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4 stand-alone connection diagram, Operation – Texas Instruments TPA751 MSOP User Manual

Page 15

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Stand-Alone Connection Diagram

2-5

Operation

2.4

Stand-Alone Connection Diagram

The power supply range is 2.5 V to 5.5 V and isolated OUT+ and OUT– lines
for BTL operation are required.

Note that the source of any shutdown signal applied to the EVM SHUTDOWN
pin must be able to sink the current flowing through the pullup resistor on the
module (20 k

) when the pin is held low.

Figure 2–3 shows a TPA751 EVM connected for stereo BTL operation.

Figure 2–3. TPA751 EVMs Connected for Stereo BTL Output

Audio Input

(Left)

External Mute

Control

(active low)

5 VDC

Audio Input

(Right)

5 VDC

GND

OUT+

IN–

IN+

VDD

GND

U1

Shutdown

R5

OUT–

GND

C4

TEXAS

INSTRUMENTS

SLOP357

TPA751 MSOP EVM

C5

S1

R1

+

R2

C2

C1

R3
R4

C3

OUT+

IN–

IN+

VDD

GND

U1

Shutdown

R5

OUT–

GND

C4

TEXAS

INSTRUMENTS

SLOP357

TPA751 MSOP EVM

C5

S1

R1

+

R2

C2

C1

R3
R4

C3

Right

Left

Due to the very small size of the MSOP IC package, the standard part number TPA751 is replaced with the code TIATC.