LME49720 Dual High Performance, High Fidelity Audio Operational Amplifier | TI.com

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Dual High Performance, High Fidelity Audio Operational Amplifier



The LME49720 device is part of the ultra-low distortion, low noise, high slew rate operational amplifier series optimized and fully specified for high performance, high fidelity applications. Combining advanced leading-edge process technology with state-of-the-art circuit design, the LME49720 audio operational amplifiers deliver superior audio signal amplification for outstanding audio performance. The LME49720 combines extremely low voltage noise density (2.7nV/√Hz) with vanishingly low THD+N (0.00003%) to easily satisfy the most demanding audio applications.


  • Easily Drives 600Ω Loads
  • Optimized for Superior Audio Signal Fidelity
  • Output Short Circuit Protection
  • PSRR and CMRR Exceed 120dB (typ)
  • SOIC, PDIP, TO-99 Metal Can Packages
  • Key Specifications
    • Power Supply Voltage Range: ±2.5 to ±17V
    • THD+N (AV = 1, VOUT = 3VRMS, fIN = 1kHz):
      • RL = 2kΩ: 0.00003% (typ)
      • RL = 600Ω: 0.00003% (typ)
    • Input Noise Density: 2.7nV/√Hz (typ)
    • Slew Rate: ±20V/µs (typ)
    • Gain Bandwidth Product: 55MHz (typ)
    • Open Loop Gain (RL = 600Ω;): 140dB (typ)
    • Input Bias Current: 10nA (typ)
    • Input Offset Voltage: 0.1mV (typ)
    • DC Gain Linearity Error: 0.000009%


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Part number Order Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+5V=5, +/-5V=10) GBW (Typ) (MHz) Slew rate (Typ) (V/us) Rail-to-rail Vos (offset voltage @ 25 C) (Max) (mV) Iq per channel (Typ) (mA) Vn at 1 kHz (Typ) (nV/rtHz) Features THD + N @ 1 kHz (Typ) (%) Rating Operating temperature range (C) Package Group Output current (Typ) (mA) Package size: mm2:W x L (PKG) Architecture CMRR (Typ) (dB) Input bias current (Max) (pA)
LME49720 Order now 2     5     34     55     20     No     0.7     5     2.5         0.00003     Catalog     -40 to 85     PDIP | 8
SOIC | 8    
26     8PDIP: 93 mm2: 9.43 x 9.81 (PDIP | 8)
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
Voltage FB     120     72000