Texas Instruments manual ±2. Module Preparation, ±4. Typical TPA0242 EVM Jumper Settings

Quick Start List for Platform

-Evaluation module preparations

Figure 2±2. Module Preparation

14

R HP

GND

R LINE±

SHUTDOWN

R IN+

S1

R1

C1

C2

L IN+ R2

	VDD						GND
			+			C10
							R4
C3		C4	C5	C6	R3				S2	S3	S4
							C11
							U1
								C12

ROUT+

GND

ROUT±

HP/LINE

SE/BTL

PCBEEP

TEXAS INSTRUMENTS

SHUTDOWN

13

12

11

L LINE±

GND

L HP

TPA00242 EVM Board

C7	C8	C9		LOUT±
	+	C13	SLOP275	GND
VDD		GND		LOUT+

Table 2±4. Typical TPA0242 EVM Jumper Settings

EVM	S3
TPA0242	OFF

Note: ON = Shunt installed, OFF = Open

11)To allow the module SE/BTL control input to switch the amplifier IC between single ended (SE) and bridge-tied load (BTL) output modes, set output mode jumper S3 to OFF. To keep the module amplifier IC in the single-ended output mode regardless of the control input state, set jumper S3 to ON.

12)To allow the module HP/LINE control input to switch the amplifier IC between using the HP pins and the LINE pins as the signal inputs, set the input mode jumper S3 to OFF. To keep the amplifier IC in the HP input mode regardless of the control input state, set jumper S3 to ON.

-Power Up

13)To allow the amplifier IC to switch from the LINE inputs to the HP inputs when the output switches from BTL output mode to SE output mode and vice versa, set jumper S4 to ON. To allow the inputs and output modes to switch independently, set jumper S4 to OFF.

Platform LED2 should light indicating the presence of VDD, and the evaluation modules installed on the platform should begin operation.

14) Adjust the signal source level as needed.

2-4 Quick Start