Precautions
3.1 Precautions
Power Supply Input Polarity and Maximum Voltage
Always ensure that the polarity and voltage of the external power connected to VCC power input connector J1, J2, and/or VDD power input connector J6 are correct. Overvoltage or
Inserting or Removing EVM Boards
Do not insert or remove EVM boards with power applied Ð damage to the EVM board, the platform, or both may result.
Figure 3±1. The TI Plug-N-Play Audio Amplifier Evaluation Platform
Power Input
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| JP1 |
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| F1 | C1+ | ||||||||||||
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| VR1 |
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J1 VCC In + | VCC(J1) DC SOURCE | JP2 AC/DC (J2) | JP3 Batt |
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| OffPwr | |||||||||||||||||||||
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D4 J2 AC/DC In |
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| D3 |
| D2 | D1 |
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| J3 Right In |
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| R1 |
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| LED1 VCC |
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On | ICC | ||
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S1 | JP4 | ||
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B1 |
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IDD | JP5 |
Audio |
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Power |
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SUPPLY | POWER |
| VR2 |
U6 | F2 | ||
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| DC |
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| Power |
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| In/Out |
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R2 |
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| J6 VDD In/Out |
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| LED2 VDD |
| J7 |
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| Right Out |
Audio Input
Signal Conditioning |
J4 Stereo In |
U1 |
J5 Left In |
****CAUTION**** |
Do not insert or remove |
EVM boards with power |
applied |
TEXAS INSTRUMENTS 1997 |
Evaluation Platform
SLOP097 Rev. C.1
| Amps |
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S2 | Off | U3 |
Conditioning | On | U4 |
U5
TP1
GND
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| J8 |
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| + |
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| Right Out |
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| U2 |
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| ± |
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| ± |
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| Left Out |
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| JP6 | Mode | + |
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| Mute |
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U5 | HP(U5) | JP7 |
| StereoLeft | ||||
| JP8 |
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| Polarity |
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| J9 |
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| Lo |
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| Hi |
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| Out |
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S3 HP Source | + |
| C3 |
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| J10 | ||
R3 | + |
| C2 | HP Out | ||||
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R4 R5
Speaker
Output
Headphone Output
Details |