Texas Instruments TPA301 manual Quick Start List for Stand-Alone

Quick Start List for Stand-Alone

2.3 Quick Start List for Stand-Alone

Use the following steps to use the TPA301 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA301 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 2–2 and details appear in Chapter 3.

Figure 2–2.Quick Start Module Map

-

						2
		Shutdown		+5 V		GND
5				C6			R5
					C3		C5
	S1
							DL
	R1
							OUT–
	C2
							GND
	R2			C4	U1			6	7
							OUT+
	C1			R3			Lit.#
			–3				SLOP 115
		IN+
4			R4
		GND
							EVM
		TPA301

Gain Adjust

Power supply

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

2)Connect an external regulated power supply set to 5 V to the module +5V

-and GND pins taking care to observe marked polarity

Inputs and outputs

3)Ensure that signal source level adjustments and EVM gain (R4) are set to minimum

4)Connect the audio source to the module IN+ and GND pins taking care to observe marked polarity

5)Connect the Shutdown pin to VDD through a normally open switch

6)	For BTL output, connect an 8-Ω– 32-Ωspeaker to the module OUT+ and
	OUT– pins, or
7)	For single-ended output, connect a headphone or an 8-Ω– 32-Ωspeaker
	to the module OUT+ and GND pins through a 33 ∝ F to 1000 ∝ F output-

-coupling capacitor (figure 3–9)

Power-up

8)Verify correct voltage and input polarity and set the external power supply to ON

The EVM should begin operation.

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

2-4 Quick Start