Texas Instruments TAS5715EVM Evaluation Module TAS5715EVM TAS5715EVM Datenbogen
Produktcode
TAS5715EVM
Installation
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Figure 4. Connecting TAS5715EVM to MC57xxPSIA
2.1.2
PSU Interface
The TAS5715EVM is powered by two power supplies connected to the MC57xx controller board: a 5V
power supply (VIN), and a 8V-to-26V (PVDD) power supply. The 3.3V level is generated from the 5V
supply by an on-board voltage regulator.
power supply (VIN), and a 8V-to-26V (PVDD) power supply. The 3.3V level is generated from the 5V
supply by an on-board voltage regulator.
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. See the
recommended maximum supply voltage in the TAS5715EVM data sheet.
recommended maximum supply voltage in the TAS5715EVM data sheet.
Table 1. Recommended Power Supplies
Description
Voltage Limitations (8-
Ω
Load)
Current Recommendations
System power supply
5V
1A
Output power stage supply
8–26V
4A
(1)
(1)
The rated current corresponds to two channels, full scale.
2.1.3
Loudspeaker Connectors
CAUTION
All speaker outputs are biased at VCC/2 and must not be connected to ground
(e.g., through an oscilloscope ground).
(e.g., through an oscilloscope ground).
Loudspeaker connections vary by device setup. When connecting a speaker in BTL mode, connect the
speaker terminals across two outputs on the TAS5715EVM (A and B or C and D).
speaker terminals across two outputs on the TAS5715EVM (A and B or C and D).
Speakers or loads can be connected to the outputs A-D with clip leads, or cables can be made
with female connectors (JST VHR-2N) that can mate to male connectors on the EVM board.
with female connectors (JST VHR-2N) that can mate to male connectors on the EVM board.
4
25W Digital Input Amplifier with EQ and 2-Band DRC
SLOU304 – December 2010
© 2010, Texas Instruments Incorporated