Datasheet

0.5

1.5

2.5

3.5

4 9 14 19 24 29

R -LoadResistance-

P -OutputPower-W

V =5V,10%

V =5V,1%

V =3.6V,10%

V =2.5V,10%

V =3.6V,1%

V =2.5V,1%

Operation

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Figure 1. TPA2035D1 Output Power

2 Operation

This section describes how to operate the TPA2035D1EVM.

2.1 Quick Start for Stand-Alone Operation

Use the following steps when operating the TPA2035D1EVM stand-alone or when connecting the EVM

into existing circuits or equipment.

2.1.1 Power and Ground

1. Ensure that the external power sources are set to OFF.

2. Set the power supply voltage between 2.5 V and 5.5 V. When connecting the power supply to the

EVM, attach the ground connection to the GND header pin first, and then connect the positive supply

to the VDD header pin. Verify that the connections are made to the correct header pins.

2.1.2 Inputs and Outputs

2.1.2.1 Audio

1. Ensure that the audio source is set to the minimum level.

2. Connect the audio source to the inputs, IN+/-.

• For a differential audio source, connect the audio source directly to the appropriate input header

pins.

• For a single-ended audio source, connect the audio source to the negative input header pin and

ground the positive audio input header pin.

3. Connect speakers (4 Ω-32 Ω) to the output pins, OUT+/-.

2.1.2.2 Shutdown Control

The TPA2035D1 provides a shutdown control so that the device can be placed into a shutdown mode.

The shutdown pin, SD , is an active low pin. This means that a low voltage (ground) on this pin places the

device into a shutdown mode. Using the pushbutton provided on the EVM, the user can place the

TPA2035D1 in shutdown mode by pressing and holding the button down. When the button is released, the

device restarts.

TPA2035D1 Audio Power Amplifier Evaluation Module SLOU237A–August 2008–Revised December 2009

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