TPA3123D2

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25-W stereo, 10- to 30-V supply, analog input Class-D audio amplifier w/ SE outputs

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Product details

Parameters

Audio input type Analog Input Architecture Class-D Speaker channels (Max) Stereo Power stage supply (Max) (V) 30 Power stage supply (Min) (V) 10 Load (Min) (ohms) 4 Output power (W) 25 SNR (dB) 99 THD + N @ 1 kHz (%) 0.08 Iq (Typ) (mA) 23 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 10 Analog supply (Max) (V) 30 PSRR (dB) 60 Operating temperature range (C) -40 to 85 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (PWP) 24 34 mm² 4.4 x 7.8 open-in-new Find other Speaker amps

Features

  • 25-W/ch into a 4- Load from a 27-V Supply
  • 20-W/ch into a 4- Load from a 24-V Supply
  • Operates from 10 V to 30 V
  • Efficient Class-D Operation Eliminates Need for Heat Sinks
  • Four Selectable, Fixed-Gain Settings
  • Internal Oscillator (No External Components Required)
  • Single-Ended Analog Inputs
  • Thermal and Short-Circuit Protection With Auto Recovery
  • Space-Saving Surface-Mount 24-Pin TSSOP Package
  • Pin-to-Pin compatible with TPA3120D2
  • Advanced Power-Off Pop Reduction
  • APPLICATIONS
    • Televisions

System Two, Audio Precision are trademarks of Audio Precision, Inc.

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Description

The TPA3123D2 is a 25-W (per channel) efficient, Class-D audio power amplifier for driving stereo speakers in a single-ended configuration or a mono speaker in a bridge-tied-load configuration. The TPA3123D2 can drive stereo speakers as low as 4 . The efficiency of the TPA3123D2 eliminates the need for an external heat sink when playing music.

The gain of the amplifier is controlled by two gain select pins. The gain selections are 20, 26, 32, 36 dB.

The patented start-up and shut-down sequences minimize pop noise in the speakers without additional circuitry.

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Next Generation 30-W, Stereo, Analog Input Class-D Audio Amplifier:  TPA3118D2

Next Generation 30-W, Stereo Class-D Amplifier with Low-Idle Power Dissipation (Analog-In) for Battery Operated Systems Available:  TPA3128D2

Technical documentation

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Type Title Date
* Data sheet 25W Stereo Class-D Audio Power Amplifier datasheet (Rev. C) Aug. 19, 2010
Application note Using Thermal Calculation Tools for Analog Components (Rev. A) Aug. 30, 2019
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
Application note Filter-Free Class-D Audio Amplifiers Nov. 09, 2009
User guide TPA3123D2EVM - User Guide Aug. 01, 2007

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
99
Description

The TPA3123D2 evaluation module consists of a single 25 W, class-D, stereo audio power  amplifier complete with a small number of external components mounted on a circuit board that are used to directly drive speakers with an external analog audio source as the input.

Features
  • 25 W/ch into a 4 Ω Load from a 27 V Supply
  • 20 W/ch into a 4 Ω Load from a 24 V Supply
  • Operates from 10 V to 30 V
  • Efficient Class-D Operation Eliminates Need for Heat Sinks
  • Four Selectable, Fixed-Gain Settings
  • Internal Oscillator (No External Components Required)
  • Single-Ended Analog Inputs
  • Thermal and (...)

Design tools & simulation

SIMULATION TOOL Download
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 (...)
Features
  • 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
  • (...)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 24 View options

Ordering & quality

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  • Ongoing reliability monitoring

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