115W Stereo / 230W Mono PurePath™ Ultra-HD, Analog-In Class-D Amplifier - TPA3245

TPA3245 (ACTIVE)

115W Stereo / 230W Mono PurePath™ Ultra-HD, Analog-In Class-D Amplifier

 

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 × 115 W into 4-Ω load and 2 × 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.

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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Parametrics Compare all products in Analog Input Class-D

 
Power to Bridge Tied Load (Max) (W)
Power to Parallel Bridge Tied Load (Max) (W)
Supported Bridge Tied Load (Min) (Ohms)
Supported Parallel Bridge Tied Load (Min) (Ohms)
Closed/Open Loop
Control Interface
Analog Supply (V) (Min)
Analog Supply (V) (Max)
Output Power (W)
Power Stage Supply (Max) (V)
Speaker Channels (Max)
THD + N @ 1 kHz (%)
Iq (Typ) (mA)
Operating Temperature Range (C)
Rating
Package Group
Audio Input Type
Package Size: mm2:W x L (PKG)
TPA3245 TPA3244 TPA3250 TPA3251 TPA3255
150    100    130    220    325   
230    160    189    355    600   
3    3    4    3    4   
2    2    3    2    2   
Closed    Closed    Closed    Closed    Closed   
Hardware    Hardware    Hardware    Hardware    Hardware   
10.8    10.8    10.8    10.8    10.8   
13.2    13.2    13.2    13.2    13.2   
115    100    130    175    315   
38    38    38    38    52   
4    4    4    4    4   
0.005    0.005    0.005    0.005    0.006   
15      12.5    12.5    24   
0 to 70    0 to 70    0 to 70    0 to 70    0 to 70   
Catalog    Catalog    Catalog    Catalog    Catalog   
HTSSOP    HTSSOP    HTSSOP    HTSSOP    HTSSOP   
Analog    Analog    Analog    Analog    Analog   
44HTSSOP: 85 mm2: 6.1 x 14(HTSSOP)    44HTSSOP: 113 mm2: 8.1 x 14(HTSSOP)    44HTSSOP: 113 mm2: 8.1 x 14(HTSSOP)    44HTSSOP: 85 mm2: 6.1 x 14(HTSSOP)    44HTSSOP: 85 mm2: 6.1 x 14(HTSSOP)