TDA7402 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7402' PDF : 69 Pages View PDF
I2C bus interface
TDA7402
Table 31. Noiseblanker II (24)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
Function
PEAK charge current
0 low
1 high
Fieldstrength adjust
00
2.3V
01
1.8V
10
11
t(s) 0 0
uc 0 1
d 1 0
ro 1 1
te P 0 0
le 0 1
o 1 0
s 1 1
- Ob 0
t(s) 1
1.3V
OFF
Blank Time FM / AM
38µs / 1.2ms
25.5µs / 800µs
32µs / 1.0s
22µs / 640µs
Noise rectifier discharge resistor
R = infinite
RDC = 56k
RDC = 33k
RDC = 18k
Strong multipath influence on PEAK 18k
off
on (18k discharge if VMPout< 2.5V)
c Table 32. AM / FM noiseblanker (25)
du MSB
LSB
ro D7 D6 D5 D4 D3 D2 D1 D0
Function
P Stereo decoder mode
te 0 FM
le 1 AM
Obso 0 0 0
AM rectifier gain
6dB
001
8dB
010
10dB
011
12dB
100
14dB
101
16dB
110
18dB
111
20dB
60/69
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