U4065B Datasheet, PDF (14/34 Pages) TEMIC Semiconductors – FM Receiver

Figure 21. AGC Threshold Settings
Level
Interfering signals
Desired
signal
Intermod
signal
Intermod signal
Stereo-level
Noise floor
Desired
frequency
Frequency
Figure 22. A Low AGC Threshold Causes the Blocking Signal to Suppress the Desired
Signal
Level
Strong signal
Desired
signal
Stereo-level
Noise floor
Desired
frequency
Frequency
Figure 23. The Correct AGC Threshold Enables Optimum Reception
Level
Strong signal
Desired
signal
Desired
frequency
Stereo-level
Noise floor
Frequency
14 U4065B
4807A–AUDR–05/04