TAS5705 Series

20-W stereo, 8- to 23-V supply, digital input, open loop Class-D audio amplifier w/ speaker EQ & DRC

Catalog

20-W stereo, 8- to 23-V supply, digital input, open loop Class-D audio amplifier w/ speaker EQ & DRC

Part	Features	Output Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Max Output Power x Channels @ Load	Supplier Device Package	Mounting Type	Type	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]
Texas Instruments TAS5705PAPR	Depop I2C I2S Mute PWM Short-Circuit and Thermal Protection Volume Control	2-Channel (Stereo) with Stereo Headphones and Subwoofer	8 V	23 V	2 8 Ohm 20 W	64-HTQFP (10x10)	Surface Mount	Class D	64-PowerTQFP	0 °C	85 C

Catalog

20-W stereo, 8- to 23-V supply, digital input, open loop Class-D audio amplifier w/ speaker EQ & DRC

Key Features

• Audio Input/Output20-W Into an 8-Load From an 18-V SupplyWide Power-Supply Range From (8 V to 23 V)Efficient Class-D Operation Eliminates Need for Heat SinksRequires Only Two Power-Supply RailsTwo Serial Audio Inputs (Four Audio Channels)Supports 32-kHz–192-kHz Sample Rates (LJ/RJ/I2S)Headphone PWM OutputsSubwoofer PWM OutputsAudio/PWM ProcessingIndependent Channel Volume Controls With 24-dB to –100-dB RangeSoft Mute (50% Duty Cycle)Programmable Dynamic Range Control16 Adaptable Biquads for Speaker EQSeven Biquads for Left and Right ChannelsTwo Biquads for Subwoofer ChannelAdaptive Coefficients for DRC FiltersProgrammable Input and Output MixersDC Blocking FiltersLoudness Compensation for SubwooferAutomatic Sample Rate Detection and Coefficient Banking for DRC and EQGeneral FeaturesSerial Control Interface Operational Without MCLKFactory-Trimmed Internal Oscillator Enables Automatic Detection of Incoming Sample RatesThermal and Short-Circuit ProtectionBenefitsEQ: Speaker Equalization Improves Audio PerformanceDRC: Dynamic Range Compression. Enables Power Limiting, Speaker Protection, Easy Listening, Night-Mode ListeningAutobank Switching: Preload Coefficients for Different Sample Rates. No Need to Write Any Coefficients to the Part When Sample Rate Changes.Autodetect: Automatically Detects Sample-Rate Changes. No Need for External Microprocessor InterventionAll trademarks are the property of their respective owners.Audio Input/Output20-W Into an 8-Load From an 18-V SupplyWide Power-Supply Range From (8 V to 23 V)Efficient Class-D Operation Eliminates Need for Heat SinksRequires Only Two Power-Supply RailsTwo Serial Audio Inputs (Four Audio Channels)Supports 32-kHz–192-kHz Sample Rates (LJ/RJ/I2S)Headphone PWM OutputsSubwoofer PWM OutputsAudio/PWM ProcessingIndependent Channel Volume Controls With 24-dB to –100-dB RangeSoft Mute (50% Duty Cycle)Programmable Dynamic Range Control16 Adaptable Biquads for Speaker EQSeven Biquads for Left and Right ChannelsTwo Biquads for Subwoofer ChannelAdaptive Coefficients for DRC FiltersProgrammable Input and Output MixersDC Blocking FiltersLoudness Compensation for SubwooferAutomatic Sample Rate Detection and Coefficient Banking for DRC and EQGeneral FeaturesSerial Control Interface Operational Without MCLKFactory-Trimmed Internal Oscillator Enables Automatic Detection of Incoming Sample RatesThermal and Short-Circuit ProtectionBenefitsEQ: Speaker Equalization Improves Audio PerformanceDRC: Dynamic Range Compression. Enables Power Limiting, Speaker Protection, Easy Listening, Night-Mode ListeningAutobank Switching: Preload Coefficients for Different Sample Rates. No Need to Write Any Coefficients to the Part When Sample Rate Changes.Autodetect: Automatically Detects Sample-Rate Changes. No Need for External Microprocessor InterventionAll trademarks are the property of their respective owners.

Description

The TAS5705 is a 20-W, efficient, digital audio power amplifier for driving stereo bridge-tied speakers. Two serial data inputs allow processing of up to four discrete audio channels and seamless integration to most digital audio processors and MPEG decoders. The device accepts a wide range of input data and clock rates. A fully programmable data path allows these channels to be routed to the internal speaker drivers or output via the line-level subwoofer or headphone PWM outputs. The TAS5705 is a slave-only device receiving clocks from external sources. The TAS5705 operates at a 384-kHz switching rate for 32-, 48-, 96-,and 192-kHz data and 352.8-kHz switching rate for 44.1-, 88.2- and 176.4-kHz data. The 8× oversampling combined with the fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20 kHz. The TAS5705 is a 20-W, efficient, digital audio power amplifier for driving stereo bridge-tied speakers. Two serial data inputs allow processing of up to four discrete audio channels and seamless integration to most digital audio processors and MPEG decoders. The device accepts a wide range of input data and clock rates. A fully programmable data path allows these channels to be routed to the internal speaker drivers or output via the line-level subwoofer or headphone PWM outputs. The TAS5705 is a slave-only device receiving clocks from external sources. The TAS5705 operates at a 384-kHz switching rate for 32-, 48-, 96-,and 192-kHz data and 352.8-kHz switching rate for 44.1-, 88.2- and 176.4-kHz data. The 8× oversampling combined with the fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20 kHz.