Datasheet

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OUTB

OUT A

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OUT A

Installation

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The maximum output-stage supply voltage depends on the speaker load resistance. Check the

recommended maximum supply voltage in the TAS5711 data sheet.

Table 1. Recommended Power Supplies

Description Voltage Limitations Current Recommendations

System power supply 5 V 1 A

Output power stage supply 8–26 V 4 A

(1)

The rated current corresponds to three channels, full scale.

2.1.3 Loudspeaker Connectors

CAUTION

All BTL 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 single-ended mode,

connect the positive terminal to one output on the TAS5711EVM (A, B, C, or D), and connect the negative

terminal to ground. When connecting a speaker in BTL mode, connect the speaker’s two terminals across

two outputs on the TAS5711EVM (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.

Figure 5. BTL Connection

Figure 6. SE Connection

2.1.4 USB Interface

The TAS5711 registers are accessed through I

C™ bus lines SDA and SCL. The USB circuit and USB

connector on the MC57xxPSIA board facilitates the connection between a host computer and the device.

The EVM USB circuit is powered by the 5-V USB line of the host PC and is independent of the power

supplies available on the board. The USB device that is used is a TAS1020B from Texas Instruments.

TAS5711EVM Evaluation Module SLOU280–January 2009

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