Pin Details of IC SN76622
Substitute : TBA 120 U, A223D, U233
Functions :
- Sound IF amplifier
- FM Detector
- AF detector
Pin No. | Functions | Voltage |
1. | Ground(-Ve supply voltage) | 0 |
2. | Sound IF input(5.5MHz.) | 1.9 |
3. | Audio voltage input | 2.9 |
4. | Volume feedback | 4.8 |
5. | Volume control(electro attenuator) | 3.8 |
6. | Not connected | NC |
7. | FM detector | 3.3 |
8. | Audio output | 4 |
9. | FM detector | 3.3 |
10. | Not connected | NC |
11. | Positive (+Ve supply voltage) | 11 |
12. | Fixed AF output | 5 |
13. | Sound IF feedback | 1.9 |
14. | Sound IF input(5.5MHz.) | 1.9 |
