TPA3251 Series
175-W stereo, 350-W mono, 12- to 38-V supply, analog input Class-D Smart Audio Amplifier
Manufacturer: Texas Instruments
Catalog
175-W stereo, 350-W mono, 12- to 38-V supply, analog input Class-D Smart Audio Amplifier
Key Features
• Differential Analog InputsTotal Output Power at 10%THD+N175-W Stereo into 4 Ω in BTL Configuration220-W Stereo into 3 Ω in BTL Configuration350-W Mono into 2 Ω in PBTL ConfigurationTotal Output Power at 1%THD+N140-W Stereo into 4 Ω in BTL Configuration175-W Stereo into 3 Ω in BTL Configuration285-W Mono into 2 Ω in PBTL ConfigurationAdvanced Integrated Feedback Design with High-speed Gate Driver Error Correction(PurePath Ultra-HD)Signal Bandwidth up to 100 kHz for HighFrequency Content From HD SourcesUltra Low 0.005% THD+N at 1 W into 4 Ω and<0.01% THD+N to Clipping60 dB PSRR (BTL, No Input Signal)<60 µV (A-Weighted) Output Noise>111 dB (A Weighted) SNRMultiple Configurations Possible:Stereo, Mono, 2.1 and 4xSEClick and Pop Free Startup and Stop90% Efficient Class-D Operation (4 Ω)Wide 12-V to 36-V Supply Voltage OperationSelf-Protection Design (Including Undervoltage,Overtemperature, Clipping, and Short CircuitProtection) With Error ReportingEMI Compliant When Used With RecommendedSystem DesignDifferential Analog InputsTotal Output Power at 10%THD+N175-W Stereo into 4 Ω in BTL Configuration220-W Stereo into 3 Ω in BTL Configuration350-W Mono into 2 Ω in PBTL ConfigurationTotal Output Power at 1%THD+N140-W Stereo into 4 Ω in BTL Configuration175-W Stereo into 3 Ω in BTL Configuration285-W Mono into 2 Ω in PBTL ConfigurationAdvanced Integrated Feedback Design with High-speed Gate Driver Error Correction(PurePath Ultra-HD)Signal Bandwidth up to 100 kHz for HighFrequency Content From HD SourcesUltra Low 0.005% THD+N at 1 W into 4 Ω and<0.01% THD+N to Clipping60 dB PSRR (BTL, No Input Signal)<60 µV (A-Weighted) Output Noise>111 dB (A Weighted) SNRMultiple Configurations Possible:Stereo, Mono, 2.1 and 4xSEClick and Pop Free Startup and Stop90% Efficient Class-D Operation (4 Ω)Wide 12-V to 36-V Supply Voltage OperationSelf-Protection Design (Including Undervoltage,Overtemperature, Clipping, and Short CircuitProtection) With Error ReportingEMI Compliant When Used With RecommendedSystem Design
Description
AI
TPA3251 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 can drive up to 2 x 175 W into 4-Ω load and 2 x 220 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, TPA3251 achieves both high power efficiency and very low power stage idle losses below 1 W. This is achieved through the use of 60 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.
TPA3251 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 can drive up to 2 x 175 W into 4-Ω load and 2 x 220 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, TPA3251 achieves both high power efficiency and very low power stage idle losses below 1 W. This is achieved through the use of 60 mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.
