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Texas Instruments LME49726MY/NOPB
- Part No.:
- LME49726MY/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LME49726MY/NOPB.pdf
- Description:
- IC AUDIO 2 CIRCUIT 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,687
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Product details
Overview
LME49726MY/NOPB from Texas Instruments is a dual, rail-to-rail output audio operational amplifier optimized for high-fidelity signal amplification. It delivers 0.00008% THD+N at 1 kHz (5 V supply, 10 kΩ load), 8.3 nV/√Hz input voltage noise at 10 kHz, and ±3.7 V/μs slew rate - enabling low-distortion line driving and DAC I–V conversion in portable audio systems.
For engineers reviewing the LME49726MY/NOPB datasheet, LME49726MY/NOPB pinout, LME49726MY/NOPB application, or LME49726MY/NOPB equivalent, key selection criteria include rail-to-rail output swing within 4 mV of supply rails, 300 mA output drive capability, and guaranteed unity-gain stability across 2.5–5.5 V single-supply operation.
Technical Context
The LME49726MY/NOPB employs a CMOS input stage with 0.2 pA typical input bias current and 0.5 mV max input offset voltage, supporting precision DC-coupled audio paths. Its fully differential internal architecture enables 94 dB channel-to-channel isolation and 120 dB open-loop gain at 10 kΩ load.
Designed for wide-bandwidth audio fidelity, it features a 6.25 MHz gain-bandwidth product and A-weighted integrated noise of 0.7 μV RMS (20 Hz–20 kHz). Output short-circuit protection and thermal shutdown ensure robust operation under dynamic load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| THD+N | 0.00008% typ @ 1 kHz, 3.5 VP-P, 5 V supply - meets Hi-Fi preamp distortion requirements |
| Slew Rate | ±3.7 V/μs typ - supports full-scale 20 kHz sine wave without slew-induced distortion |
| Input Voltage Noise | 8.3 nV/√Hz @ 10 kHz - preserves SNR in microphone preamp gain stages |
| Output Drive | >300 mA @ 5 V - drives 600 Ω professional line loads with <0.001% THD+N |
| Rail-to-Rail Swing | VOUT = VDD − 4 mV / VSS + 4 mV @ 2 kΩ - maximizes dynamic range in low-voltage portable systems |
| Supply Range | 2.5 V to 5.5 V single supply - compatible with Li-ion battery and USB-powered audio devices |
| Quiescent Current | 0.7 mA per amplifier @ 5 V - enables dual-channel operation in power-constrained designs |
Pinout & Package
HVSSOP-8 (DGN0008A) package with exposed thermal pad; 1.1 mm max height, 3.0 × 3.0 mm body, 0.65 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input A | Differential input node for Channel A; high-impedance CMOS input (0.2 pA bias) |
| 2 | Non-Inverting Input A | Differential input node for Channel A; referenced to VCM in single-supply configurations |
| 3 | Output A | Rail-to-rail output capable of sourcing/sinking >300 mA into 2 kΩ |
| 4 | VSS | Negative supply or ground reference; connects to exposed thermal pad for thermal management |
| 5 | VDD | Positive supply (2.5–5.5 V); requires local 10 μF + 0.1 μF bypassing |
| 6 | Inverting Input B | Differential input node for Channel B; electrically isolated from Channel A (94 dB crosstalk) |
| 7 | Non-Inverting Input B | Differential input node for Channel B; independent common-mode range (VSS + 0.1 V to VDD − 1.6 V) |
| 8 | Output B | Rail-to-rail output for Channel B; identical performance specs to Output A |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives 2 kΩ loads to within 4 mV of either supply rail - extends usable output voltage range by ≥15% vs conventional op-amps |
| Ultra-low THD+N | 0.00002% typ @ 1.5 VP-P, 2.5 V supply - enables battery-powered audio with studio-grade linearity |
| High output current | 350 mA peak output @ 5 V - eliminates need for external buffer transistors in headphone driver stages |
| Low 1/f noise corner | 2 kHz - minimizes audible noise modulation in phono preamplifier applications |
| Unity-gain stable | No external compensation required - simplifies PCB layout and reduces bill-of-materials for gain-of-1 buffers |
Applications
| Portable Audio Amplification | Preamplifiers and Multimedia |
|---|---|
Use Scenario: Battery-powered Bluetooth speaker with dual-channel 3 W Class AB output stage. IC Role / Device Role / Timing Role: Dual-channel line driver and DAC I–V converter gain stage. Use Value: Rail-to-rail output swing maximizes headroom from 3.7 V Li-ion supply; 0.00008% THD+N ensures transparent audio reproduction. |
Use Scenario: USB-C audio dongle with integrated ADC/DAC and analog front-end. IC Role / Device Role / Timing Role: ADC front-end signal conditioning and DAC reconstruction filter driver. Use Value: 8.3 nV/√Hz input noise preserves 110 dB SNR of 24-bit converters; 6.25 MHz GBW supports anti-aliasing filter design. |
| Equalization and Crossover Networks | Active Filters |
Use Scenario: 2-way active loudspeaker with digital crossover and analog EQ section. IC Role / Device Role / Timing Role: Dual-channel programmable gain amplifier in biquad filter topology. Use Value: 94 dB channel isolation prevents inter-channel leakage in stereo imaging; 0.5 mV input offset avoids DC bias in passive crossover inputs. |
Use Scenario: High-Q second-order Butterworth low-pass filter for subwoofer management. IC Role / Device Role / Timing Role: Unity-gain stable op-amp in Sallen-Key configuration. Use Value: ±3.7 V/μs slew rate supports clean 100 Hz cutoff without phase distortion; thermal shutdown protects against sustained overload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual audio op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2134PA | Higher 12 nV/√Hz input noise; 8 MHz GBW; no rail-to-rail output (1.5 V headroom) | Better DC precision (100 μV VOS) but lower dynamic range in low-voltage systems | Select when ultra-low input offset is critical and supply > ±5 V is available |
| LM4562MAX | Lower 2.7 nV/√Hz noise; 55 mA output drive; requires dual ±2.5 V supplies | Superior noise performance but insufficient output current for 600 Ω line driving | Select for ultra-low-noise phono preamps where load impedance ≥10 kΩ |
Compared with OPA2134PA and LM4562MAX, the LME49726MY/NOPB uniquely combines rail-to-rail output, 300+ mA drive, and sub-0.0001% THD+N in a single 2.5–5.5 V supply - making it optimal for space-constrained, battery-powered audio systems requiring both linearity and load flexibility.
Availability
LME49726MY/NOPB is available at Aetrix Electronics and suitable for portable audio amplification, preamplifiers and multimedia systems, and equalization and crossover networks requiring stable component supply and long-term production continuity.
Supply support for LME49726MY/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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LME49726MY/NOPB belongs to TI's high-fidelity audio op-amp portfolio, engineered specifically for low-distortion, low-noise signal amplification in battery-powered and space-constrained audio equipment.
FAQ
What is the maximum output current capability of the LME49726MY/NOPB?
The LME49726MY/NOPB delivers up to 350 mA output current at 5 V supply into a resistive load, with guaranteed performance down to 160 mA at 2.5 V. This enables direct driving of 600 Ω professional audio lines and low-impedance headphones without external buffers. The LME49726MY/NOPB includes internal short-circuit protection to prevent damage during overload conditions.
Does the LME49726MY/NOPB support single-supply operation?
Yes, the LME49726MY/NOPB operates from a single 2.5 V to 5.5 V supply, with rail-to-rail output swing and a common-mode input range extending from VSS + 0.1 V to VDD − 1.6 V. For single-supply use, a VCM bias network (e.g., resistor divider to VDD/2) is required at the non-inverting inputs. The LME49726MY/NOPB maintains 0.00008% THD+N and 8.3 nV/√Hz noise under these conditions.
What package type is used for the LME49726MY/NOPB?
The LME49726MY/NOPB uses the HVSSOP-8 (DGN0008A) package: a 3.0 mm × 3.0 mm, 1.1 mm max height thermally enhanced variant of the VSSOP family with an exposed thermal pad. It has 0.65 mm lead pitch and is RoHS-compliant with Sn lead finish. The exposed pad must be soldered to a PCB thermal plane for optimal junction temperature control.
Is the LME49726MY/NOPB unity-gain stable?
Yes, the LME49726MY/NOPB is internally compensated for unity-gain stability across its full operating temperature range (−40°C to +125°C). No external compensation components are required for gain-of-1 configurations such as voltage followers or inverting amplifiers with Rf/Rin = 1. This simplifies design and improves phase margin in high-frequency audio filters using the LME49726MY/NOPB.
What is the input voltage noise density of the LME49726MY/NOPB at 1 kHz?
The LME49726MY/NOPB exhibits 10 nV/√Hz input voltage noise density at 1 kHz, as specified in the Electrical Characteristics table. This value is measured under standard conditions (VDD = 5.0 V, RL = 10 kΩ, TA = 25°C) and reflects the device's low-noise CMOS input architecture. At 10 kHz, the noise drops to 8.3 nV/√Hz, confirming minimal 1/f contribution in the audio band.
LME49726MY/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LME®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Audio
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3.7V/µs
- Gain Bandwidth Product:
- 6.25 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 700µA (x2 Channels)
- Current - Output / Channel:
- 350 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
LME49726MY/NOPB FAQ
1.How can I place an order for LME49726MY/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LME49726MY/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 LME49726MY/NOPB reliable?
The price and inventory of LME49726MY/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LME49726MY/NOPB is usually 5 days.
3.What payment methods are accepted for LME49726MY/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LME49726MY/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LME49726MY/NOPB?
LME49726MY/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LME49726MY/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 LME49726MY/NOPB?
For technical support, including LME49726MY/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LME49726MY/NOPB requirements.
6.How does Aetrix verify that LME49726MY/NOPB is sourced from the original manufacturer or authorized distributors?
All LME49726MY/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 LME49726MY/NOPB meets industry standards.
7.What is the process for return or replacement of LME49726MY/NOPB?
All LME49726MY/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LME49726MY/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 LME49726MY/NOPB part is unused and in its original packaging.
Return procedure for LME49726MY/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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