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TAS5705

ACTIVE

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

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Data sheet

TAS5705

ACTIVE
Data sheet Order now

Product details

Audio input type Digital Input Architecture Class-D Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 23 Power stage supply (min) (V) 8 Load (min) (Ω) 6 Output power (W) 20 SNR (dB) 105 THD + N at 1 kHz (%) 0.24 Iq (typ) (mA) 30 Control interface Hardware, Software Closed/open loop Open Analog supply (min) (V) 3 Analog supply voltage (max) (V) 3.6 Sampling rate (max) (kHz) 192 Operating temperature range (°C) 0 to 85
Audio input type Digital Input Architecture Class-D Speaker channels (max) Stereo Rating Catalog Power stage supply (max) (V) 23 Power stage supply (min) (V) 8 Load (min) (Ω) 6 Output power (W) 20 SNR (dB) 105 THD + N at 1 kHz (%) 0.24 Iq (typ) (mA) 30 Control interface Hardware, Software Closed/open loop Open Analog supply (min) (V) 3 Analog supply voltage (max) (V) 3.6 Sampling rate (max) (kHz) 192 Operating temperature range (°C) 0 to 85
HTQFP (PAP) 64 144 mm² 12 x 12
  • Audio Input/Output
    • 20-W Into an 8- Load From an 18-V Supply
    • Wide Power-Supply Range From (8 V to 23 V)
    • Efficient Class-D Operation Eliminates Need for Heat Sinks
    • Requires Only Two Power-Supply Rails
    • Two Serial Audio Inputs (Four Audio Channels)
    • Supports 32-kHz–192-kHz Sample Rates (LJ/RJ/I2S)
    • Headphone PWM Outputs
    • Subwoofer PWM Outputs
  • Audio/PWM Processing
    • Independent Channel Volume Controls With 24-dB to –100-dB Range
    • Soft Mute (50% Duty Cycle)
    • Programmable Dynamic Range Control
    • 16 Adaptable Biquads for Speaker EQ
      • Seven Biquads for Left and Right Channels
      • Two Biquads for Subwoofer Channel
    • Adaptive Coefficients for DRC Filters
    • Programmable Input and Output Mixers
    • DC Blocking Filters
    • Loudness Compensation for Subwoofer
    • Automatic Sample Rate Detection and Coefficient Banking for DRC and EQ
  • General Features
    • Serial Control Interface Operational Without MCLK
    • Factory-Trimmed Internal Oscillator Enables Automatic Detection of Incoming Sample Rates
    • Thermal and Short-Circuit Protection
  • Benefits
    • EQ: Speaker Equalization Improves Audio Performance
    • DRC: Dynamic Range Compression. Enables Power Limiting, Speaker Protection, Easy Listening, Night-Mode Listening
    • Autobank 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 Intervention

All trademarks are the property of their respective owners.
  • Audio Input/Output
    • 20-W Into an 8- Load From an 18-V Supply
    • Wide Power-Supply Range From (8 V to 23 V)
    • Efficient Class-D Operation Eliminates Need for Heat Sinks
    • Requires Only Two Power-Supply Rails
    • Two Serial Audio Inputs (Four Audio Channels)
    • Supports 32-kHz–192-kHz Sample Rates (LJ/RJ/I2S)
    • Headphone PWM Outputs
    • Subwoofer PWM Outputs
  • Audio/PWM Processing
    • Independent Channel Volume Controls With 24-dB to –100-dB Range
    • Soft Mute (50% Duty Cycle)
    • Programmable Dynamic Range Control
    • 16 Adaptable Biquads for Speaker EQ
      • Seven Biquads for Left and Right Channels
      • Two Biquads for Subwoofer Channel
    • Adaptive Coefficients for DRC Filters
    • Programmable Input and Output Mixers
    • DC Blocking Filters
    • Loudness Compensation for Subwoofer
    • Automatic Sample Rate Detection and Coefficient Banking for DRC and EQ
  • General Features
    • Serial Control Interface Operational Without MCLK
    • Factory-Trimmed Internal Oscillator Enables Automatic Detection of Incoming Sample Rates
    • Thermal and Short-Circuit Protection
  • Benefits
    • EQ: Speaker Equalization Improves Audio Performance
    • DRC: Dynamic Range Compression. Enables Power Limiting, Speaker Protection, Easy Listening, Night-Mode Listening
    • Autobank 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 Intervention

All trademarks are the property of their respective owners.

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.

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* Data sheet 20-W stereo Digital Audio Power Amplifier With EQ and DRC datasheet (Rev. A) 04 Sep 2009
EVM User's guide TAS5705EVM - User Guide (Rev. A) 13 Jan 2009

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