Texas Instruments TPA0242 manual Precautions, ±1. Quick Start Platform Map

Precautions

2.1 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 2±1. Quick Start Platform Map

7b

Power Input

9

Audio Input

		7b			1
		JP1		F1	C1+
	VCC(J1) DC SOURCE				Off Pwr
J1 VCC In +		JP2 AC/DC (J2)	JP3 Batt	VR1
D4 J2 AC/DC In	D3	D2	D1
J3 Right In				LED1 VCC	R1
		Signal Conditioning
J4 Stereo In					U1

13

On	ICC
S1	JP4

B1

Audio

Power

Amps

Off

S2

7 b

IDD JP5

		7
		b
SUPPLY	POWER		VR2
		U6	F2
			+
R2			J6 VDD In/Out
	LED2 VDD		J7
			Right Out
			J8 +
U3			Right Out
U2			±

7a

DC

Power

In/Out

10

Speaker Output

J5 Left In
	****CAUTION****
	Do not insert or remove
	EVM boards with power
	applied
TEXAS INSTRUMENTS 1997
	Plug-N-Play Audio Amplifier
	Evaluation Platform
	SLOP097 Rev. C.1

On

Conditioning

TP1

GND

	U4
U5	U5
	Source

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

5

Headphone Output

3 2

64

2-2 Quick Start