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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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Data sheet

TPA3123D2

ACTIVE
Data sheet Order now

Product details

Audio input type Analog Input Architecture Class-D Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 30 Power stage supply (min) (V) 10 Load (min) (Ω) 4 Output power (W) 25 SNR (dB) 99 THD + N at 1 kHz (%) 0.08 Iq (typ) (mA) 23 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10 Analog supply voltage (max) (V) 30 PSRR (dB) 60 Operating temperature range (°C) -40 to 85
Audio input type Analog Input Architecture Class-D Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 30 Power stage supply (min) (V) 10 Load (min) (Ω) 4 Output power (W) 25 SNR (dB) 99 THD + N at 1 kHz (%) 0.08 Iq (typ) (mA) 23 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10 Analog supply voltage (max) (V) 30 PSRR (dB) 60 Operating temperature range (°C) -40 to 85
HTSSOP (PWP) 24 49.92 mm² 7.8 x 6.4
  • 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.
  • 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.

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.

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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Technical documentation

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Type Title Date
* Data sheet 25W Stereo Class-D Audio Power Amplifier datasheet (Rev. C) 19 Aug 2010
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
Application note Filter-Free Class-D Audio Amplifiers 09 Nov 2009
EVM User's guide TPA3123D2EVM - User Guide 01 Aug 2007

Design & development

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Evaluation board

TPA3123D2EVM — TPA3123D2 Evaluation Module (EVM)

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.

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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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