Pin Details of IC TDA1905
4W Audio Amplifier
4W Audio Amplifier
Functions : Audio pre-amplifier and Audio output
| Pin No. | Functions | Voltage |
| 1. | Audio frequency output | 6.5 |
| 2. | Positive (+Ve supply voltage) | 12.8 |
| 3. | Bootstrap | 12.6 |
| 4. | Threshold | - |
| 5. | Muting | - |
| 6. | (Feedback)Inveret input | 2.6 |
| 7. | SVR | 2.5 |
| 8. | Non Invert input(audio frequency input)5.5MHz. | 2.6 |
| 9. | Ground (-Ve supply voltage ) | 0 |
| 10. | Ground (-Ve supply voltage ) | 0 |
| 11. | Ground (-Ve supply voltage ) | 0 |
| 12. | Ground (-Ve supply voltage ) | 0 |
| 13. | Ground (-Ve supply voltage ) | 0 |
| 14. | Ground (-Ve supply voltage ) | 0 |
| 15. | Ground (-Ve supply voltage ) | 0 |
| 16. | Ground (-Ve supply voltage ) | 0 |