Texas Instruments Using The TPA0242 EVM Stand-Alone, 1 TPA0242 EVM Connected for BTL Output

Using The TPA0242 EVM Stand-Alone

3.4 Using The TPA0242 EVM Stand-Alone

Using the TPA0242 audio power amplifier evaluation module stand-alone is much the same as using it with the platform. The same 4.5-V to 5.5-V power supply range and the isolated OUT+ and OUT± lines for BTL operation requirement exists.

Note that the shutdown signal applied to the EVM SHUTDOWN pin must be able to supply enough current to overcome the pullup resistor on the module (100 kΩ).

3.4.1TPA0242 EVM Connected for BTL Output

Figure 3±9. TPA0242 EVM Connected for Stereo BTL Output

Audio

Input

(Right)

R HP	VDD				GND
		+
GND					C10
R LINE±	C4 C3	C5	C6	R3	S2 R4	S3	S4
R IN+
SHUTDOWN
S1

R1	C11
C1
C2	U1
	C12

ROUT+

GND

ROUT±

HP/LINE

SE/BTL

PCBEEP

TEXAS INSTRUMENTS

Right

External Shut

Down Control

(active low)

Audio

Input (Left)

L IN+	R2				SHUTDOWN
L LINE±		C7	C8	C9
GND						LOUT±
L HP			+	C13	SLOP275	GND
TPA00242 EVM Board		VDD		GND		LOUT+

5 V

Left

Table 3±2. Typical TPA0242 EVM Jumper Settings for BTL Stand-Alone

EVM	S3
TPA0242	OFF

Note: ON = Shunt installed

OFF = Open

3-16 Details