TAS5706B Power Amplifier Datasheet

TAS5706B Datasheet, PDF, Equivalent


Part Number

TAS5706B

Description

20-W Stereo Digital Audio Power Amplifier

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download TAS5706B Datasheet


TAS5706B
TAS5706A is Not Recommended for New Designs
TAS5706A
TAS5706B
www.ti.com............................................................................................................................................. SLOS606D – MARCH 2009 – REVISED SEPTEMBER 2009
20-W Stereo Digital Audio Power Amplifier with EQ and DRC
FEATURES
1
23 Audio Input/Output
– 20-W into an 8-Load From an 18-V Supply
– Two Serial Audio Inputs (Four Audio
Channels)
TAS5706A Supports:
– 2-Ch Bridged Outputs (20 W × 2)
TAS5706B Supports:
– 2-Ch Bridged Outputs (20 W × 2)
– 4-Ch Single-Ended Outputs (10 W × 4)
– 2-Ch Single-Ended + 1-Ch Bridged (2.1
Mode) (10 W × 2 + 20 W)
Supports 32-kHz–192-kHz Sample Rates
(LJ/RJ/I2S)
Closed Loop Power Stage Architecture
– Improved PSRR Reduces Power Supply
Performance Requirements
– Higher Damping Factor Provides for
Tighter, More Accurate Sound With
Improved Bass Response
– Constant Output Power Over Variation in
Supply
Wide PVCC Range From (10 V to 26 V)
– No Separate Supply Required for Gate
Drive
Headphone PWM Outputs
Subwoofer PWM Outputs
AM Interference Avoidance Support
Audio/PWM Processing
– Independent Channel Volume Controls With
48-dB to –79-dB Range—Soft Mute (50%
Duty Cycle)
– Programmable Dynamic Range Control
– 7 Programmable Biquads for Speaker
Equalization for Left and Right Channels
– 4 Programmable Biquads for Bass
Processing
– Adaptive Biquad Coefficients for EQ and
DRC Filters
– Programmable Input and Output Mixers
– Automatic Sample-Rate Detection and
Coefficient Banking
General Features
– Serial Control Interface Operational Without
MCLK
– Factory-Trimmed Internal Oscillator Avoids
the Need for External Crystal
– Surface Mount, 64-Terminal, 10-mm ×
10-mm HTQFP Package
– Thermal and Short-Circuit Protection
DESCRIPTION
The TAS5706A/B is a 20-W, efficient, digital audio
power amplifier for driving stereo bridged-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, accepting 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 subwoofer or
headphone PWM outputs.
The TAS5706A/B is a slave-only device receiving all
clocks from external sources. The TAS5706A/B
operates at a 384-kHz switching rate for 32-, 48-, 96-,
and 192-kHz data, and at a 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.
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.
PurePath Digital is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009, Texas Instruments Incorporated

TAS5706B
TAS5706A
TAS5706B
TAS5706A is Not Recommended for New Designs
SLOS606D – MARCH 2009 – REVISED SEPTEMBER 2009............................................................................................................................................. www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
SIMPLIFIED APPLICATION DIAGRAMS
Bridge-Tied Load (BTL) Mode (TAS5706A/TAS5706B)
3.3 V
10 V–26 V
DVDD/AVDD
AVCC/PVCC
Digital
Audio
Source
I2C
Control
Control
Inputs
LRCLK
SCLK
MCLK
SDIN1
SDIN2
SDA
SCL
MUTE
HPSEL
RESET
PDN
Loop
Filter
PLL_FLTP
PLL_FLTM
OUT_A
BST_A
BST_B
OUT_B
OUT_C
BST_C
BST_D
OUT_D
SUB_PWM+
SUB_PWM–
BKND_ERR
VALID
LCBTL*
Left
LCBTL*
Right
TAS5602
10 V–26 V
PWM_AP
PWM_AN
PWM_BP
PWM_BN
FAULT
RESET
OUT_A
BST_A
BST_B
OUT_B
LCBTL*
Subwoofer
HPR_PWM
HPL_PWM
RC
Filter
TPA6110A2
(HP Amplifier)
* Refer to TI Application Note (SLOA119) on LC filter design for BTL (AD/BD mode) configuration.
2 Submit Documentation Feedback
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): TAS5706A TAS5706B


Features TAS5706A is Not Recommended for New Desi gns TAS5706A TAS5706B www.ti.com..... ....................................... ....................................... ....................................... ................... SLOS606D – MARCH 2009 – REVISED SEPTEMBER 2009 20-W St ereo Digital Audio Power Amplifier with EQ and DRC FEATURES 1 •23 Audio Inp ut/Output – 20-W into an 8-Ω Load F rom an 18-V Supply – Two Serial Audio Inputs (Four Audio Channels) • TAS57 06A Supports: – 2-Ch Bridged Outputs (20 W × 2) • TAS5706B Supports: – 2-Ch Bridged Outputs (20 W × 2) – 4- Ch Single-Ended Outputs (10 W × 4) – 2-Ch Single-Ended + 1-Ch Bridged (2.1 Mode) (10 W × 2 + 20 W) • Supports 3 2-kHz–192-kHz Sample Rates (LJ/RJ/I2S ) • Closed Loop Power Stage Architect ure – Improved PSRR Reduces Power Sup ply Performance Requirements – Higher Damping Factor Provides for Tighter, M ore Accurate Sound With Improved Bass R esponse – Constant Output Power Over Variation in Supply • Wide PVCC Range From (10 V to 26 V) – No S.
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