Texas Instruments TAS5548/58 8通道高清音频处理器

德州仪器 TAS5548和TAS5558兼容高清音频处理器是一款8通道数字脉宽调制器(PWM)，它带有数字音频处理和采样率转换器，既有高级性能和又有很高的系统集成度。TI TAS5548和TAS5558可以和大部分数字音频解码器无缝对接。器件支持用于蓝光HTiB应用的DTS-HD规格。采样率转换器由两个分开的模块组成，每个模块负责4个通道。TAS5548和TAS5558能够支持两种不同的输入采样率。这些器件可驱动8个通道H桥功率级。它们还提供了一个高性能的差分输出，用于驱动一个外部、差分输入、模拟的头戴式耳机放大器。

特性

General Features:
- 8ch Asynchronous Sample Rate Converter
- 8 Channel Audio Processing for 32-192 kHz (ARSC to 96kHz)
- 4 Channel Native Audio Processing at 192kHZ
- 30 kHz Audio Bandwidth for DTS-HD Compatibility
Audio Input/Output:
- Up to Five Synchronous Serial Audio Inputs (10 Channels)
- Up to One Synchronous Serial Audio Outputs (2 Channels)
- I2S Master Mode When Used With External Crystal
- Slave Mode 32-192KHz With Auto/Manual Sample Rate Detection
- Eight Differential PWM Output That can Support AD or BD Modulation
- Two Differential PWM Headphone Outputs
Audio Processing:
- Volume Control Range 18dB to –127dB (Master and Eight Channel Volume)
- Bass and Treble Tone Controls With ±18dB Range, Selectable Corner Frequencies
- Configurable Loudness Compensation
PWM Processing
- >105dB Dynamic Range
- THD+N < 0.1% (0–40 kHz)
- 20Hz–40kHz, Flat Noise Floor for 32KHz-192KHz