2.1-W, stereo, analog input Class-D audio amp with selectable gain


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) 2.1 SNR (dB) 95 THD + N @ 1 kHz (%) 0.14 Iq (Typ) (mA) 6 Control interface GPIO Closed/open loop Open Analog supply (Min) (V) 2.5 Analog supply (Max) (V) 5.5 PSRR (dB) 71 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

DSBGA (YZH) 16 5 mm² 2.016 x 2.016 WQFN (RTJ) 20 16 mm² 4 x 4 open-in-new Find other Speaker amps


  • Output Power By Package:
    • WQFN:
      • 2.1 W/Ch Into 4 Ω at 5 V
      • 1.4 W/Ch Into 8 Ω at 5 V
      • 720 mW/Ch Into 8 Ω at 3.6 V
    • DSBGA:
      • 1.2 W/Ch Into 4 Ω at 5 V
        (Thermally Limited)
      • 1.3 W/Ch Into 8 Ω at 5 V
      • 720 mW/Ch Into 8 Ω at 3.6 V
  • Only Two External Components Required
  • Power Supply Range: 2.5 V to 5.5 V
  • Independent Shutdown Control for Each Channel
  • Selectable Gain of 6, 12, 18, and 24 dB
  • Internal Pulldown Resistor on Shutdown Pins
  • High PSRR: 77 dB at 217 Hz
  • Fast Start-Up Time (3.5 ms)
  • Low Supply Current
  • Low Shutdown Current
  • Short-Circuit and Thermal Protection
  • Space-Saving Packages
    • 2.01-mm × 2.01-mm NanoFree™ DSBGA (YZH)
    • 4-mm × 4-mm Thin WQFN (RTJ) With PowerPAD™
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The TPA2012D2 is a stereo, filter-free, Class-D audio amplifier (Class-D amp) available in a DSBGA or WQFN package. The TPA2012D2 only requires two external components for operation.

The TPA2012D2 features independent shutdown controls for each channel. The gain can be selected to 6, 12, 18, or 24 dB using the G0 and G1 gain select pins. High PSRR and differential architecture provide increased immunity to noise and RF rectification. In addition to these features, a fast start-up time and small package size make the TPA2012D2 class-D amp an ideal choice for both cellular handsets and PDAs.

The TPA2012D2 is capable of driving 1.4 W/Ch at
5 V or 720 mW/Ch at 3.6 V into 8 Ω. The TPA2012D2 is also capable of driving 4 Ω. The TPA2012D2 is thermally limited in DSBGA and may not achieve
2.1 W/Ch for 4 Ω. The maximum output power in the DSBGA is determined by the ability of the circuit board to remove heat. Figure 33 shows thermally limited region of the DSBGA in relation to the WQFN package. The TPA2012D2 provides thermal and short-circuit protection.

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Technical documentation

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Type Title Date
* Data sheet TPA2012D2 2.1-W/Channel Stereo Filter-Free Class-D Audio Power Amplifier datasheet (Rev. F) Mar. 14, 2017
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
More literature TPA2012D2_NanoEVM_ Schematic Feb. 13, 2007
More literature TPA2012D2_NanoEVM_OV Jan. 29, 2007
Application note Measuring Class-D Amplifiers for Audio Speaker Overstress Testing Oct. 28, 2005
User guide TPA2012D2EVM - User Guide (Rev. A) Apr. 07, 2005

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 SimpleLink™ Wi-Fi® CC3200 Audio BoosterPack enables the evaluation and development with the digital audio peripheral [I2S] present on the SimpleLink™ Wi-Fi® CC3200 device. It contains a Class-D power amplifier to drive speakers and an ultra-low power audio codec, TLV320AIC3254, supporting (...)

  • 1 Microphone
  • 1 audio 3.5 mono jack
  • 2 audio 3.5 mm stereo jack (in and out)
  • Onboard speaker connector using terminal blocks (stereo)
  • Onboard audio codec (TLV320AIC3254)
  • Onboard class-D audio power amplifier (TPA2012D2)
document-generic User guide

The TPA2012D2 EVM is a Pb-free, highly-efficient, filter-free stereo audio power amplifier evaluation module. It consists of the TI TPA2012D2 1.65 W low-voltage stereo Class-D audio power amplifier IC in a very small NanoFree™ wafer chip scale package (WCSP). All devices including the (...)

  • Includes a 2 mm x 2 mm NanoFree™ WSCP IC
  • Independent Shutdown Control for Each Channel
  • 1.65 W Output Power Into 4 Ohms at 5 V, BTL
  • Wide Supply Voltage Range (2.5 V to 5.5 V)
  • Internal depop and quick start-up circuitry
  • Internal thermal and short-circuit protection
  • Module gain is set at 5 V/V
  • Completely Pb Free

Design tools & simulation

SLOM159.ZIP (22 KB) - TINA-TI Spice Model
SLOM160.TSC (37 KB) - TINA-TI Reference Design
SLOM162.ZIP (6 KB) - PSpice Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

Wi-Fi Audio Streaming Application for SimpleLink Wi-Fi CC3200 Launchpad
TIDC-CC3200AUDBOOST This SimpleLink Wi-Fi CC3200 LaunchPad and Audio BoosterPack design brings Wi-Fi audio streaming capability to new applications as well as existing ones such as HD digital speakers. It enables the capture, streaming and playback of audio from a digital microphone or a stereo/mono audio jack to (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
DSBGA (YZH) 16 View options
QFN (RTJ) 20 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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