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TAS5709APHPR 데이터시트(PDF) 1 Page - Texas Instruments |
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TAS5709APHPR 데이터시트(HTML) 1 Page - Texas Instruments |
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1 / 61 page  1 FEATURES DESCRIPTION TAS5709, TAS5709A www.ti.com ..................................................................................................................................... SLOS599A – NOVEMBER 2008 – REVISED SEPTEMBER 2009 20-W STEREO DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC • Audio Input/Output – DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables – 20-W Into an 8- Ω Load From an 18-V Supply Speaker Protection, Easy Listening, – Wide PVDD Range, From 8 V to 24 V Night-Mode Listening – Efficient Class-D Operation Eliminates – Two-Band DRC: Sets Two Different Need for Heatsinks Thresholds for Low- and High-Frequency – Requires Only 3.3 V and PVDD Content – One Serial Audio Input (Two Audio – Autobank Switching: Preload Coefficients Channels) for Different Sample Rates. No Need to – Supports 8-kHz to 48-kHz Sample Rate Write New Coefficients to the Part When (LJ/RJ/I2S) Sample Rate Changes • Audio/PWM Processing – Autodetect: Automatically Detects – Independent Channel Volume Controls With Sample-Rate Changes. No Need for 24 dB to Mute External Microprocessor Intervention – Soft Mute (50% Duty Cycle) – Programmable 2-Band Dynamic Range Control The TAS5709 is a 20-W, efficient, digital audio-power amplifier for driving stereo bridge-tied speakers. One – 22 Programmable Biquads for Speaker EQ serial data input allows processing of up to two and Other Audio-Processing Features discrete audio channels and seamless integration to – Programmable Coefficients for DRC Filters most digital-audio processors and MPEG decoders. – Programmable Input and Output Mixers The device accepts a wide range of input data and data rates. A fully programmable data path routes – DC Blocking Filters these channels to the internal speaker drivers. – Support for 3D Effects The TAS5709 is a slave-only device receiving all – Pseudo Bass Support clocks from external sources. The TAS5709 operates • General Features with a PWM carrier between a 384-kHz switching rate – Serial Control Interface Operational Without and a 352-KHz switching rate, depending on the input sample rate. Oversampling combined with a MCLK fourth-order noise shaper provides a flat noise floor – Factory-Trimmed Internal Oscillator for and excellent dynamic range from 20 Hz to 20 kHz. Automatic Rate Detection The TAS5709A is identical in function to the – Surface Mount, 48-Pin, 7-mm × 7-mm TAS5709, but has a unique I2C device address. The HTQFP Package address of the TAS5709 is 0x36. The address of the – Thermal and Short-Circuit Protection TAS5709A is 0x3A. • Benefits – EQ: Speaker Equalization Improves Audio Performance 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. PRODUCTION DATA information is current as of publication date. Copyright © 2008–2009, 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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