Datasheet

Operation

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2 Operation

2.1 Quick-Start List for Stand-Alone Operation

2.1.1 Speaker Amplifier

Follow these steps to use the TPA2029D1EVM stand-alone or when connecting it into existing circuits or

equipment. Connections to the EVM can be made by inserting stripped wire or using banana plugs for the

power supply and output connections. The inputs accept standard RCA plugs.

2.1.2 Power Supply

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

2. Connect an external regulated power supply adjusted to 5 V to the module VDD and GND banana

jacks, taking care to observe marked polarity.

2.1.3 Evaluation Module Preparations

Inputs and Outputs

1. If connecting to a fully differential input or a grounded input (the shield of the RCA is GND), remove

jumpers JP1 from the EVM. If connecting to a floating source like a portable CD, install jumpers JP1.

After setting the JP1 jumper appropriately, connect the input source to the speaker inputs (IN) .

2. Connect a speaker across OUT+ and OUT-.

Control Inputs

1. Enable: Hold down switch EN to place the amplifier in shutdown. Release EN to reactivate the

amplifier.

2. AGC1/AGC2: Together, these terminals determine the AGC setting of the amplifier. See Table 1.

Installing the jumpers in position 0 sets the respective terminal to GND. Installing the jumpers in

position 1 sets the respective terminals to VDD.

Table 1. Gain Settings

AGC1 AGC2 Function

0 0 AGC Function disabled

0 1 AGC Limiter Function enabled

AGC, Limiter, and Compression Functions

1 0

enabled

AGC, Limiter, Compression, and Noise Gate

1 1

Functions enabled

2.1.4 Power Up

1. Verify correct voltage and input polarity, and turn on the external power supplies.

The EVM should begin operation.

2. Adjust the input signal.

3. Adjust the control inputs to the desired settings.

4. Adjust the amplifier AGC setting by installing/removing the jumpers, AGC1 and AGC2.

TPA2029D1 Audio Power Amplifier EVM SLOU284–December 2011

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