Texas Instruments TPA301 User Manual download pdf (Page 13)

Quick Start List for Platform

2-3

Quick Start

2.2 Quick Start List for Platform

Use the following steps when using the TPA301 EVM with the TI plug-n-play

audio amplifier evaluation platform (see the platform user’s guide, SLOU011,

for additional details). Numbered callouts for selected steps are shown in

Figure 2–1 and details appear in Chapter 3.

Platform preparations

1) Ensure that all external power sources are set to OFF and that the platform

power switch S1 is set to OFF

2) Install a TPA301 module in platform sockets U3 and U4 for stereo

operation (or a module in either U3 or U4 for single channel operation),

taking care to align the module pins correctly

3) Use switch S2 to select or bypass the signal conditioning EVM (U1)

4) Set control signal Polarity jumper JP8 to Hi

5) Set jumper JP6 to select the Mute control input (causes the TPA301 to

mute if a plug is inserted into platform headphone jack J10)

Table 2–2.Platform Jumper and Switch Settings for the TPA301

EVM JP6 JP7 JP8 S2 S3

TPA301 Mute X Hi Note 2 X

Notes: 1) X = Don’t care

2) Set S2 to ON when signal conditioning board is installed in U1; set S2

to OFF when no signal conditioning board is installed.

Power supply

6) Select and connect the power supply:

a) Connect an external regulated power supply set to a voltage between

2.5 V and 5.5 V to platform V

power input connector J6 taking care

to observe marked polarity, or

b) Install a voltage regulator EVM (SLVP097 or equiv.) in platform socket

U6. Install a 9-V battery in B1 or connect a 7 V – 12 V power source

to a platform V

power input J1 or J2 and jumper the appropriate

power input (see platform user’s guide)

Inputs and outputs

7) Ensure that signal source level adjustments and EVM gain, R4, are set to

minimum

8) Connect the audio source to left and right RCA phono jacks J3 and J5 or

stereo miniature phone jack J4

9) Connect 8-Ω – 32-Ω speakers to left and right RCA jacks J7 and J9 or to

stripped wire connectors J8

Power-up

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

to ON. If V

and an onboard 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.

11) Adjust the signal source level and EVM gain level (R4) as needed

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Texas Instruments TPA301 User Manual Page 13

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