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TAS5705PAPR 데이터시트(PDF) 1 Page - Texas Instruments |
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TAS5705PAPR 데이터시트(HTML) 1 Page - Texas Instruments |
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1 / 71 page  1 FEATURES DESCRIPTION TAS5705 www.ti.com ...................................................................................................................................................................................................... SLOS549 – JUNE 2008 20-W STEREO DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC Enables Automatic Detection of Incoming Sample Rates 23 • Audio Input/Output – Thermal and Short-Circuit Protection – 20-W Into an 8- Ω Load From an 18-V Supply • Benefits – Wide Power-Supply Range From (8 V to 23 V) – EQ: Speaker Equalization Improves Audio Performance – Efficient Class-D Operation Eliminates Need for Heat Sinks – DRC: Dynamic Range Compression. Enables Power Limiting, Speaker – Requires Only Two Power-Supply Rails Protection, Easy Listening, Night-Mode – Two Serial Audio Inputs (Four Audio Listening Channels) – Autobank Switching: Preload Coefficients – Supports 32-kHz–192-kHz Sample Rates for Different Sample Rates. No Need to (LJ/RJ/I2S) Write Any Coefficients to the Part When – Headphone PWM Outputs Sample Rate Changes. – Subwoofer PWM Outputs – Autodetect: Automatically Detects • Audio/PWM Processing Sample-Rate Changes. No Need for – Independent Channel Volume Controls With External Microprocessor Intervention 24-dB to –100-dB Range – Soft Mute (50% Duty Cycle) – Programmable Dynamic Range Control The TAS5705 is a 20-W, efficient, digital audio power amplifier for driving stereo bridge-tied speakers. Two – 16 Adaptable Biquads for Speaker EQ serial data inputs allow processing of up to four – Seven Biquads for Left and Right discrete audio channels and seamless integration to Channels most digital audio processors and MPEG decoders. – Two Biquads for Subwoofer Channel The device accepts a wide range of input data and clock rates. A fully programmable data path allows – Adaptive Coefficients for DRC Filters these channels to be routed to the internal speaker – Programmable Input and Output Mixers drivers or output via the line-level subwoofer or – DC Blocking Filters headphone PWM outputs. – Loudness Compensation for Subwoofer The TAS5705 is a slave-only device receiving clocks – Automatic Sample Rate Detection and from external sources. The TAS5705 operates at a 384-kHz switching rate for 32-, 48-, 96-,and 192-kHz Coefficient Banking for DRC and EQ data and 352.8-kHz switching rate for 44.1-, 88.2- • General Features and 176.4-kHz data. The 8× oversampling combined – Serial Control Interface Operational Without with the fourth-order noise shaper provides a flat MCLK noise floor and excellent dynamic range from 20 Hz to 20 kHz. – Factory-Trimmed Internal Oscillator 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 PurePath Digital is a trademark of Texas Instruments. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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