TAS5710 Datasheet | Texas Instruments

SLOS605 - JANUARY 2009 20-W STEREO DIGITAL AUDIO POWER AMPLIFIER WITH EQ/DRC and FEEDBACK Features - Audio Input/Output - 20-W Into an 8-Ω Load From an 18-V Supply - Wide PVCC Range (10 V to 26 V) - Supports One Serial Audio Input (8 k Hz - 48 k Hz Sample Rates) (LJ/RJ/I2S) - Power-Stage Feedback Allows Operation From Poorly Regulated Power Supplies - Audio/PWM Processing - Factory-Trimmed Internal Oscillator for Automatic Rate Detection - High-End 32-Bit Data Path Audio Processor - 18 Biquads for Speaker EQ - Dynamic Range Control (DRC) - Support for Pseudo Bass and 3D Effects - Benefits - EQ: Speaker Equalization for Better Sound - 2-Band DRC: Improved Bass Performance, Enables Speaker Protection and Night mode Listening - Autobank Switching: Preloaded Coefficients for Three Different Sample Rates Eliminates the Need to Update Coefficients When Sample Rate Changes - Autodetect: Automatically Detects Sample-Rate Changes Eliminating the Need for External Microprocessor Intervention - Closed-Loop Power Stage: Enables Wide PVCC Operating Range and Reduced Power Supply Ripple Distortion DESCRIPTION The TAS5710 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...