Texas Instruments TPA2008D2 User Manual download pdf (Page 16)

Quick Start List for Stand-Alone

2-4

Operation

- Evaluation Module Preparations

11) Use potentiometer R3 to set the volume. Turning R3 in the clockwise

direction will increase the volume. See Table 3–1 for voltage levels on the

VOLUME pin and corresponding gain settings.

12) If using an external DAC, adjust R3 to the center position by placing a

DMM across the VOLUME pin and ground and adjusting the

potentiometer until 25 kΩ is measured across the leads. Apply the external

source to the VOLUME pin.

Figure 2–2. Module Preparation

- Power Up

13) Verify correct voltage and input polarity and set the external power supply

to ON. If V

and an on-board regulator EVM are used to provide V

, set

platform power switch S1 to ON.

Platform LED2 should light indicating the presence of V

, and the evaluation

modules installed on the platform should begin operation.

14) Adjust the signal source level and potentiometer R3 as needed.

2.3 Quick Start List for Stand-Alone

Follow these steps to use the TPA2008D2 EVM stand-alone or when

connecting it into existing circuits or equipment. Connections to the

TPA2008D2 module header pins can be made via individual sockets,

wire-wrapping, or soldering to the pins, either on the top or the bottom of the

module circuit board. Numbered callouts for selected steps are shown in

Figure 2–3.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 25 26

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Texas Instruments TPA2008D2 User Manual Page 16