TAS5710

TAS5710概述

20 -W立体声数字音频功率放大器 20-W STEREO DIGITAL AUDIO POWER AMPLIFIER

The is a 20-W, efficient, digital audio power amplifier for driving stereo bridge-tied speakers. A 32-bit datapath eliminates the need for pre-scaling before processing and preserves signal integrity without sacrificing dynamic range. A digital audio processor with fully programmable digital filters allows designers to custom tune speakers for optimum sound in small enclosures. A programmable DRC can adjust power levels for a scaleable design while also enabling night-mode listening modes.

The closed-loop architecture allows the device to operate from poorly regulated supplies. Figure 1 below shows the benefit of the feedback architecture when a noisy supply 1kHz, 500mVpp ripple modulates a 10kHz audio input. The figure shows a 40dB improvement in sideband suppression when compared to an open-loop design. This correlates directly to a 24dB improvement in distortion as seen in Figure 2.

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Audio Input/Output
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20-W Into an 8-Ω Load From an 18-V Supply
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Wide PVCC Range 10 V to 26 V
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Supports One Serial Audio Input 8 kHz - 48 kHz Sample Rates LJ/RJ/I2S
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Power-Stage Feedback Allows Operation From Poorly Regulated Power Supplies
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Audio/PWM Processing
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Factory-Trimmed Internal Oscillator for Automatic Rate Detection
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High-End 32-Bit Data Path Audio Processor
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18 Biquads for Speaker EQ
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Dynamic Range Control DRC
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Support for Pseudo Bass and 3D Effects
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Benefits
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EQ: Speaker Equalization for Better Sound
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2-Band DRC: Improved Bass Performance, Enables Speaker Protection and Night mode Listening
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Autobank Switching: Preloaded Coefficients for Three Different Sample Rates Eliminates the Need to Update Coefficients When Sample Rate Changes
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Autodetect: Automatically Detects Sample-Rate Changes Eliminating the Need for External Microprocessor Intervention
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Closed-Loop Power Stage: Enables Wide PVCC Operating Range and Reduced Power Supply Ripple Distortion
TAS5710数据文档
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