Texas Instruments TPA 311 manual Precautions, Audio Input

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 on-board 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 Ð damage to the EVM board, the platform, or both may result.

Figure 2±1. Quick Start Platform Map

7b 1 11 7b 7b

Power Input

7b

Audio Input

9

In +	VCC(J1) DC SOURCE J1 VCC
AC/DC In	D4 J2	D3
	Right In	J3
	Stereo In	J4
	Left In	J5

TEXAS INSTRUMENTS 1997

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

On	ICC
S1	JP4

	B1
	IDD	JP5
	Audio
	Power
	Amps
S2	Off	U3
Conditioning	On	U4

U5

TP1

GND

	SUPPLY		POWER				VR2
				U6		F2
							VDD In/Out
R2		LED2 VDD			J7
					Right Out
						J8
						+
					Right Out
	U2					±
						+
					Left Out
			JP6	Mode		±
				Mute
U5	HP(U5) U2-U4	Polarity
		JP7		Spk(U2-U4) JP8		J9
			Lo
			Hi		Left Out
						Stereo
S3 HP Source			+	C3			J10
			+	C2	HP Out
	R3

R4 R5

DC

Power 7a

In/Out

+

J6

Speaker

Output 10

5

Headphone

Output

3 2

64

2-2 Quick Start