TAS5731M Datasheet, PDF (1/68 Pages) Texas Instruments – 2 * 30-W DIGITAL AUDIO POWER AMPLIFIER WITH DSP AND 2.1 MODE

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TAS5731M
SLOS838B – JULY 2013 – REVISED NOVEMBER 2013
2 × 30-W DIGITAL AUDIO POWER AMPLIFIER WITH DSP AND 2.1 MODE
Check for Samples: TAS5731M
FEATURES
1
•2 2-Ch I²S Input; 8-kHz to 48-kHz f_S
• 30-W Stereo, 8 Ω/24 V (THD+N = 10%)
• Up to 90% Efficient Operation
• Wide 8-V to- 24-V Supply Range; 3.3-V Digital
Supply
• Single-Device 2.1 Support (2 × SE + 1 × BTL)
• 80-mΩ R_DS(on) Device That Can Support 2-Ω SE
and 4-Ω BTL Modes
– 12 V / 2 Ω / 8 W With SE mode
– 12 V / 4 Ω / 15 W With BTL mode
• Speaker EQ (8 BQ per Channel), 2× DRCs
• Pin-to-Pin Compatible With the TAS5727 and
TAS5731
• Benefits
– Direct Connect to Digital Processor
– High Output Power From a Standard
Supply
– Eliminates Need for Heat Sink
– Advanced Processing Improves Audio
Experience
APPLICATIONS
• LCD TV
• LED TV
• Sound Bar
DESCRIPTION
The TAS5731M is a 30-W, efficient, digital-audio
stereo power amplifier for driving stereo bridge-tied
speakers. One serial data input allows processing of
up to two discrete audio channels and seamless
integration to most digital audio processors and
MPEG decoders. The device accepts a wide range of
input data and data rates. A fully programmable data
path routes these channels to the internal speaker
drivers.
The TAS5731M is a slave-only device receiving all
clocks from external sources. The TAS5731M
operates with a PWM carrier between a 384-kHz
switching rate and a 352-kHz switching rate,
depending on the input sample rate. Oversampling
combined with a fourth-order noise shaper provides a
flat noise floor and excellent dynamic range from
20 Hz to 20 kHz.
40
2.0 BTL Mode
35
R_L = 8Ÿ
T_A = 25ƒC
30
80
PBTL Mode
70
R_L = 4Ÿ
T_A = 25ƒC
60
25
50
20
40
15
30
10
20
5
2 Layer Continuous Power
4 Layer Continuous Power
Instantaneous Power
0
8
10 12 14 16 18 20 22 24
Supply Voltage (V)
C014
Figure 1. Power vs Supply Voltage (2.0 BTL Mode)
10
0
8
2 Layer Continuous Power
4 Layer Continuous Power
Instantaneous Power
10 12 14 16 18 20 22 24
Supply Voltage (V)
C039
Figure 2. Power vs Supply Voltage (PBTL Mode)
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.
PowerPAD is a trademark of Texas Instruments.
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 © 2013, Texas Instruments Incorporated