TDA7402 STMicroelectronics, TDA7402 Datasheet - Page 34

• Manufacturer Part Number: TDA7402
• Description: IC PROCESSOR CAR SIGNAL 44-LQFP
• Manufacturer: STMicroelectronics
• Type: Car Signal Processorr

Specifications of TDA7402

• Applications: Automotive Systems
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• Case: QFP
• Dc: 05+
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Stereo decoder part
4.3.4
4.4
4.4.1
Table 8.
34/69
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
Noise blanker part features
●
●
●
●
●
●
●
●
All parameters measured in FM mode if not otherwise specified.
Noise blanker 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
V
V
O
O
O
O
(
(
spurious
spurious
meas.with
V
meas.with
V
(
(
signal
signal
PEAK
PEAK
=0.9V
=1.5V
) at1kHz
) at1kHz
Test condition
(
(
) 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