TDA7402 Datasheet, PDF (30/59 Pages) STMicroelectronics – CARRADIO SIGNAL PROCESSOR

TDA7402
Figure 22. Trigger Threshold vs. V_PEAK
VTH
2 60m V (0 0)
2 20m V (0 1)
1 80m V (1 0)
1 40m V (1 1)
M IN . TR IG . THR ES H OL D
8 S TE PS
6 5m V
3 0m V
0 .9 V
NO IS E C ON TR OL LE D T RIG . TH RE S HO LD
1.5 V
VPEAK _[V]
Figure 23. Fig. 23: Deviation Controlled Trigger Adjustment
VP _{E A K}
[V ]
OP
00
2 .8
01
2 .0
10
1 .2
0 .9
D etector off (11 )
20
32 .5
45
75
Figure 24. Fieldstrength Controlled Trigger Adjustment
VP _{E A K}
D E V IA T ION [KH z]
≈ 3V
MONO
S TERE O
NO ISE
noisy s ign al
2 .4V (00)
1.9V (01 )
1.4V (10 )
A TC _SB O FF (1 1)
g ood signa l
0 .9 V
E’
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