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LM3886T - Overture ™ Audio Power Amplifier Series High-Performance 68W Audio Power Amplifier with Mute

View LM3886TF: High-Performance 68W Audio Power Amplifier with Mute

LM3886TF: High-Performance 68W Audio Power Amplifier with Mute

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National Semiconductor
Jameco Part no. 320670
Manufacturer no. LM3886TF
Catalog 152 , page 9
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LM3886T - Overture™ Audio Power Amplifier Series High-Performance 68W Audio Power Amplifier with Mute

The LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4Ω load and 38W into 8Ω with 0.1% THD+N from 20Hz-20kHz.

The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, under-voltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.

The LM3886 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0V. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.


  • 68W cont. avg. output power into 4Ω at VCC = ±28V
  • 38W cont. avg. output power into 8Ω at VCC = ±28V
  • 50W cont. avg. output power into 8Ω at VCC = ±35V
  • 135W instantaneous peak output power capability
  • Signal-to-Noise Ratio ≥ 92dB
  • An input mute function
  • Output protection from a short to ground or to the supplies via internal current limiting circuitry
  • Output over-voltage protection against transients from inductive loads
  • Supply under-voltage protection, not allowing internal biasing to occur when |VEE|+ |VCC| ≤ 12V, thus eliminating turn-on and turn-off transients
  • 11-lead TO-220 package
  • Wide supply range 20V - 94V


  • Component stereo
  • Compact stereo
  • Self-powered speakers
  • Surround-sound amplifiers
  • High-end stereo TVs

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  • Specification Value
    Power Supply TypeSingle|Dual
    Minimum Single Supply Voltage20V
    Output Signal TypeSingle
    Typical Single Supply Voltage18V
    Maximum Single Supply Voltage84V
    Typical Dual Supply Voltage±12V|±15V|±18V|±24V|±28V
    Maximum Input Bias Current1uA@±28V
    Maximum Input Offset Voltage10mV@±28V
    Amplifier TypeClass-AB
    Maximum Load Resistance8Ohm
    Minimum CMRR85dB
    Maximum Power Dissipation125000mW
    Maximum Quiescent Current85mA@±28V
    Maximum Output Current11500mA(Typ)
    Typical Output Power x Channels @ Load68Wx1@4Ohm
    Minimum Dual Supply Voltage±10V
    Typical PSRR120dB
    Typical Quiescent Current50mA@±28V
    Specification Value
    Maximum Dual Supply Voltage±42V
    Rail to RailNo
    Total Harmonic Distortion Noise0.03%@4Ohm@60W
    Minimum Operating Temperature-20°C
    Maximum Operating Temperature85°C
    MountingThrough Hole
    Product Height10.64mm
    Product TypeAudio Amplifier
    Product Width4.5mm
    Product Length20.02mm
    Typical Gain Bandwidth Product8MHz
    Typical Voltage Gain115dB
    Input Signal TypeDifferential
    Output Type1-Channel Mono

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