Datasheet

I 2S- I N
I 2C
OSC
PWM- OUT
1- 2
PWM- HP
TAS1020B
TPA61 3 8 A2
TAS5548
EEPROM
LDO
5 V
3.3 V
U
S
B
Overview www.ti.com
1 Overview
The EVM demonstrates the TAS55548 device from Texas Instruments. The TAS55548 is an 8-channel
audio processor with ASRC and PWM output. This EVM has two outputs (Left and Right channels) via
3.5-mm headphone jack. For detailed information about the TAS5548 device, review the device data sheet
(SLES270).
The TPA3130D2 is a 15 W per channel, efficient stereo digital amplifier power stage for driving 2 bridge-
tied speakers or a single parallel bridge-tied load (BTL) and can drive a speaker with an impedance as low
as 3.2 Ω (8-Ω typical). The TPA3130D2 is available in a 32-pin TSSOP.
Figure 1. TAS5548EVM Printed-Circuit Board
The EVM, together with other TI components on this board, is a 2.0-channel digital audio processor
system. The digital input (I2S) comes from USB port via the TAS1020B. The 2-channel outputs go to the
TPA6138A2, headphones amplifier.
Figure 2. Complete EVM Signal Path
2
TAS5548-5558EVM SLOU351–October 2012
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