Texas Instruments TPA102 MSOP manual Quick Start List for Stand-Alone, Quick Start Module Map

Quick Start List for Stand-Alone

2.3 Quick Start List for Stand-Alone

Follow these steps to use the TPA102 MSOP EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA102 MSOP 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			VDD	GND
			S1		C4
5		C3		R2
	IN1				C7
4		R1
	GND
					R3 Vo1
		C1
					GND
		U1†			C5
		C2		R4
				R5
				TEXAS
		INSTRUMENTS			GND
4	IN2		SLOP125		Vo2
	GND	TPA102 MSOP EVM

6

6

†Due to the very small size of the MSOP IC package, the standard part number TPA102 is

-replaced with the code TIAAC

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 VDD

-and GND pins taking care to observe marked polarity.

Inputs and outputs

3)Ensure that the signal source level is set to minimum.

4)Connect the audio source to the module IN1, IN2, and GND pins taking care to observe marked polarity.

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

6)Connect 32-Ωheadphones to the module VO1, VO2 pins through 33 ∝ F to 1000 ∝ F output-coupling capacitors (figure 3 –8) and return to the GND pin, or

7)For line output, connections to the VO1 and VO2 pins must be made through 33 ∝ F to 1000 ∝ F output-coupling capacitors and returned to

-GND.

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 as needed.

2-4 Quick Start