LME49743MTX/NOPBIn StockTexas Instruments
LME49743MTX/NOPB is a high-fidelity quad JFET-input audio op-amp with ultra-low THD+N of 0.00003%, TSSOP-14. From $1.43 at 5000+pcs. In stock, ships globally.
- Manufacturer
- Texas Instruments
- Package
- TSSOP-14
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- LME49743MTX/NOPB Datasheet PDF
- Category
- amplifiers
- Price
- From $1.4300(MOQ 40)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low THD+N: 0.00003% at 1kHz for pristine audio quality
- JFET input stage with high impedance and low bias current
- Wide bandwidth: 55MHz GBW for full audio spectrum performance
- Low noise: 2.5nV/√Hz input voltage noise density
- Quad op-amp in compact TSSOP-14 package
Applications
Designed for professional audio equipment including mixing consoles, studio monitors, and high-end headphone amplifiers. Also used in precision measurement instruments and active crossover networks.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.2 µA |
| Bias Current-Max (IIB) @25C | 0.2 µA |
| Common-mode Reject Ratio-Min | 98dB |
| Common-mode Reject Ratio-Nom | 106dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.04 µA |
| Input Offset Voltage-Max | 1000 µV |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Low-Bias | NO |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage-Nom (Vsup) | -15 V |
| Number of Functions | 4 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 9.5V/us |
| Slew Rate-Nom | 12V/us |
| Supply Current-Max | 14mA |
| Supply Voltage Limit-Max | 36V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Unity Gain BW-Nom | 30000 |
| Voltage Gain-Min | 316000 |
| Wideband | NO |
| Package | TSSOP-14 |
Compliance & Regulatory
| RoHS Status | Compliant |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LME49743MTX/NOPB:
Amplifier, 4 Func, 1000uV Offset-Max, PDSO14
Frequently Asked Questions
What makes LME49743 suitable for audio applications?
The LME49743 features exceptionally low THD+N of 0.00003% at 1kHz, combined with 2.5nV/√Hz voltage noise density. These specifications make it one of the lowest distortion op-amps available, ideal for high-fidelity audio signal paths where transparency is critical.
What is the supply voltage range for LME49743MTX?
The LME49743MTX operates on dual supply from ±2.5V to ±22V (or single supply 5V to 44V). For optimal audio performance, ±15V to ±18V supply rails are recommended, providing maximum headroom and lowest distortion.
How many op-amps are in the LME49743MTX package?
The LME49743MTX contains four independent JFET-input op-amps in a single TSSOP-14 package. This makes it ideal for stereo audio applications with left/right channels plus auxiliary functions in a compact footprint.
What is the bandwidth of LME49743?
The LME49743 has a gain-bandwidth product of 55MHz and a slew rate of 20V/µs. This provides excellent high-frequency response well beyond the audio band, ensuring phase linearity and minimal distortion even at 20kHz and above.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 40+ | $5.0000 | $200.00 |
| 52+ | $4.8333 | $251.33 |
| 70+ | $4.3333 | $303.33 |
| 1000+ | $1.5200 | $1520.00 |
| 2500+ | $1.4600 | $3650.00 |
| 5000+ | $1.4300 | $7150.00 |
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