2.1.2
PSU Interface
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Installation
Figure 4. Connecting TAS5708(TAS5710)EVM to MC57xxPSIA
The TAS5708(TAS5710)EVM is powered by two power supplies connected to the MC57xx controller
board: a 5-V power supply (VIN) and a 10-V to 26-V (PVCC) power supply. The 3.3-V level is generated
on the board by a voltage regulator from the 5-V supply.
Note:
The power-supply cable length must be minimized. Increasing the length of the PSU cable
increases the distortion of the amplifier at high output levels and low frequencies
The maximum output-stage supply voltage depends on the speaker load resistance. Check the
recommended maximum supply voltage in the TAS5708/10 (
) data sheet.
Table 1. Recommended Power Supplies
Description
Voltage Limitations (8-
Ω
Load)
Current Recommendations
System power supply
5 V
1 A
Output power stage supply
10–26 V
4 A
(1)
(1)
The rated current corresponds to two channels, full scale.
SLOU232A – January 2009 – Revised January 2009
TAS5708(TAS5710)EVM
5