Product details

Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Rating Catalog Power stage supply (max) (V) 30 Power stage supply (min) (V) 12 Load (min) (Ω) 1.5 Output power (W) 115 SNR (dB) 112 THD + N at 1 kHz (%) 0.005 Iq (typ) (mA) 15 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 PSRR (dB) 60 Operating temperature range (°C) 0 to 70
Audio input type Analog Input Architecture Class-D Speaker channels (max) 4 Rating Catalog Power stage supply (max) (V) 30 Power stage supply (min) (V) 12 Load (min) (Ω) 1.5 Output power (W) 115 SNR (dB) 112 THD + N at 1 kHz (%) 0.005 Iq (typ) (mA) 15 Control interface Hardware Closed/open loop Closed Analog supply (min) (V) 10.8 Analog supply voltage (max) (V) 13.2 PSRR (dB) 60 Operating temperature range (°C) 0 to 70
HTSSOP (DDV) 44 113.4 mm² 14 x 8.1
  • Differential Analog Inputs
  • Total Output Power at 10%THD+N
    • 115-W Stereo into 4 Ω in BTL Configuration
    • 145-W Stereo into 3 Ω in BTL Configuration
    • 230-W Mono into 2 Ω in PBTL Configuration
  • Total Output Power at 1%THD+N
    • 95-W Stereo into 4 Ω in BTL Configuration
    • 115-W Stereo into 3 Ω in BTL Configuration
    • 185-W Mono into 2 Ω in PBTL Configuration
  • Advanced Integrated Feedback Design with High-speed Gate Driver Error Correction
    (PurePath™ Ultra-HD)
    • Signal Bandwidth up to 100 kHz for High Frequency Content From HD Sources
    • Ultra Low 0.005% THD+N at 1 W into 4 Ω and <0.01% THD+N to Clipping
    • 65 dB PSRR (BTL, No Input Signal)
    • <50 µV (A-Weighted) Output Noise
    • >112 dB (A Weighted) SNR
  • Multiple Configurations Possible:
    • Stereo, Mono, 2.1 and 4xSE
  • Click and Pop Free Startup and Stop
  • 90% Efficient Class-D Operation (4 Ω)
  • Wide 12-V to 30-V Supply Voltage Operation
  • Self-Protection Design (Including Undervoltage, Overtemperature, Clipping, and Short Circuit Protection) With Error Reporting
  • EMI Compliant When Used With Recommended System Design
  • Differential Analog Inputs
  • Total Output Power at 10%THD+N
    • 115-W Stereo into 4 Ω in BTL Configuration
    • 145-W Stereo into 3 Ω in BTL Configuration
    • 230-W Mono into 2 Ω in PBTL Configuration
  • Total Output Power at 1%THD+N
    • 95-W Stereo into 4 Ω in BTL Configuration
    • 115-W Stereo into 3 Ω in BTL Configuration
    • 185-W Mono into 2 Ω in PBTL Configuration
  • Advanced Integrated Feedback Design with High-speed Gate Driver Error Correction
    (PurePath™ Ultra-HD)
    • Signal Bandwidth up to 100 kHz for High Frequency Content From HD Sources
    • Ultra Low 0.005% THD+N at 1 W into 4 Ω and <0.01% THD+N to Clipping
    • 65 dB PSRR (BTL, No Input Signal)
    • <50 µV (A-Weighted) Output Noise
    • >112 dB (A Weighted) SNR
  • Multiple Configurations Possible:
    • Stereo, Mono, 2.1 and 4xSE
  • Click and Pop Free Startup and Stop
  • 90% Efficient Class-D Operation (4 Ω)
  • Wide 12-V to 30-V Supply Voltage Operation
  • Self-Protection Design (Including Undervoltage, Overtemperature, Clipping, and Short Circuit Protection) With Error Reporting
  • EMI Compliant When Used With Recommended System Design

TPA3245 is a high performance class-D power amplifier that enables true premium sound quality with class-D efficiency. It features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath™ Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality. The device is operated in AD-mode, and can drive up to 2 x 115 W into 4-Ω load and 2 x 145 W into 3-Ω load and features a 2 VRMS analog input interface that works seamlessly with high performance DACs such as TI’s PCM5242. In addition to excellent audio performance, TPA3245 achieves both high power efficiency and very low power stage idle losses below 0.45 W. This is achieved through the use of 65 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.

TPA3245 is a high performance class-D power amplifier that enables true premium sound quality with class-D efficiency. It features an advanced integrated feedback design and proprietary high-speed gate driver error correction (PurePath™ Ultra-HD). This technology allows ultra low distortion across the audio band and superior audio quality. The device is operated in AD-mode, and can drive up to 2 x 115 W into 4-Ω load and 2 x 145 W into 3-Ω load and features a 2 VRMS analog input interface that works seamlessly with high performance DACs such as TI’s PCM5242. In addition to excellent audio performance, TPA3245 achieves both high power efficiency and very low power stage idle losses below 0.45 W. This is achieved through the use of 65 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.

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Technical documentation

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Type Title Date
* Data sheet TPA3245 115-W Stereo, 230-W Mono PurePath™ Ultra-HD Analog-Input Class-D Amplifier datasheet (Rev. A) PDF | HTML 26 Oct 2016
Application note TPA324x and TPA325x Post-Filter Feedback (Rev. A) 07 Mar 2018
More literature High-Power Audio Amplifiers TPA322x/4x/5x 01 Dec 2017
Application note Multi-Device Configuration for TPA32xx Amplifiers 27 Sep 2017
Technical article Professional audio equipment made the most noise at the 2017 NAMM Show PDF | HTML 14 Mar 2017
More literature TI Automotive External Amplifiers (Rev. A) 03 Feb 2017
More literature TI Powered Speakers (Rev. A) 31 Jan 2017
User guide TPA3245 Evaluation Module (Rev. A) 30 Jan 2017
Application note Class-D Amplifier External Load Diagnostics 23 Jan 2017
Application note LC Filter Design (Rev. A) 09 Nov 2016
Application note TPA32xx Analog Input Grounding for Single Ended Inputs PDF | HTML 26 Aug 2016
More literature High-Power Audio Amplifiers 14 Jul 2016

Design & development

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Evaluation board

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Design tool

SLAC735 TPA3245 Setup Guide & Configuration Tool

Supported products & hardware

Supported products & hardware

Products
Speaker amps
TPA3245 115-W stereo, 230-W mono, 12- to 31.5-V supply, analog input Class-D audio amplifier
Hardware development
Evaluation board
TPA3245EVM TPA3245 115W Stereo / 230W Mono Ultra-HD Analog-In Audio Class-D Module
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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 (DDV) 44 Ultra Librarian

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