TAS5717

具有集成电容器的 TAS5717 数字输入立体声放大器，无耳机放大器

The /TAS5719 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.

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Audio Input/Output

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

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Wide PVDD Range, From 4.5 V to 26 V

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Efficient Class-D Operation Eliminates Need for Heatsinks

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Requires Only 3.3 V and PVDD

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One Serial Audio Input Two Audio Channels

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I2C Address Selection via PIN Chip Select

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

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External Headphone-Amplifier Shutdown Signal

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Integrated CAP-Free Headphone Amplifier

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Stereo Headphone Stereo 2-V RMS Line Driver Outputs

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Audio/PWM Processing

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Independent Channel Volume Controls With 24-dB to Mute

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Programmable Two-Band Dynamic Range Control

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14 Programmable Biquads for Speaker EQ

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Programmable Coefficients for DRC Filters

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DC Blocking Filters

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0.125-dB Fine Volume Support

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General Features

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Serial Control Interface Operational Without MCLK

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Factory-Trimmed Internal Oscillator for Automatic Rate Detection

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Surface Mount, 48-Pin, 7-mm × 7-mm HTQFP Package

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AD, BD, and Ternary PWM-Mode Support

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Thermal and Short-Circuit Protection

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Benefits

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EQ: Speaker Equalization Improves Audio Performance

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DRC: Dynamic Range Compression. Can Be Used As Power Limiter.

Enables Speaker Protection, Easy Listening, Night-Mode Listening

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DirectPath Technology: Eliminates Bulky DC Blocking Capacitors

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

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

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

High-Frequency Content

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