Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux
Typical Application Circuits
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| 4.5V TO 5.5V |
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| 0.1∝F |
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| 100∝F |
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| 3, 4 | 11, 25 |
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| 17 | VDD | PVDD |
| 0.047∝F |
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| BIAS |
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| 27.4kΩ |
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| 1∝F |
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| 33.2kΩ |
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| 8 |
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| GAINLB |
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| 220∝F |
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| 7 |
| 15kΩ | 10kΩ |
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| GAINLA |
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| 15kΩ | 5 |
| OUTL+ | 10 |
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| INL1 |
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| 0.68∝F |
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| 0.68∝F |
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| OUTL- | 12 |
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| 15kΩ |
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| 6 |
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HPF |
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CODEC | 0.68∝F |
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| 15kΩ | 19 |
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| INR1 |
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| 0.68∝F |
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| OUTR- | 26 |
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| 15kΩ |
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| 20 |
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HPF |
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| INR2 |
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| 4.5V TO 5.5V |
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| OUTR+ | 24 |
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| 220∝F |
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| 21 |
| 15kΩ | 4.5V TO 5.5V |
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| GAINRA |
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1kΩ | 1kΩ | 10kΩ |
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| 22 |
| 33.2kΩ |
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| GAINRB |
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| 10kΩ |
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| 680kΩ |
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| 27.4kΩ |
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| SCL |
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| 1 | SDA |
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| 0.047∝F | 47kΩ |
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| 15 |
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MICROCONTROLLER |
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| ADD | HPS |
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| 2 | INT |
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| 14 | SHDN |
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| GND | PGND |
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| 18 | 9, 13, 23, 27 |
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______________________________________________________________________________________ | 21 | ||||||||||
MAX9777/MAX9778
