Texas Instruments TA5704EVM - Manual (Page 9)

1.2 Basic Tools for Initial Board Power up
2 System Interfaces
2.1 PSU Interface
www.ti.com System Interfaces
Figure 4. Top Composite View of TAS5704EVM
•
Up to 26V, 3A power supply (PVCC)
•
5V, 500mA power supply (VIN)
•
Banana cables for power supplies and speakers
•
Optical or coaxial cable for SPDIF interface based on signal source
•
Two 8 Ω speakers (BTL) or 4
Ω
speakers (SE). Resistive loads can also be used
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Optional: TAS5601EVM2 (for subwoofer connection when using BTL configuration)
This chapter describes the TAS5704EVM board in regards to power supply (PSU) and system interfaces.
The TAS5704EVM module is powered using two power supply sources a 10–26V (PVCC) power supply
and a 5V (VIN) power supply. The 3.3V voltage levels are generated on the board using voltage regulators
from VIN supply.
Note: The length of power supply cable must be minimized. Increasing length of PSU cable is
equal to increasing the distortion for the amplifier at high output levels and low frequencies.
Maximum output stage supply voltage depends on the speaker load resistance. Check the recommended
maximum supply voltage in the TAS5704 data sheet (
SLOS563 ).
SLOU224 – April 2008 TA5704EVM 4-Channel Digital Audio Power Amplifier with Hardware Control 9
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