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TDA7540N датащи(PDF) 48 Page - STMicroelectronics

номер детали TDA7540N
подробное описание детали  AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)
PDF  76 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7540N датащи(HTML) 48 Page - STMicroelectronics

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Software specification
TDA7540N
48/76
010
Not valid
011
Δf = 6.25kHz (FM)1kHz (AM) not recommended
100
Δf = 12.5kHz (FM) 2kHz (AM) not recommended
101
Δf = 25kHz (FM) 4kHz (AM)
110
Δf = 50kHz (FM) 8kHz (AM)
111
Δf = 100kHz (FM)16kHz (AM)
Table 18.
Addr 6 IF counter control 2 (continued)
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
Table 19.
Addr 7 AM control
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
Normal AGC time constant
1
Short time constant for AM seek stop
0
Multipath information available FM at PIN 24
1
AM stereo output available at PIN 24
0
0
Prescaler ratio 10
0
1
Prescaler ratio 8
1
0
Prescaler ratio 6
1
1
Prescaler ratio 4
0
0
Disable additional TV1, 2 offset
0
1
Enable additional TV1 offset +3.175V (for weather band)
1
0
Enable additional TV2 offset +3.175V (for weather band)
1
1
Enable additional TV1, 2 offset +3.175V (for weather band)
0
TV is tracking with PLL
1
TV is independing on PLL
0
Disable local mode
1
Enable local mode (PIN diode current = 0.5mA)
Table 20.
Addr 8 quality ISS filter
MSB
LSB
Function
d7
d6
d5
d4
d3
d2
d1
d0
0
ISS filter control “ON” recommended
1
ISS filter control “OFF”
0
Switch ISS filter “OFF”
1
Switch ISS filter “ON”



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