Texas Instruments TPA0242 manual ±1. The TI Plug-N-Play Audio Amplifier Evaluation Platform

Precautions

3.1 Precautions

Power Supply Input Polarity and Maximum Voltage

Always ensure that the polarity and voltage of the external power connected to VCC power input connector J1, J2, and/or VDD power input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in fuses and cause other damage to the platform, installed evaluation modules, and/or the power source.

Inserting or Removing EVM Boards

Do not insert or remove EVM boards with power appliedÐdamage to the EVM board, the platform, or both may result.

Figure 3±1. The TI Plug-N-Play Audio Amplifier Evaluation Platform

Power Input

J1 VCC In +	VCC(J1) DC SOURCE
D4 J2 AC/DC In	D3
J3 Right In

JP1		JP2		JP3		F1	C1+		Off
(J2)	AC/DC		Batt		VR1
									Pwr
	D2		D1
						LED1 VCC		R1

On	ICC
S1	JP4

B1
IDD	JP5
Audio
Power

SUPPLY	POWER		VR2
		U6	F2
			DC
			Power
			In/Out
			+
R2			J6 VDD In/Out
	LED2 VDD		J7
			Right Out

Audio Input

J4 Stereo In

J5 Left In

TEXAS INSTRUMENTS 1997

Signal Conditioning

U1

****CAUTION****

Do not insert or remove EVM boards with power applied

Plug-N-Play Audio Amplifier Evaluation Platform

SLOP097 Rev. C.1

	Amps
S2	Off	U3
Conditioning	On	U4
		U5
TP1 GND

					J8 +
	U2			Right Out
					±
					±
				Left Out
	JP6	Mode			+
		Mute
U2-U4 U5	JP7 HP(U5)
		JP8	Spk(U2-U4)
	Polarity				J9
	Lo
	Hi			Left Out
					Stereo
S3 HP Source	+		C3			J10
	R3		C2	HP Out
	+
	R4					R5

Speaker

Output

Headphone Output

3-2 Details