3.2-W, mono, analog input Class-D audio amplifier with auto-recovering short-circuit protection


Product details


Audio input type Analog Input Architecture Class-D Speaker channels (Max) Mono Power stage supply (Max) (V) 5.5 Power stage supply (Min) (V) 2.5 Load (Min) (ohms) 4 Output power (W) 3.2 SNR (dB) 95 THD + N @ 1 kHz (%) 0.23 Iq (Typ) (mA) 1.8 Control interface Hardware Closed/open loop Open Analog supply (Min) (V) 2.5 Analog supply (Max) (V) 5.5 PSRR (dB) 86 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

DSBGA (YFF) 9 2 mm² 1.254 x 1.2 open-in-new Find other Speaker amps


  • Powerful Mono Class-D Amplifier
    • 3.24 W (4 Ω, 5 V, 10% THDN)
    • 2.57 W (4 Ω, 5 V, 1% THDN)
    • 1.80 W (8 Ω, 5 V, 10% THDN)
    • 1.46 W (8 Ω, 5 V, 1% THDN)
  • Integrated Feedback Resistor of 300 kΩ
  • Integrated Image Reject Filter for DAC Noise
  • Low Output Noise of 20 µV
  • Low Quiescent Current of 1.5 mA
  • Auto Recovering Short-Circuit Protection
  • Thermal Overload Protection
  • 9-Ball, 1.21mm × 1.16 mm 0.4 mm Pitch DSBGA
    • Wireless or Cellular Handsets and PDAs
    • Portable Navigation Devices
    • General Portable Audio Devices

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The TPA2011D1 is a 3.2-W high efficiency filter-free class-D audio power amplifier (class-D amp) in a 1.21 mm × 1.16 mm wafer chip scale package (DSBGA) that requires only three external components.

Features like 95% efficiency, 86-dB PSRR, 1.5 mA quiescent current and improved RF immunity make the TPA2011D1 class-D amp ideal for cellular handsets. A fast start-up time of 4 ms with no audible turn-on pop makes the TPA2011D1 ideal for PDA and smart-phone applications. The TPA2011D1 allows independent gain while summing signals from separate sources, and has a low 20 µV noise floor.

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Technical documentation

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Type Title Date
* Data sheet TPA2011D1 3.2-W Mono Filter-Free Class-D Audio Power Amplifier With Auto-Recovering Short-Circuit Protection datasheet (Rev. B) Nov. 04, 2015
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 TPA2011D1EVM - User Guide Dec. 08, 2009

Design & development

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Hardware development

document-generic User guide

The TPA2011D1 audio power amplifier evaluation module is a complete, low-power, Class-D, mono audio power amplifier capable of delivering 1.47 W into 8 Ω and 2.57 W into 4 ohms at 1% THD+N (YFF package). All components and the evaluation module are Pb-free. The TPA2011D1 evaluation module (EVM (...)

  • Powerful Mono Class-D Amplifier
  • Integrated Feedback Resistor of 300 kΩ
  • Integrated Image Reject Filter for DAC Noise Reduction
  • Low Output Noise of 20 μV
  • Low Quiescent Current of 1.5 mA
  • Auto Recovering Short-Circuit Protection
  • Thermal Overload Protection

Design tools & simulation

SLAM048.ZIP (17 KB) - TINA-TI Spice Model
SLAM049.TSC (24 KB) - TINA-TI Reference Design
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

Low-power wireless camera reference design for extended battery life
TIDA-010224 — This reference design provides a solution for a battery-operated wireless camera by combining industry-leading image processing, connectivity, sensor and power. High-efficiency power converters along with optimized system architecture help to increase battery life. The image
processor with a (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
DSBGA (YFF) 9 View options

Ordering & quality

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