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50-mW Ultra Low-Voltage Stereo Headphone Audio Amplifier


Package | PIN: DGK | 8
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $1.11
10-24 $1.00
25-99 $0.93
100-249 $0.81
250-499 $0.75
500-749 $0.63
750-999 $0.51
1000+ $0.47


  • 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.

Texas Instruments  TPA6100A2DGKR

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.