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TDA7406 Datasheet(PDF) 31 Page - STMicroelectronics

Part # TDA7406
Description  Car radio signal processor
PDF  64 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TDA7406 Datasheet(HTML) 31 Page - STMicroelectronics

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TDA7406
Noise blanker part
31/64
6
Noise blanker part
6.1
Features:
●
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
6.2
Noise blanker electrical characteristics
Table 6.
Noise blanker electrical characteristics
All parameters measured in FM mode if not otherwise specified.
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
V
TR
Trigger Threshold(1)
meas.with
VPEAK=0.9V
111
30
mV
OP
110
35
mV
OP
101
40
mV
OP
100
45
mV
OP
011
50
mV
OP
010
55
mV
OP
001
60
mV
OP
000
65
mV
OP
V
TRNOISE
noise controlled
Trigger Threshold
meas.with
VPEAK=1.5V
00
260
mV
OP
01
220
mV
OP
10
180
mV
OP
11
140
mV
OP
V
RECT
Rectifier Voltage
VMPX=0mV
0.5
0.9
1.3
V
VMPX=50mV, f=150kHz
1.5
1.7
2.1
V
VMPX=200mV, f=150kHz
2
2.5
2.9
V
V
RECT
DEV
Deviation dependent
Rectifier Voltage
meas.with
VMPX=500mV
(75kHz dev.)
11
10
01
00
0.5
0.9
1.7
2.5
0.9 (off)
1.2
2.0
2.8
1.3
1.5
2.3
3.1
VOP
VOP
VOP
VOP



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