TDA7402_07 STMICROELECTRONICS [STMicroelectronics], TDA7402_07 Datasheet - Page 36

• Manufacturer Part Number: TDA7402_07
• Description: Car radio signal processor
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Stereo decoder part
5.3.4
5.4
5.4.1
Table 8.
36/71
Symbol
V
TRNOISE
V
TR
Trigger threshold
Noise controlled
Trigger threshold
ACI (adjacent channel interference)
measured with: 90% mono signal; 9% pilot signal; fm=1kHz; 1% spurious signal
( f
Noise blanker part
Features:
●
●
●
●
●
●
●
●
All parameters measured in FM mode if not otherwise specified.
Electrical characteristics
S
= 110kHz or 186kHz, unmodulated).
AM and FM mode
internal 2nd order 140kHz high-pass filter for MPX path
internal rectifier and filters for AM-IF path
programmable trigger thresholds
trigger threshold dependent on high frequency noise with programmable gain
additional circuits for deviation and fieldstrength dependent trigger adjustment
4 selectable pulse suppression times for each mode
programmable noise rectifier charge/discharge current
Parameter
(1)
α114
α190
=
=
--------------------------------------------------------------- - f
V
--------------------------------------------------------------- - f
V
meas.with
V
meas.with
V
V
O
V
O
PEAK
PEAK
O
O
(
(
spurious
spurious
(
(
signal
signal
=0.9V
=1.5V
Test condition
) at1kHz
) at1kHz
(
(
) at4kHz
) at4kHz
(
(
)
)
)
)
;
;
s
s
=
=
110kHz
186kHz
111
110
101
100
011
010
001
000
00
01
10
11
–
–
(
(
Min.
3 38kHz
5 38kHz
⋅
⋅
Typ.
)
)
260
220
180
140
30
35
40
45
50
55
60
65
Max.
TDA7402
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
Unit
OP
OP
OP
OP
OP
OP
OP
OP
OP
OP
OP
OP