2.4 Stand-Alone Connection Diagrams
The power supply range is 2.5 V to 5.5 V and isolated RO/MO+ and LO/MO± 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 (100 kΩ) when the pin is held low.
2.4.1TPA0253 EVMs Connected for Stereo BTL Output
Figure 2±3 shows two TPA0253 EVMs connected for stereo BTL operation.
Figure 2±3. TPA0253 EVMs Connected for Stereo BTL Output
5 VDC
Audio
Input
(Right)
GND
RIN
C6
VDD | GND |
TEXAS INSTRUMENTS 2000
R3 C8
RO/MO+ 
GND
LO/MO+ 
STEREO/MONO
C7
Right
R4
C1
+
U1
+
R8
R2
R5 S1
R7
Audio
Input (Left)
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| R1 | C4 |
| R9 |
LIN | C2 | C5 |
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GND |
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| SHUTDOWN C3 |
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TPA0253 EVM Board | VDD | GND |
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| 5 VDC |
| GND |
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| VDD |
| GND |
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| TEXAS |
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GND |
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| INSTRUMENTS |
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| 2000 |
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RIN |
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| C6 |
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| R3 | C8 |
R4 |
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| U1 | + |
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| C1 |
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R2 |
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| R5 |
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| S1 |
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| R1 | C4 |
| R9 |
LIN | C2 | C5 |
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GND |
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| SHUTDOWN C3 |
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TPA0253 EVM Board | VDD | GND |
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R6 SHUTDOWN 
J1 GND
SLOP270
RO/MO+ 
GND
LO/MO+ 
STEREO/MONO
C7
+
R8
R7
R6 SHUTDOWN 
J1 GND
SLOP270
Left
