TPA3245 115W Stereo / 230W Mono Ultra-HD, Analog-In Class-D Amplifier | TI.com

TPA3245 (ACTIVE)

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

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

Recommended alternative parts

  • TPA3221  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   For an analog-input, Class-D amplifier with comparable output power and up to 100-W stereo, see the TPA3221.

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.

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 Speaker Amps

 
Audio Input Type
Architecture
Speaker Channels (Max)
Power Stage Supply (Min) (V)
Power Stage Supply (Max) (V)
Output Power (W)
Load (Min) (ohms)
SNR (dB)
THD + N @ 1 kHz (%)
Iq (Typ) (mA)
Control Interface
Closed/Open Loop
Analog Supply (V) (Min)
Analog Supply (V) (Max)
Power to Parallel Bridge Tied Load (Max) (W)
PSRR (dB)
Operating Temperature Range (C)
Rating
TPA3245 TPA3220 TPA3221 TPA3244 TPA3250 TPA3251 TPA3255
Analog Input     Analog Input     Analog Input     Analog Input     Analog Input     Analog Input     Analog Input    
Class-D     Class-D     Class-D     Class-D     Class-D     Class-D     Class-D    
4     Stereo     Stereo     4     4     4     4    
12     7     7     12     12     12     18    
30     30     30     30     36     36     53.5    
115     100     100     100     130     175     315    
1.5     1     1     1.5     1.5     1.5     4    
112     108     108     110     110     111     112    
0.005     0.02     0.02     0.005     0.005     0.005     0.006    
15       15     15     12.5     12.5     24    
Hardware     Hardware     Hardware     Hardware     Hardware     Hardware     Hardware    
Closed     Closed     Closed     Closed     Closed     Closed     Closed    
10.8     5     5     10.8     10.8     10.8     10.8    
13.2     30     30     13.2     13.2     13.2     13.2    
230     200     200     160     189     355     600    
60     60     60     60     60     80     80    
0 to 70     -40 to 85     -40 to 85     0 to 70     0 to 70     0 to 70     0 to 70    
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