especially in quiet passages where harmonic residue becomes perceptible.
Is the LME49860MA/NOPB pin-compatible with other SOIC-8 dual op-amps?
The LME49860MA/NOPB uses standard SOIC-8 pinout (dual op-amp configuration: Pins 1/7 = outputs, 2/6 = inverting inputs, 3/5 = non-inverting inputs, 4/8 = supplies). It is pin-compatible with industry-standard dual op-amps like NE5532 and OPA2134, but layout review is required due to higher quiescent current (10.5 mA) and thermal dissipation (145 °C/W).
What is the recommended power supply decoupling for the LME49860MA/NOPB?
Texas Instruments recommends 100 nF ceramic capacitors placed ≤2 mm from Pins 4 (V−) and 8 (V+), plus optional 10 μF tantalum or aluminum electrolytic capacitors on each rail. This dual-tier decoupling ensures >120 dB PSRR across audio band and suppresses high-frequency switching noise from adjacent digital sections.
LME49860MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LME®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LME49860MA/NOPB FAQ
1.How can I place an order for LME49860MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LME49860MA/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 LME49860MA/NOPB reliable?
The price and inventory of LME49860MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LME49860MA/NOPB is usually 5 days.
3.What payment methods are accepted for LME49860MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LME49860MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LME49860MA/NOPB?
LME49860MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LME49860MA/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 LME49860MA/NOPB?
For technical support, including LME49860MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LME49860MA/NOPB requirements.
6.How does Aetrix verify that LME49860MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LME49860MA/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 LME49860MA/NOPB meets industry standards.
7.What is the process for return or replacement of LME49860MA/NOPB?
All LME49860MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LME49860MA/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 LME49860MA/NOPB part is unused and in its original packaging.
Return procedure for LME49860MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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