Texas Instruments TPA0253 manual Precautions, ±1. Quick Start Platform Map

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

5b 1 9 5b 5b

5b

Power

Input

J1 VCC In +		VCC(J1) DC SOURCE		(J2)	JP2 AC/DC	JP3 Batt
				JP1				F1	C1+
							VR1
D4 J2 AC/DC In
			D3		D2	D1
	J3 Right In
										R1
								LED1 VCC

Signal Conditioning

Off Pwr

On	ICC
S1	JP4

B1

Audio

Power

Amps

IDD

JP5

R2

SUPPLY	POWER		VR2
		U6	F2
			+
			J6 VDD In/Out
	LED2 VDD		J7
			Right Out
			J8

5a

DC

Power

In/Out

7

Audio Input

J4 J5

Stereo Left

InIn

TEXAS INSTRUMENTS 1997

S2	Off
U1
Conditioning	On

****CAUTION****

Do not insert or remove EVM boards with power applied

Plug-N-Play Audio Amplifier
Evaluation Platform	TP1 GND
SLOP097 Rev. C.1
3	2

U3

	U4
U5	U5
	Source

					+
	U2			Right Out
					±
					±
				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
					4

8

Speaker

Output

Headphone

Output

2-2