40-W mono, 10- to 26-V supply, analog input Class-D audio amplifier


Product details


Audio input type Analog Input Architecture Class-D Speaker channels (Max) Mono Power stage supply (Max) (V) 26 Power stage supply (Min) (V) 10 Load (Min) (ohms) 4 Output power (W) 40 THD + N @ 1 kHz (%) 0.2 Iq (Typ) (mA) 14 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 10 Analog supply (Max) (V) 26 PSRR (dB) 70 Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

HLQFP (VFP) 32 81 mm² 9 x 9 open-in-new Find other Speaker amps


  • 40-W Into an 8- Load From a 25-V Supply
  • Operates From 10 V to 26 V
  • Efficient Class-D Operation Eliminates the Need for Heat Sinks
  • Four Selectable, Fixed Gain Settings
  • Differential Inputs
  • Thermal and Short-Circuit Protection With Auto Recovery Feature
  • Clock Output for Synchronization With Multiple Class-D Devices
  • Surface Mount 7×7, 32-pin HLQFP Package
    • Televisions
    • Powered Speakers

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The TPA3106D1 is a 40-W efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. The TPA3106D1 can drive stereo speakers as low as 4. The high efficiency, ~92%, of the TPA3106D1 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 outputs are fully protected against shorts to GND, VCC, and output-to-output shorts with an auto recovery feature and monitor output.

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Next Generation 50-W, Stereo, Analog Input Class-D Audio Amplifier:  TPA3116D2

Technical documentation

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Type Title Date
* Datasheet 40-W Mono Class-D Audio Power Amplifier datasheet (Rev. C) Aug. 19, 2010
Application notes Using Thermal Calculation Tools for Analog Components (Rev. A) Aug. 30, 2019
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
Application notes AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013
User guides TPA3106D1 Audio Power Amplifier EVM With LC Filter (Rev. D) May 11, 2011
Application notes Interfacing External Devices to the TPA310xDx Amplifiers Sep. 29, 2008

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The TPA3106D1 evaluation module consists of a single 40 W, class-D, stereo audio power amplifier complete with a small number of external components mounted on a circuit board that can be used to directly drive speakers with an external analog audio source as the input.

  • 40 W Into an 8 Ω Load From a 24 V Supply
  • Operates From 10 V to 26 V
  • Efficient Class-D Operation Eliminates the need for Heat Sinks
  • Four Selectable, Fixed Gain Settings
  • Differential Inputs
  • Thermal and Short-Circuit Protection With Auto Recovery Feature
  • Clock Output for Synchronization With sink when playing (...)

Design tools & simulation

SLOM192A.ZIP (22 KB) - PSpice Model
SLOM193.ZIP (17 KB) - TINA-TI Spice Model
SLOM194.TSC (217 KB) - TINA-TI Reference Design

CAD/CAE symbols

Package Pins Download
HLQFP (VFP) 32 View options

Ordering & quality

Support & training

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