Texas Instruments 2004 manual Precautions

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 applied— damage to the EVM board, the platform, or both may result.

Figure 2−1. Quick Start Platform Map

6b 1 10 6b 6b

6b

Power

Input

VCC(J1) DC SOURCE J1 VCC In +		(J2)
	JP1
D4 J2 AC/DC In	D3
Right In	J3

JP2	JP3
AC/DC	Batt

D2 D1

F1 C1+

VR1

LED1 VCC R1

Off Pwr

On	ICC
S1	JP4
	B1		SUPPLY	POWER	U6	VDD In/Out F2
	IDD	JP5	R2
				LED2 VDD		J7
Audio						Right Out
Power

VR2

6a

DC

Power

In/Out

+

J6

8

Audio

Input

Signal Conditioning

InStereoJ4

U1

InLeftJ5

****CAUTION****

Do not insert or remove EVM boards with power applied

1997 INSTRUMENTS TEXAS Plug-N-Play Audio Amplifier

Evaluation Platform

SLOP097 Rev. C.1

	Amps							J8
								+
S2	Off	U3					Right Out
				U2				−
Conditioning	On							−
							Left Out
		U4			JP6	Mode		+
						Mute
				Polarity				J9
					Lo
					Hi
							Out
			-U2U4	+ JP7 HP(U5)		-Spk(U2U4)
								StereoLeft
	U5	U5				C3 JP8
TP1 GND		S3 HP Source		R3	+	C2	HP Out		J10
				R4
									R5

9

Speaker

Output

5

4

Headphone

Output

9

3 2

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