Texas Instruments TPA 311 Using The TPA311 EVM Stand-Alone, 1 TPA311 EVM Connected for BTL Output

Using The TPA311 EVM Stand-Alone

3.4 Using The TPA311 EVM Stand-Alone

Using the TPA311 Audio Power Amplifier Evaluation Module stand-alone is much the same as using it with the platform. The same 2-V to 5.5-V power sup- ply range and the isolated OUT+ and OUT± lines for BTL operation require- ment exists.

Note that the mute signal applied to the EVM shutdown pins must be able to supply enough current to overcome the pulldown resistors on the modules (20 kΩ 20 kΩ for two EVMs).

3.4.1TPA311 EVM Connected for BTL Output

Figure 3±8. TPA311 EVM Connected for Stereo BTL Output

		5 VDC
	Shutdown	VDD GND
			±3
	S1	C5
		C3	009227
	R1		OUT±
	C2		GND
	R5	U1	OUT+
	C4
		R3	Literature #
	SE\BTL*
			SLOP116
Audio	R2
Input	IN+C1
(Right)	R4
	GND TPA311		EVM
	5 VDC		GND
	Shutdown	VDD GND
External Mute			±3
Control	S1	C5
(active high)		C3	009227
	R1		OUT±
	C2		GND
	R5	U1	OUT+
	C4
		R3	Literature #
	SE\BTL*
			SLOP116
Audio	R2
	IN+C1
Input
(Left)	R4
	GND TPA311		EVM

Right

Left

Note: The SE/BTL* (SE/BTL) EVM pin is pulled to GND through a 100-KΩresistor on the mod- ule.

3-12 Details