Texas Instruments SLOU025 manual Using The TPA122 MSOP EVM Stand-Alone, Details

Using The TPA122 MSOP EVM Stand-Alone

3.4 Using The TPA122 MSOP EVM Stand-Alone

Using the TPA122 MSOP Audio Power Amplifier Evaluation Module stand-alone is much the same as using it with the platform. The same 2.5-V to 5.5-V power supply requirement exists.

Note that the shutdown signal applied to the EVM SD pin must be able to supply enough current to overcome the pulldown resistor on the module (20 kΩ).

3.4.1TPA122 MSOP EVM Connected as a Stereo Headphone Amplifier

Figure 3±8. TPA122 MSOP EVM Connected as a Stereo Headphone Amplifier

5 VDC

Shutdown	NO	Shutdown		VDD	GND
Audio			S1	+
				C5
Input			R1
		IN1		R2
(Right)		GND	C1	R3
				U1²	Vo1
			C2		GND
		TEXAS
		INSTRUMENTS			C4
			C3	R5
Audio				R4	GND
Input		IN2	SLOP127		Vo2
(Left)		GND
			TPA122 MSOP EVM

+33 μF ±

1000 μF

33 μF ±

+1000 μF

² Due to the very small size of the MSOP IC package, the standard part number TPA122 is replaced with the code TIAAE

Details 3-11