U4468B Datasheet, PDF (8/11 Pages) ATMEL Corporation – Quasi-split Sound Circuit and AM Demodulator IC

Internal Pin Configuration
Figure 4. Sound IF Inputs (Pins 1 and 2)
2 kΩ
2
10 kΩ
2 kΩ
10 kΩ
2.3 V
1
Figure 5. AGC Time Constant (Pin 3)
3
Figure 6. Internal Reference Voltage (Pin 4)
4
4.25 V
3.5 V
Figure 7. Loop Filter (Pin 5)
5
2.75 V
8 U4468B
4777A–TVVCR–01/04