Texas Instruments manual Description, TPA0103 EVM Specifications

Description

1.2 Description

The TPA0103 Audio Power Amplifier Evaluation Module is a complete, low-power three-channel audio power amplifier. It consists of the TI TPA0103 3-Channel Audio Power Amplifier IC along with a small number of other parts mounted on a circuit board that measures approximately 2º inches by 1￿ inches (Figure 1±1).

Figure 1±1. The TI TPA0103 Audio Amplifier Evaluation Module

C7 R10 RHP

GNDR8 C6

RIN

GND

R15

		C8
	R18
R16
GND		C3
LIN	C1	R1
GND
LHP	C2	R3

	VDD		GND	R11 ROUT+
	+				GND
R7	C11			S5
R14			S3		COUT±
					HP/L*
R9			S4
		C9 C10			MODE A
R17				R12
					MODE B
U1
			TPA0103		EVM
R4
				REV. A
	C12		Lit.# SLOP103
R13		C5	S2		SDWN
R2	±3	S1	R6		COUT+
					GND
		R5
					LOUT+
	009228

Single in-line header pins are mounted to the underside of the module circuit board to allow the EVM to be plugged into the TI Plug-N-Play Audio Amplifier Evaluation Platform, or to be wired directly into existing circuits and equipment when used stand-alone.

The platform has room for a single TPA0103 evaluation module and is a convenient vehicle for demonstrating TI's audio power amplifier and related evaluation modules. The EVMs simply plug into the platform, which auto- matically provides power to the modules, interconnects them correctly, and connects them to a versatile array of standard audio input and output jacks and connectors. Easy-to-use configuration controls allow the platform and EVMs to quickly model many possible end-equipment configurations.

There is nothing to build, nothing to solder, and nothing but the speakers included with the platform to ªhook up.º

1.3 TPA0103 EVM Specifications

Supply voltage range, VDD	3 V to 5.5 V
Supply current, IDD	. 1.5 A, max

Continuous output power, PO: center channel, THD = 0.2%, 4-ΩBTL, VDD =5 V: . . . . 1.75 W

	L/R channels, THD = 0.2%, 4-ΩSE, VDD =5 V:	. . . . .	. 535 mW
	L/R channels, THD = 0.2%, 32-ΩSE, VDD =5 V:	. . . . 100 mW
Audio input voltage, VI:	L/R IN, gain = 2 ± 22 BTL	0.75	VPP , max
	L/R IN HP, gain = 1	. . . 4	VPP , max
Minimum load impedance, RL	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . .	. . . . . 4 Ω

1-4 Introduction