TAS5719

具有集成电容器的数字输入立体声放大器，无耳机放大器

The TAS5717/ is a 10-W/15-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 TAS5717/9 is a slave-only device receiving all clocks from external sources. The TAS5717/TAS5719 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.

.

Audio Input/Output

.

TAS5717 Supports 2×10 W and TAS5719 Supports 2×15 W Output

.

Wide PVDD Range, From 4.5 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

.

External Headphone-Amplifier Shutdown Signal

.

Integrated CAP-Free Headphone Amplifier

.

Stereo Headphone Stereo 2-V RMS Line Driver Outputs

.

Audio/PWM Processing

.

Independent Channel Volume Controls With 24-dB to Mute

.

Programmable Two-Band Dynamic Range Control

.

14 Programmable Biquads for Speaker EQ

.

Programmable Coefficients for DRC Filters

.

DC Blocking Filters

.

0.125-dB Fine Volume Support

.

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

.

AD, BD, and Ternary PWM-Mode Support

.

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

.

DirectPath Technology: Eliminates Bulky DC Blocking Capacitors

.

Stereo Headphone/Stereo Line Drivers: Adjust Gain via External Resistors,

Dedicated Active Headpone Mute Pin, High Signal-to-Noise Ratio

.

Two-Band DRC: Set Two Different Thresholds for Low- and

High-Frequency Content

FilterPro is a trademark of Texas Instruments.