TAS5715 - 具有扬声器均衡、双频带 DRC 和 DC 保护的 25W 立体声 I2S 音频放大器

TAS5715是TI德州仪器公司的一款无产品，TAS5715是具有扬声器均衡、双频带 DRC 和 DC 保护的 25W 立体声 I2S 音频放大器，本站介绍了TAS5715的封装应用图解、特点和优点、功能等，并给出了与TAS5715相关的TI元器件型号供参考。

TAS5715 - 具有扬声器均衡、双频带 DRC 和 DC 保护的 25W 立体声 I2S 音频放大器 - 无 - 中/高功率D类放大器 - 德州仪器

产品描述

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 20Hz to 20 kHz.

产品特性

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

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