Datasheet

Installation

www.ti.com

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.

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.

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)

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).

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).

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.

25W Digital Input Amplifier with EQ and 2-Band DRC SLOU304–December 2010

Submit Documentation Feedback