50-mW Ultra Low-Voltage Stereo Headphone Audio Amplifier


Product details


Output power (W) 0.05 Analog supply (Min) (V) 1.6 Analog supply (Max) (V) 3.6 PSRR (dB) 72 Rating Catalog Operating temperature range (C) -40 to 85 Headphone channels Stereo Volume control No Shutdown current (ISD) (uA) 0.05 Architecture Class-AB Iq per channel (Typ) (mA) 0.8 open-in-new Find other Headphone amps

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Headphone amps


  • 50-mW Stereo Output
  • Low Supply Current...0.75 mA
  • Low Shutdown Current...50 nA
  • Pin Compatible With LM4881 and TPA102(1)
  • Pop Reduction Circuitry
  • Internal Midrail Generation
  • Thermal and Short-Circuit Protection
  • Surface-Mount Packaging
    • MSOP and SOIC
  • 1.6-V to 3.6-V Supply Voltage Range

(1) The polarity of the SHUTDOWN\ pin is reversed.

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The TPA6100A2D is a stereo audio power amplifier packaged in either an 8-pin SOIC package or an 8-pin MSOP package capable of delivering 50 mW of continuous RMS power per channel into 16- loads. Amplifier gain is externally configured by a means of three resistors per input channel and does not require external compensation for settings of 1 to 10.

The TPA6100A2D is optimized for battery applications because of its low supply current, shutdown current, and THD+N. To obtain the low-supply voltage range, the TPA6100A2D biases BYPASS to VDD/4. A resistor with a resistance equal to RF must be added from the inputs to ground to allow the output to be biased at VDD/2.

When driving a 16- load with 45-mW output power from 3.3 V, THD+N is 0.04% at 1 kHz, and less than 0.2% across the audio band of 20 Hz to 20 kHz. For 28 mW into 32- loads, the THD+N is reduced to less than 0.03% at 1 kHz, and is less than 0.2% across the audio band of 20 Hz to 20 kHz.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet 50-mW Ultralow Voltage Stereo Headphone Audio Power Amplifier datasheet (Rev. B) Sep. 09, 2004
Application notes Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application notes AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
User guides TPA6100A2EVM - User Guide Dec. 12, 2000
Application notes A Low-Cost, Single Coupling Capacitor Config. for Stereo Headphone Amplifiers Dec. 22, 1999

Design & development

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Hardware development

document-generic User guide

The TPA6100A2 is a stereo headphone amplifier capable of delivering 50mW of continuous RMS power per channel into 16-Ohm speakers. The amplifier's gain is externally set by three resistors per input channel.

  • 50-mW stereo output
  • Low operating voltage...1.6V to 3.6V
  • Low supply current...0.75mA
  • Low shutdown current...50nA

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CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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