3.2-W, stereo, analog input Class-D audio amp with auto. gain control & dynamic range compression


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) 8 Output power (W) 3.2 SNR (dB) 95 THD + N @ 1 kHz (%) 0.1 Iq (Typ) (mA) 4.5 Control interface I2C Closed/open loop Closed Analog supply (Min) (V) 2.5 Analog supply (Max) (V) 5.5 PSRR (dB) 80 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

DSBGA (YZH) 16 5 mm² 2.174 x 2.152 open-in-new Find other Speaker amps


  • Fast AGC Start-Up Time: 5 ms
  • Pinout Compatible With TPA2016D2
  • Filter-Free Class-D Architecture
  • 3.2 W/Ch Into 4 Ω at 5 V (10% THD+N)
  • 750 mW/Ch Into 8 Ω at 3.6 V (10% THD+N)
  • Power Supply Range: 2.5 V to 5.5 V
  • Flexible Operation With or Without I2C
  • Programmable DRC and AGC Parameters
  • Digital I2C Volume Control
  • Selectable Gain from 0 dB to 30 dB in 1-dB Steps
  • Selectable Attack, Release, and Hold Times
  • 4 Selectable Compression Ratios
  • Low Supply Current: 3.5 mA
  • Low Shutdown Current: 0.2 µA
  • High PSRR: 80 dB
  • AGC Enable or Disable Function
  • Limiter Enable or Disable Function
  • Short-Circuit and Thermal Protection
  • Space-Saving Package
    • 2.2 mm × 2.2 mm Nano-Free™ DSBGA (YZH)
    • Wireless or Cellular Handsets and PDAs
    • Portable Navigation Devices
    • Portable DVD Players
    • Notebook PCs
    • Portable Radios
    • Portable Games
    • Educational Toys
    • USB Speakers

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The TPA2026D2 device is a stereo, filter-free Class-D audio power amplifier with volume control, dynamic range compression (DRC), and automatic gain control (AGC). It is available in a 2.2 mm × 2.2 mm DSBGA package.

The DRC and AGC function in the TPA2026D2 is programmable through a digital I2C interface. The DRC and AGC function can be configured to automatically prevent distortion of the audio signal and enhance quiet passages that are normally not heard. The DRC and AGC can also be configured to protect the speaker from damage at high power levels and compress the dynamic range of music to fit within the dynamic range of the speaker. The gain can be selected from 0 dB to +30 dB in 1-dB steps. The TPA2026D2 is capable of driving 3.2 W/Ch at 5 V into an 4-Ω load or 750 mW/Ch at 3.6 V into an 8-Ω load. The device features independent software shutdown controls for each channel and also provides thermal and short-circuit protection. The TPA2026D2 has faster AGC gain ramp during start-up than TPA2016D2.

In addition to these features, a fast start-up time and small package size make the TPA2026D2 an ideal choice for cellular handsets, PDAs, and other portable applications.

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Technical documentation

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Type Title Date
* Data sheet TPA2026D2 3.2-W/Ch Stereo Class-D Audio Amplifier With Fast Gain Ramp SmartGain Automatic Gain Control and Dynamic Range Compression datasheet (Rev. B) May 31, 2016
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) May 01, 2013
User guide TPA2026D2 User's Guide Mar. 04, 2010

Design & development

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SLOM174A.ZIP (31 KB) - PSpice Model
SLOM175.ZIP (74 KB) - TINA-TI Spice Model
SLOM176.TSC (149 KB) - TINA-TI Reference Design
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