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) 8 Load (Min) (ohms) 4 Output power (W) 10 SNR (dB) 102 THD + N @ 1 kHz (%) 0.05 Iq (Typ) (mA) 10 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 8 Analog supply (Max) (V) 26 PSRR (dB) 70 Operating temperature range (C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (Max) Mono Power stage supply (Max) (V) 26 Power stage supply (Min) (V) 8 Load (Min) (ohms) 4 Output power (W) 10 SNR (dB) 102 THD + N @ 1 kHz (%) 0.05 Iq (Typ) (mA) 10 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 8 Analog supply (Max) (V) 26 PSRR (dB) 70 Operating temperature range (C) -40 to 85
HTSSOP (PWP) 28 43 mm² 4.4 x 9.7
  • 10-W into an 8-Ω Load at 10% THD+N From a 12-V Supply
  • 7-W into an 4-Ω Load at 10% THD+N From a 8-V Supply
  • 94% Efficient Class-D Operation into 8-Ω Load Eliminates Need for Heat Sinks
  • Wide Supply Voltage Range Allows Operation from 8 to 26 V
  • Filter-Free Operation
  • SpeakerGuard™ Speaker Protection Includes Adjustable Power Limiter Plus DC Protection
  • Flow-Through Pinout Facilitates Easy Board Layout
  • Robust Pin-to-Pin Short-Circuit Protection and Thermal Protection With Auto-Recovery Option
  • Excellent THD+N and Pop-Free Performance
  • Four Selectable, Fixed Gain Settings
  • Differential Inputs
  • APPLICATIONS
    • Televisions
    • Monitors and Laptops
    • Consumer Audio Equipment

All other trademarks are the property of their respective owners

  • 10-W into an 8-Ω Load at 10% THD+N From a 12-V Supply
  • 7-W into an 4-Ω Load at 10% THD+N From a 8-V Supply
  • 94% Efficient Class-D Operation into 8-Ω Load Eliminates Need for Heat Sinks
  • Wide Supply Voltage Range Allows Operation from 8 to 26 V
  • Filter-Free Operation
  • SpeakerGuard™ Speaker Protection Includes Adjustable Power Limiter Plus DC Protection
  • Flow-Through Pinout Facilitates Easy Board Layout
  • Robust Pin-to-Pin Short-Circuit Protection and Thermal Protection With Auto-Recovery Option
  • Excellent THD+N and Pop-Free Performance
  • Four Selectable, Fixed Gain Settings
  • Differential Inputs
  • APPLICATIONS
    • Televisions
    • Monitors and Laptops
    • Consumer Audio Equipment

All other trademarks are the property of their respective owners

The TPA3111D1 device is a 10-W, efficient, Class-D audio power amplifier for driving a bridge tied speaker. Advanced EMI suppression technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard speaker protection system includes an adjustable power limiter and a DC detection circuit. The adjustable power limiter lets the user to set a virtual voltage rail lower than the chip supply to limit the current through the speaker. The DC Detect circuit measures the frequency and amplitude of the PWM signal and shuts off the output stage if the input capacitors are damaged or shorts exist on the inputs.

The TPA3111D1 can drive a mono speaker as low as 4 Ω. The high efficiency of the TPA3111D1, >90%, eliminates the requirement for an external heat sink when playing music.

The outputs are fully protected against shorts to GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto-recovery feature.

The TPA3111D1 device is a 10-W, efficient, Class-D audio power amplifier for driving a bridge tied speaker. Advanced EMI suppression technology enables the use of inexpensive ferrite bead filters at the outputs while meeting EMC requirements. SpeakerGuard speaker protection system includes an adjustable power limiter and a DC detection circuit. The adjustable power limiter lets the user to set a virtual voltage rail lower than the chip supply to limit the current through the speaker. The DC Detect circuit measures the frequency and amplitude of the PWM signal and shuts off the output stage if the input capacitors are damaged or shorts exist on the inputs.

The TPA3111D1 can drive a mono speaker as low as 4 Ω. The high efficiency of the TPA3111D1, >90%, eliminates the requirement for an external heat sink when playing music.

The outputs are fully protected against shorts to GND, VCC, and output-to-output. The short-circuit protection and thermal protection includes an auto-recovery feature.

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Technical documentation

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Type Title Date
* Data sheet TPA3111D1 10-W Filter-Free Mono Class-D Audio Power Amplifier With Speaker Guard™ datasheet (Rev. F) 11 Aug 2016
Application note Using Thermal Calculation Tools for Analog Components (Rev. A) 30 Aug 2019
Application note Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) 26 Aug 2019
Application note AN-1849 An Audio Amplifier Power Supply Design (Rev. C) 27 Jun 2019
Application note AN-1737 Managing EMI in Class D Audio Applications (Rev. A) 01 May 2013
User guide TPA3111D1EVM Audio Amplifier Evaluation Board User's Guide (Rev. A) 07 Jul 2010

Design & development

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

Evaluation board

TPA3111D1EVM — TPA3111D1 Evaluation Module

The TPA3111D1 evaluation module consists of a single 10-W, Class-D, mono audio power amplifier complete with a small number of external components mounted on a circuit board that can be used to directly drive a speaker with an external analog audio source as the input. The EVM’s default output (...)

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Simulation model

TPA3111D1 TINA-TI Reference Design (Rev. A)

SLAM054A.TSC (257 KB) - TINA-TI Reference Design
Simulation model

TPA3111D1 TINA-TI Spice Model (Rev. A)

SLAM055A.ZIP (13 KB) - TINA-TI Spice Model
Simulation model

TPA3111D1 Unencrypted PSpice Model Package (Rev. B)

SLOM329B.ZIP (21 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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HTSSOP (PWP) 28 View options

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