TAS5707PHPR具有 EQ 和 DRC(软件控制)的 20W 立体声数字音频功率放大器

描述

The TAS5707 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 TAS5707 is a slave-only device receiving all clocks from external sources. The TAS5707 operates with a PWM carrier between a 384-kHz switching rate and 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 TAS5707A is identical in function to the HTQFP packaged TAS5707, but has a unique I2C device address. The address of the TAS5707 is 0x36. The address of the TAS5707A is 0x3A.

特性

Audio Input/Output20-W Into an 8- Load From an 18-V Supply

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)

Supports 8-kHz to 48-kHz Sample Rate (LJ/RJ/I2S)

Audio/PWM ProcessingIndependent Channel Volume Controls With 24 dB to Mute

Soft Mute (50% Duty Cycle)

Programmable Dynamic Range Control

14 Programmable Biquads for Speaker EQ and Other Audio Processing Features

Programmable Coefficients for DRC Filters

DC Blocking Filters

General FeaturesSerial 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

BenefitsEQ: Speaker Equalization Improves Audio Performance

DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker Protection, Easy Listening, Night-Mode Listening

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

APPLICATIONSTelevision

iPod Dock

Sound Bar​

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