TPA3251 (供給中)

TPA3251 175-W ステレオ、350-W モノ PurePath™ HD アナログ入力パワー・ステージ

 

概要

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.

特長

  • Differential Analog Inputs
  • Total Output Power at 10%THD+N
    • 175-W Stereo into 4 Ω in BTL Configuration
    • 220-W Stereo into 3 Ω in BTL Configuration
    • 350-W Mono into 2 Ω in PBTL Configuration
  • Total Output Power at 1%THD+N
    • 140-W Stereo into 4 Ω in BTL Configuration
    • 175-W Stereo into 3 Ω in BTL Configuration
    • 285-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
    • 60 dB PSRR (BTL, No Input Signal)
    • <60 µV (A-Weighted) Output Noise
    • >111 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 36-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

詳細を表示

機能一覧 他の製品と比較 アナログ入力 クラス D

 
Power to Bridge Tied Load (Max) (W)
Power to Parallel Bridge Tied Load (Max) (W)
THD + N @ 1 kHz (%)
SNR (dB)
Speaker Channels (Max)
Power Stage Supply (Max) (V)
Analog Supply (V) (Min)
Analog Supply (V) (Max)
Closed/Open Loop
Control Interface
Supported Bridge Tied Load (Min) (Ohms)
Supported Parallel Bridge Tied Load (Min) (Ohms)
Output Power (W)
Dynamic Range (dB)
Iq (Typ) (mA)
Power to Single-Ended Load (Max) (W)
TPA3251 TPA3221 TPA3244 TPA3245 TPA3250 TPA3255
220    100    100    150    130    325   
355    200    160    230    189    600   
0.005    0.02    0.005    0.005    0.005    0.006   
111    108    110    112    110    112   
4    2    4    4    4    4   
36    30    30    30    36    53.5   
10.8    5    10.8    10.8    10.8    10.8   
13.2    30    13.2    13.2    13.2    13.2   
Closed    Closed    Closed    Closed    Closed    Closed   
Hardware    Hardware    Hardware    Hardware    Hardware    Hardware   
3    4    3    3    4    4   
2    2    2    2    3    2   
175    100    100    115    130    315   
115    110    111    113    112    113   
12.5      15    15    12.5    24   
84      39    55    42    130