TPA6100A2 50-mW Ultra Low-Voltage Stereo Headphone Audio Amplifier | TI.com

TPA6100A2
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50-mW Ultra Low-Voltage Stereo Headphone Audio Amplifier

 

Description

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.

Features

  • 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.

Parametrics

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Part number Order Output power (W) Analog supply (Min) (V) Analog supply (Max) (V) PSRR (dB) Rating Operating temperature range (C) Headphone channels Volume control Shutdown current (ISD) (uA) Architecture Iq per channel (Typ) (mA)
TPA6100A2 Order now 0.05     1.6     3.6     72     Catalog     -40 to 85     Stereo     No     0.05     Class-AB     0.8    
TPA6110A2 Order now 0.15     2.5     5.5     83     Catalog     -40 to 85     Stereo     No     1     Class-AB     0.75    
TPA6111A2 Order now 0.15     2.5     5.5     83     Catalog     -40 to 85     Stereo     No     1     Class-AB     0.75    
TPA6112A2 Order now 0.15     2.5     5.5     83     Catalog     -40 to 85     Stereo     No     10     Class-AB     0.75