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| TAS5731M_15 Datasheet, PDF (67/81 Pages) Texas Instruments – TAS5731M 2 × 30-W Digital Audio Power Amplifier With DSP and 2.1 Mode | |||
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TAS5731M
SLOS838C â JULY 2013 â REVISED AUGUST 2015
10.2.3 2.1 Application
A 2.1 system generally refers to a system in which there are two full range speakers with a separate amplifier
path for the speakers which reproduce the low-frequency content. In this system, two channels are presented to
the amplifier via the digital input signal, these are driven into two single-ended speakers and are mixed into a
third channel, conditioned to stream low-frequency content into a differentially connected speaker.
The 2.1 application is shown in Figure 72.
3.3 V
8 Vâ24 V
AVDD/DVDD
PVDD
Digital
Audio
Source
I2C
Control
LRCLK
SCLK
MCLK
SDIN
SDA
SCL
OUT_A
BST_A
BST_B
OUT_B
LCSE
PVDD
LCSE
PVDD
Control
Inputs
Loop
Filter
RESET
PDN
PLL_FLTP
PLL_FLTM
OUT_C
BST_C
BST_D
OUT_D
LCBTL
Figure 72. Simplified 2.1 Application Diagram
10.2.3.1 Design Requirements
SPACE
Table 28. Design Requirements
PARAMETER
Low Power Supply
High Power Supply
Host Processor
Output Filters
Speaker
EXAMPLE
3.3 V
8 V to 24 V
I2S Compliant Master
I2C Compliant Master
GPIO Control
Inductor-Capacitor Low Pass Filter
4 Ω (BTL), 2 Ω (SE) minimum
B0264-25
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