Pin Details of IC TBA120U
Substitute : A223D ,SN76622 ,U223
Functions :
1.Sound IF Amplifier.
2.FM Detector.
3.A.F.Ampliefier
Pin No. | Function | Voltage |
1. | ground( -Ve supply voltage ) | 0 |
2. | Sound IF input (5.5 MHz) | 1.9 |
3. | Audio voltage input | 2.9 |
4. | Volume Feedback | 4.8 |
5. | volume control (Electronic 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 I.F. Feedback | 1.9 |
14. | Sound I.F. Input(5.5 Mhz.) | 1.9 |
