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LME49743

ACTIVE

4-channel, 30-MHz, high-fidelity, high-performance audio op amp

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Data sheet

LME49743

ACTIVE
Data sheet Order now

Product details

Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 34 GBW (typ) (MHz) 30 Slew rate (typ) (V/µs) 12 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 1 Iq per channel (typ) (mA) 2.5 Vn at 1 kHz (typ) (nV√Hz) 3.5 Features Premium Sound, Shutdown THD + N at 1 kHz (typ) (%) 0.0001 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.021 Architecture Voltage FB CMRR (typ) (dB) 106 Input bias current (max) (pA) 200000
Number of channels 4 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 34 GBW (typ) (MHz) 30 Slew rate (typ) (V/µs) 12 Rail-to-rail No Vos (offset voltage at 25°C) (max) (mV) 1 Iq per channel (typ) (mA) 2.5 Vn at 1 kHz (typ) (nV√Hz) 3.5 Features Premium Sound, Shutdown THD + N at 1 kHz (typ) (%) 0.0001 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.021 Architecture Voltage FB CMRR (typ) (dB) 106 Input bias current (max) (pA) 200000
TSSOP (PW) 14 32 mm² 5 x 6.4
  • Easily Drives 600Ω Loads
  • Optimized for Superior Audio Signal Fidelity
  • Output Short Circuit Protection
  • 98dB (Typ) PSRR and 106dB (Typ) CMRR
  • TSSOP Package

All trademarks are the property of their respective owners.

  • Easily Drives 600Ω Loads
  • Optimized for Superior Audio Signal Fidelity
  • Output Short Circuit Protection
  • 98dB (Typ) PSRR and 106dB (Typ) CMRR
  • TSSOP Package

All trademarks are the property of their respective owners.

The LME49743 is a low distortion, low noise, high slew rate operational amplifier optimized and fully specified for high performance, high fidelity applications. The LME49743 audio operational amplifier delivers superior audio signal amplification for outstanding audio performance. The LME49743 combines low voltage noise density (3.5nV/√Hz) and THD+N (0.0001%) to easily satisfy demanding audio applications. To ensure that the most challenging loads are driven without compromise, the LME49743 has a slew rate of ±12V/μs and an output current capability of ±21mA.

The LME49743's outstanding CMRR(106dB), PSRR(98dB), and VOS (±0.15mV) give the amplifier excellent operational amplifier DC performance.

The LME49743 has a wide supply range of ±4.0V to ±17V. Over this supply range the LME49743’s input circuitry maintains excellent common-mode, power supply rejection, and low input bias current. The LME49743 is unity gain stable.

The LME49743 is available in 14–lead TSSOP.

The LME49743 is a low distortion, low noise, high slew rate operational amplifier optimized and fully specified for high performance, high fidelity applications. The LME49743 audio operational amplifier delivers superior audio signal amplification for outstanding audio performance. The LME49743 combines low voltage noise density (3.5nV/√Hz) and THD+N (0.0001%) to easily satisfy demanding audio applications. To ensure that the most challenging loads are driven without compromise, the LME49743 has a slew rate of ±12V/μs and an output current capability of ±21mA.

The LME49743's outstanding CMRR(106dB), PSRR(98dB), and VOS (±0.15mV) give the amplifier excellent operational amplifier DC performance.

The LME49743 has a wide supply range of ±4.0V to ±17V. Over this supply range the LME49743’s input circuitry maintains excellent common-mode, power supply rejection, and low input bias current. The LME49743 is unity gain stable.

The LME49743 is available in 14–lead TSSOP.

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Technical documentation

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* Data sheet LME49743 Quad High Performance, High Fidelity Audio Operational Amplifier datasheet (Rev. B) 04 Apr 2013
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017

Design & development

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Simulation model

LME49743 TINA-TI Reference Design (Rev. B)

SNAM196B.TSC (513 KB) - TINA-TI Reference Design
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Simulation model

LME49743 TINA-TI Spice Model (Rev. A)

SNAM197A.ZIP (10 KB) - TINA-TI Spice Model
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TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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