TAS5709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 TAS5709 is a 20-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 TAS5709 is a slave-only device receiving all clocks from external sources.The TAS5709 operates with a PWM carrier betweena 384-kHz switching rateand 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. The TAS5709A is identical in function to the TAS5709, but has a unique I2C device address.The address of the TAS5709 is 0x36.The address of the TAS5709A is 0x3A.

特性 Features

·Audio Input/Output ·20-WInto an 8- Load From an 18-V Supply
·Wide PVDD Range, From 8 V to 24 V
·Efficient Class-D Operation Eliminates Need for Heatsinks
· Requires Only 3.3 V and PVDD
·One Serial Audio Input (Two Audio Channels)
·Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I2S)

·Audio/PWM Processing ·Independent Channel Volume Controls With 24 dB to Mute
·Soft Mute (50% Duty Cycle)
·Programmable 2-Band Dynamic Range Control
·22 Programmable Biquads for Speaker EQ and Other Audio-Processing Features
·Programmable Coefficients for DRC Filters
·Programmable Input and Output Mixers
·DC Blocking Filters
·Support for 3D Effects
·Pseudo Bass Support

·General Features ·Serial Control Interface Operational Without MCLK
·Factory-Trimmed Internal Oscillatorfor 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:Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker Protection, Easy Listening, Night-Mode Listening
·Two-Band DRC: Sets 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