Texas Instruments TPA3244超高清焊盘朝下D类放大器

Texas Instruments TPA3244超高清焊盘朝下D类放大器是一款高性能D类功率放大器，可实现真正的出众声音品质，具有D类音效。TPA3244采用高级集成式反馈设计并具备专有的高速栅极驱动器错误校正（PurePath™超高清）功能。该技术可在各类声频带内实现超低失真以及出色的音质。

With a 30V power supply, the device can drive up to a 2x110W peak into 4Ω load and 2x60W continuous into 8Ω load. The devices feature a 2VRMS analog input interface that works seamlessly with high-performance DACs like the Burr-Brown PCM52xx DAC Family from TI (PCM5242 / PCM5252).

In addition to excellent audio performance, the Texas Instruments TPA3244 achieves high power efficiency and very low power stage idle losses below 0.45W. This feature is achieved through the use of 65mΩ MOSFETs and an optimized gate driver scheme that achieves significantly lower idle losses than typical discrete implementations.

特性

Differential analog inputs
Total output power at 10%THD+N
- 60W stereo continuous into 8Ω in BTL
Configuration at 30V
- 110W stereo peak into 4Ω in BTL
Configuration at 30V
Total output power at 1%THD+N
- 50W stereo continuous into 8Ω in BTL
Configuration at 30V
- 90W stereo peak into 4Ω in BTL
Configuration at 30V
Advanced integrated feedback design with high-speed
Gate driver error correction
Frequency content from HD sources
- Ultra-low 0.005% THD+N at 1W into 4Ω and <0.01% THD+N to clipping
- 60dB PSRR (BTL, no input signal)
- < 55μV (A-Weighted) output noise
- > 110dB (A-Weighted) SNR

(PurePath™ Ultra-HD)
- Signal bandwidth up to 100kHz for high
Multiple configurations possible
- Stereo, Mono, 2.1 and 4xSE
Click and pop free startup and stop
94% efficient Class-D operation (8Ω)
Wide 12V to 30V 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