2.8-W/Ch Stereo Class-D Audio Amplifier with Easy SmartGainTM AGC/DRC (TPA2017)


Product details


Audio input type Analog Input Architecture Class-D Speaker channels (Max) Stereo Power stage supply (Max) (V) 5.5 Power stage supply (Min) (V) 2.5 Load (Min) (ohms) 4 Output power (W) 2.8 THD + N @ 1 kHz (%) 1 Iq (Typ) (mA) 4.5 Control interface GPIO Closed/open loop Closed Analog supply (Min) (V) 2.3 Analog supply (Max) (V) 5.2 PSRR (dB) 80 Rating Catalog Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

WQFN (RTJ) 20 16 mm² 4 x 4 open-in-new Find other Speaker amps


  • Filter-Free Class-D Architecture
  • 3 SmartGain™ functions
    • AGC DRC Function
    • AGC Limiter Function
    • AGC Noise Gate Function
  • 1.7 W/Ch Into 8 at 5 V (10% THD+N)
  • 750 mW/Ch Into 8 at 3.6 V (10% THD+N)
  • 2.8 W/Ch Into 4 at 5 V (10% THD+N)
  • 1.5 W/Ch Into 4 at 3.6 V (10% THD+N)
  • Power Supply Range: 2.5 V to 5.5 V
  • Low Supply Current: 3.5 mA
  • Low Shutdown Current: 0.2 µA
  • High PSRR: 75 dB at 217 Hz
  • Fast Start-up Time: 5 ms
  • Short-Circuit and Thermal Protection
  • Space-Saving Package
    • 4 mm × 4 mm QFN (RTJ)
    • Wireless or Cellular Handsets and PDAs
    • Portable Navigation Devices
    • Portable DVD Player
    • Notebook PCs
    • Portable Radio
    • Portable Games
    • Educational Toys
    • USB Speakers

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The TPA2017D2 (sometimes referred to as TPA2017) is a stereo, filter-free Class-D audio power amplifier with SmartGain™ dynamic range compression (DRC), automatic gain control (AGC), and noise gate. It is available in a 4 mm x 4mm QFN package.

SmartGain™ functions are configured to automatically prevent distortion of the audio signal and enhance quiet passages that are normally not heard. SmartGain™ is a combined AGC DRC and Limiter that protects the speaker from damage at high power levels and compress the dynamic range of voice or music to fit within the dynamic range of the speaker. SmartGain™ DRC, limiter, and noise gate functions can be enabled or disabled. The TPA2017D2 (TPA2017) is capable of driving 1.7 W/Ch at 4 V or 750mW/Ch at 3.6 V into 8 load or 2.8 W/Ch at 5 V or 1.5 W/Ch at 3.6 V into 4 . The device features an enable pin and also provides thermal and short circuit protection.

In addition to these features, a fast start-up time and small package size make the TPA2017D2 (TPA2017) an ideal choice for Notebook PCs, PDAs and other portable applications.

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Technical documentation

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Type Title Date
* Datasheet 2.8-W/Ch Stereo Class-D Audio Amplifier with Easy SmartGainTM AGC/DRC datasheet Apr. 08, 2009
Application notes Filter-Free Class-D Audio Amplifiers Nov. 09, 2009
User guides TPA2017D2EVM - User Guide Apr. 09, 2009

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 TPA2017D2RTJEVM allows the engineer to evaluate the TPA2017D2, a stereo, Class-D audio power amplifier with SmartGain™ (AGC/DRC) in a QFN package. The TPA2017D2 has 2 GPIO pins for easy configuration.

  • Filter-Free Class-D Architecture
  • 2.8 W/Ch into 4 ohm at 5 V (10% THD+N)
  • 750 mW/Ch into 8 ohm at 3.6 V (10% THD+N)
  • Power Supply Range: 2.5 V to 5.5 V
  • Programmable SmartGain™ (DRC/AGC) Parameters
  • Simple GPIO Interface for SmartGain™ parameter configuration
  • Small 4mm x 4mm 20-QFN package

Design tools & simulation

Coefficient Calculator For Digital Biquad Filters
COEFFICIENT-CALC COEFFICIENT-CALC (TIBQ) calculates the coefficients for the digital filter biquad transfer function implemented in TI audio codecs. The characteristics of the digital filter are adjusted by selecting a filter type and moving a control point within a window that shows the transfer function gain and (...)

CAD/CAE symbols

Package Pins Download
QFN (RTJ) 20 View options

Ordering & quality

Support & training

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PurePath™ Studio Graphical Development Environment Start-up

A step-by-step guide to downloading and installing TI's PurePath™ Studio software for audio evaluation modules. This video features the TLV320AIC3254EVM-U.

Posted: 17-Jan-2016
Duration: 03:45

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