Home Audio Audio amplifiers Speaker amps
Home
Audio
Audio amplifiers
Speaker amps

TAS5705

ACTIVE

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

Order now
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.

filter Find other Speaker amps
Download View video with transcript Video

Next Generation 20-W Stereo, 16V Open-Loop Digital Input Audio Class-D Amplifier with EQ and 3-Band AGL:  TAS5733L

Next Generation 25-W Stereo, 26V Open-Loop Digital Input Audio Class-D Amplifier with EQ and 3-Band AGL:  TAS5751M

Next Generation 25-W Stereo, 26V Open-Loop Digital Input Audio Class-D Amplifier with EQ, 3-Band AGL and Headphone Output:  TAS5753MD

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 2
Type Title Date
* 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

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Request
Package Pins CAD symbols, footprints & 3D models
HTQFP (PAP) 64 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos