TAS5715数据手册开发板套件编程器的评估板-音频放大器规格书PDF

描述 Description

The TAS5715 is a 25-W, efficient, digital audio-power amplifier for driving stereo bridge-tied speakers. One serial data input allows processing of up to two discrete audio channels and seamless integration to most digital audio processors and MPEG decoders. The device accepts a wide range of input data and data rates. A fully programmable data path routes these channels to the internal speaker drivers. The TAS5715 is a slave-only device receiving all clocks from external sources. The TAS5715 operates with a PWM carrier between a 384-kHz switching rate and a 352-KHz switching rate, depending on the input sample rate. Oversampling combined with a fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20  kHz.

特性 Features

• Audio Input/Output
• 25-W Into an 8- Load From an 18-V Supply
• 50-W Support in PBTL Mode With 4- Load
• Wide PVDD Range, From 8 V to 26 V
• Efficient Class-D Operation Eliminates Need for Heatsinks
• Requires Only 3.3 V and PVDD
• One Serial Audio Input (Two Audio Channels)
• I2C Address Selection via PIN (Chip Select)
• Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I2S)
• Headphone PWM Outputs
• Dedicated Pin for External Headphone-Amplifier Shutdown
• Single-Filter PBTL Support

• Audio/PWM Processing
• Independent Channel Volume Controls With 24-dB to Mute
• Independent Headphone Volume
• Programmable Two-Band Dynamic Range Control
• Up to Eight User-Programmable Biquads per Channel
• Programmable Coefficients for DRC Filters
• DC Blocking Filters and PWM DC Detect
• CRC Checksum to Detect Biquad Coefficient Corruption

• General Features
• Serial Control Interface Operational Without MCLK
• Factory-Trimmed Internal Oscillator for Automatic Rate Detection
• Surface Mount, 48-Pin, 7-mm × 7-mm HTQFP Package
• Thermal and Short-Circuit Protection

• Benefits
• EQ: Speaker Equalization Improves Audio Performance
• DRC: Automatic Gain Limiter. Can Be Used As Power Limiter. Enables Speaker Protection, Easy Listening
• Two-Band DRC: Set Two Different Thresholds for Low- and High-Frequency Content
• Autobank Switching: Preload Coefficients for Different Sample Rates. No Need to Write New Coefficients to the Part When Sample Rate Changes
• Autodetect: Automatically Detects Sample-Rate Changes. No Need for External Microprocessor Intervention
• Single-Filter PBTL Support Reduces BOM Cost
• Thgermal Dissipation, Improving System Stability