Texas Instruments TPA701 Msop Audio Power Amplifier Evaluation Module, ±2. TPA701 Msop EVM

The TPA701 MSOP Audio Power Amplifier Evaluation Module

3.2 The TPA701 MSOP Audio Power Amplifier Evaluation Module

The TPA701 MSOP Audio Power Amplifier Evaluation Module is powered by a TPA701 700-mW Low-Power Audio Amplifier IC and includes an on-board shutdown control signal switch.

The module can be used with the TI Plug-N-Play Audio Amplifier Evaluation Platform (Figure 3±1) or wired directly into circuits or equipment. The module has single in-line header connector pins mounted to the under side of the board. These pins allow the module to be plugged into the TI platform, which automatically makes all the signal input and output, power, and control connections to the module.

The module connection pins are on 0.1-inch centers to allow easy use with standard perf board and plug board-based prototyping systems. Or, the EVM can be wired directly into existing circuits and equipment when used stand-alone.

The module appears in Figure 3±2 and its schematic is shown in Figure 3±3.

Figure 3±2. TPA701 MSOP EVM

Vdd

Shutdown

S1				+
		R1		²
			U1		C4
	C1
	R2
	C2				R3
					C5

GND

C3

OUT±

GND

OUT+

	TEXAS
	INSTRUMENTS
IN	SLOP213
GND
	TPA701 MSOP EVM

²Due to the very small size of the MSOP IC package, the standard part number TPA701 is replaced with the code TIABA

Figure 3±3. TPA701 MSOP EVM Schematic Diagram
						VDD	GND
					2.5 V to 5.5 V C3
						10 μF
S1	No	1				+
					8
Shutdown			Shutdown V
		2		O ±	7
R1			Bypass	GND
20 kΩ	C1
		3			6		OUT±
	1 μF		In+	VDD
						C4	GND
		4			5
			In±	VO +		1 μF
C2							OUT+
1 μF						C5
			R3
Audio Input±						5 pF
			39 kΩ
	R2
GND
	20 kΩ

Details 3-3