TPA3245

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115-W stereo, 230-W mono, 12- to 31.5-V supply, analog input Class-D audio amplifier

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Product details

Parameters

Audio input type Analog Input Architecture Class-D Speaker channels (Max) 4 Power stage supply (Max) (V) 30 Power stage supply (Min) (V) 12 Load (Min) (ohms) 1.5 Output power (W) 115 SNR (dB) 112 THD + N @ 1 kHz (%) 0.005 Iq (Typ) (mA) 15 Control interface Hardware Analog supply (Min) (V) 10.8 Analog supply (Max) (V) 13.2 PSRR (dB) 60 Operating temperature range (C) 0 to 70 open-in-new Find other Speaker amps

Package | Pins | Size

HTSSOP (DDV) 44 113 mm² 14 x 8.1 open-in-new Find other Speaker amps

Features

  • 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

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Description

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

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

Design & development

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

Hardware development

EVALUATION BOARD Download
Guitar SideGig Plug-In Module
SIDEGIG-GUITAREVM
49
Description

The TI Guitar SideGig plug-in module turns TI Audio Class-D amplifier EVM’s into a guitar, bass or musical instrument amplifier. The board features selectable “clean” and “drive” channels for traditional and overdriven guitar sounds. The clean channel offers volume (...)

Features
  • Connects to TI Class-D Amplifier EVMs with the Audio Interface Board (AIB) connector
  • Drive channel adds drive, tone and level controls
  • Clean Channel with treble, middle, bass and volume controls
  • Supports one BTL channel or PBTL Class-D amplifier output
  • Input: ¼” mono input jack for musical instruments
  • (...)
EVALUATION BOARD Download
49
Description
The TI Prototype Audio Plug-in Module turns TI Audio Class-D amplifier EVM’s into your sandbox. Need to prototype a pre-amplifier circuit or test an opamp with TI Class-D EVMs, then start with the DIY Audio Plug-in Module.

Start your prototype on the included breadboard or solder directly to the PCB (...)
Features
  • Compatible with TI Audio Plug-in Module Ecosystem
  • Prototype using either the included breadboard or perf-board dot pattern
  • Class-D Input and Outputs provided on a 100 mil header
  • Connect to TI Class-D Audio EVMs (Check compatibility)
EVALUATION BOARD Download
49
Description
The TI Analog, Active Crossover Audio Plug-in Module turns TI Audio Class-D amplifier EVM’s into a high quality, two-way speaker amplifier.  The plug-in module makes it easy to remove the large and expensive passive crossover found in passive loudspeakers and create a biamped, two-way (...)
Features
  • Compatible with TI Audio Plug-in Module Ecosystem
  • Complete design for two-way, active crossover speakers
  • Active crossover includes a high-pass filter, low-pass filter, baffle step and delay
  • Input: Mono RCA jack
  • Output: Analog, 2-channel, 2-Vrms differential
  • Connect to TI Class-D Audio EVMs (Check (...)
EVALUATION BOARD Download
149
Description
The TPA3245EVM Ultra-HD evaluation module demonstrates the TPA3245DDV integrated circuit from Texas Instruments. The TPA3245DDV is a high-performance class-D amplifier that enables true premium sound quality with high efficiency class-D technology. It features an advanced integrated feedback design (...)
Features
  • Stereo Ultra-HD evaluation module
  • Self-contained protection system (short circuit, clip and thermal)
  • Standard 2VRMS differential input  or single ended line input
  • BTL, PBTL and SE output configurations support
  • Double-sided, plated-through, 2oz. cu 2 layer PCB layout

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
  • (...)
DESIGN TOOL Download
SLAC735A.ZIP (349 KB)

CAD/CAE symbols

Package Pins Download
HTSSOP (DDV) 44 View options

Ordering & quality

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