TPA3123D2 25-W Stereo Class-D Audio Power Amplifier with SE Outputs (TPA3123) |

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25-W Stereo Class-D Audio Power Amplifier with SE Outputs (TPA3123)

25-W Stereo Class-D Audio Power Amplifier with SE Outputs (TPA3123) - TPA3123D2

Next Generation 30-W, Stereo, Analog Input Class-D Audio Amplifier:  TPA3118D2

Next Generation 30-W, Stereo Class-D Amplifier with Low-Idle Power Dissipation (Analog-In) for Battery Operated Systems Available:  TPA3128D2


The TPA3123D2 is a 25-W (per channel) efficient, Class-D audio power amplifier for driving stereo speakers in a single-ended configuration or a mono speaker in a bridge-tied-load configuration. The TPA3123D2 can drive stereo speakers as low as 4 . The efficiency of the TPA3123D2 eliminates the need for an external heat sink when playing music.

The gain of the amplifier is controlled by two gain select pins. The gain selections are 20, 26, 32, 36 dB.

The patented start-up and shut-down sequences minimize pop noise in the speakers without additional circuitry.


  • 25-W/ch into a 4- Load from a 27-V Supply
  • 20-W/ch into a 4- Load from a 24-V Supply
  • Operates from 10 V to 30 V
  • Efficient Class-D Operation Eliminates Need for Heat Sinks
  • Four Selectable, Fixed-Gain Settings
  • Internal Oscillator (No External Components Required)
  • Single-Ended Analog Inputs
  • Thermal and Short-Circuit Protection With Auto Recovery
  • Space-Saving Surface-Mount 24-Pin TSSOP Package
  • Pin-to-Pin compatible with TPA3120D2
  • Advanced Power-Off Pop Reduction
    • Televisions

System Two, Audio Precision are trademarks of Audio Precision, Inc.


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Part number Order Audio input type Architecture Speaker channels (Max) Power stage supply (Min) (V) Power stage supply (Max) (V) Load (Min) (ohms) THD + N @ 1 kHz (%) Iq (Typ) (mA) Control interface Closed/open loop Analog supply (Min) (V) Analog supply (Max) (V) PSRR (dB) Operating temperature range (C) Rating
TPA3123D2 Order now Analog Input     Class-D     Stereo     10     30     4     0.08     23     Hardware     Closed     10     30     60     -40 to 85     Catalog