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TDA7546 Datasheet(PDF) 64 Page - STMicroelectronics

Part # TDA7546
Description  Multichip module for TMC tuner applications
PDF  68 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7546 Datasheet(HTML) 64 Page - STMicroelectronics

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TDA7546
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Table 50.
Block diagram quality detection principle (without overdeviation correction)
Signal
LOW
HIGH
ac
No adjacent channel
Adjacent channel present
ac+
No strong adjacent channel
Adjacent channel higher as ac
sm
Fieldstrength higher as softmute threshold
Fieldstrength lower as softmute threshold
dev
Deviation lower as threshold DWTH
Deviation higher as threshold DWTH
dev+
Deviation lower as threshold DTH*DWTH
Deviation higher as threshold DTH*DWTH
inton
ISS filter off by logic (wide)
ISS filter on by logic
int80
ISS filter 120KHz (mid)
ISS filter 80KHz (narrow)
Input Signals
Mode1
Mode2
ac
ac+
sm
dev
dev+
inton
int80
Function
inton
int80
Function
00
00
00
0
wide
0
0
wide
00
01
00
0
wide
0
0
wide
00
01
10
0
wide
0
0
wide
00
10
01
1
narrow
1
1
narrow
00
11
00
0
wide
1
0
mid
00
11
10
0
wide
0
0
wide
10
00
01
1
narrow
1
0
mid
11
00
01
1
narrow
1
1
narrow
10
01
01
0
mid
1
0
mid
11
01
11
0
mid
1
1
narrow
10
10
01
1
narrow
1
1
narrow
11
10
01
1
narrow
1
1
narrow
10
11
01
0
mid
1
0
mid
11
11
01
0
mid
1
1
narrow
10
11
11
0
mid
1
0
mid
11
11
11
0
mid
1
1
narrow



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