TAS5704 Power Amplifier Datasheet

TAS5704 Datasheet, PDF, Equivalent


Part Number

TAS5704

Description

20-W Stereo Digital Audio Power Amplifier

Manufacture

etcTI

Total Page 30 Pages
Datasheet
Download TAS5704 Datasheet


TAS5704
TAS5704
www.ti.com
SLOS563A – MARCH 2008 – REVISED AUGUST 2010
20-W Stereo Digital Audio Power Amplifier With Feedback
Check for Samples: TAS5704
FEATURES
1
2 Audio Input/Output
– 20-W into an 8-Load From an 18-V Supply
– Two Serial Audio Inputs (Four Audio
Channels)
– Supports Multiple Output Configurations:
– 2-Ch Bridged Outputs (20 W × 2)
– 4-Ch Single-Ended Outputs (10 W × 4)
– 2-Ch Single-Ended + 1-Ch Bridged (2.1)
(10 W × 2 + 20 W)
• 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
– Lower EMC Emissions
– Output Power is Independent of Supply
Voltage Variation
• Wide PVCC Range From (10 V to 26 V)
• Supports 32-kHz–192-kHz (DVD-Audio) Sample
Rates (LJ/RJ/I2S)
• Line-Level Subwoofer PWM Outputs
• Audio/PWM Processing (Hardware Controlled)
– 4-Step Gain Control (-3dB, 3dB, 9dB, 12dB)
– Soft Mute Control (50% Output Duty Cycle)
• Factory-Trimmed Internal Oscillator Enables
Automatic Detection of Incoming Sample
Rates
• Thermal and Short-Circuit Protection
spacer
DESCRIPTION
The TAS5704 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 accepting a wide range
of input data and clock rates. A hardware
configurable data path allows these channels to be
routed to the internal speaker drivers or output via the
subwoofer PWM outputs.
The TAS5704 is a slave-only device receiving all
clocks from external sources. The TAS5704 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.
The closed-loop architecture of the TAS5704
provides several benefits. The high power supply
rejection enables superior audio performance from a
noisy, low cost supply. The high damping factor
allows tighter control over speaker movement
resulting in an improved bass response. Finally,
switching edge rate control lowers EMC emissions
without sacrificing 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.
System Two, Audio Precision are trademarks of Audio Precision, Inc.
2
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 © 2008–2010, Texas Instruments Incorporated

TAS5704
TAS5704
SLOS563A – MARCH 2008 – REVISED AUGUST 2010
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
3.3 V
10 V–26 V
DVDD/AVDD
AVCC/PVCC
Digital
Audio
Source
(TAS3x08)
Control
Inputs
LRCLK
SCLK
MCLK
SDIN1
SDIN2
OUT_A
BST_A
BST_B
OUT_B
OUT_C
BST_C
GAIN_x (2 pins)
MUTE
FORMATx (3 pins)
RESET
PDN
CONFIG_x (2 pins)
BST_D
OUT_D
SUB_PWM+
Loop
Filter
PLL_FLTP
PLL_FLTM
SUB_PWM–
BKND_ERR
VALID
LCBTL*
Left
LCBTL*
Right
TAS5601
10 V–26 V
PWM_AP
PWM_AN
PWM_BP
PWM_BN
FAULT
RESET
OUT_A
BST_A
BST_B
OUT_B
LCBTL*
Subwoofer
* Refer to TI Application Note (SLOA119) on LC filter design for BTL (AD/BD mode) configuration.
B0264-02
2 Submit Documentation Feedback
Product Folder Link(s): TAS5704
Copyright © 2008–2010, Texas Instruments Incorporated


Features TAS5704 www.ti.com SLOS563A – MARCH 2008 – REVISED AUGUST 2010 20-W Stere o Digital Audio Power Amplifier With Fe edback Check for Samples: TAS5704 FEAT URES 1 •2 Audio Input/Output – 20-W into an 8-Ω Load From an 18-V Supply – Two Serial Audio Inputs (Four Audi o Channels) – Supports Multiple Outpu t Configurations: – 2-Ch Bridged Outp uts (20 W × 2) – 4-Ch Single-Ended O utputs (10 W × 4) – 2-Ch Single-Ende d + 1-Ch Bridged (2.1) (10 W × 2 + 20 W) • Closed Loop Power Stage Architec ture – Improved PSRR Reduces Power Su pply Performance Requirements – Highe r Damping Factor Provides for Tighter, More Accurate Sound With Improved Bass Response – Lower EMC Emissions – Ou tput Power is Independent of Supply Vol tage Variation • Wide PVCC Range From (10 V to 26 V) • Supports 32-kHz–1 92-kHz (DVD-Audio) Sample Rates (LJ/RJ/ I2S) • Line-Level Subwoofer PWM Outpu ts • Audio/PWM Processing (Hardware C ontrolled) – 4-Step Gain Control (-3dB, 3dB, 9dB, 12dB) – Soft Mute Control (50% Output Duty Cycle) • Fact.
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