 English |
|
|
|
|
|
|
|
| U4065B Datasheet, PDF (7/34 Pages) TEMIC Semiconductors – FM Receiver | |||
| |||
| ◁ |
IF1OUT
Figure 8. Output of the First IF Amplifier
VS
330
ESD
7
U4065B
IMIFIN
The parallel output resistance is 330 ⦠which allows the use of standard ceramic BPF.
The parallel output capacitance is about 7 pF. The DC voltage at the pin is 0.5 V less
than VS.
Figure 9. Input of the IF Amplifier for the IM Sensor
9
ESD
The parallel input resistance is 330 â¦. The amplifier is extremely sensitive to AC signals.
An IF signal with a few hundred µV at this pin will cause current at the AGC output.
Therefore, attention needs to be paid when connecting the standard ceramic filter
between IMOUT and this pin. The reference point of the filter has to be free of any AC
signal, no DC current shall appear at this pin.
7
4807AâAUDRâ05/04
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese