Texas Instruments TAS5548/58 8-Channel HD Audio Processors

Texas Instruments TAS5548 and TAS5558 HD-compatible audio processors are 8-channel digital Pulse-Width Modulators (PWMs) with digital audio processing and sample rate converters that provide both advanced performance and a high level of system integration. TI TAS5548 and TAS5558 are designed to interface seamlessly with most digital audio decoders. The devices support DTS-HD specification for Blu-ray HTiB applications. The sample rate converters consist of two separate modules that handle 4 channels each. TAS5548 and TAS5558 can support two different input sampling rates. These TI devices can drive 8 channels of H-bridge power stages. They also provide a high-performance, differential output to drive an external, differential-input, analog headphone amplifier.

Features

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