TDA7412 Datasheet, PDF (26/56 Pages) STMicroelectronics – CARRADIO SIGNAL PROCESSOR

TDA7412
s 4 selectable pulse suppression times for each mode
s programmable noise rectifier charge/discharge current
2.4.2 ELECTRICAL CHARACTERISTICS
All parameters measured in FM mode if not otherwise specified.
Symbol
Parameter
Test Condition
V_{TR Trigger Threshold} ¹⁾
meas.with
111
V_PEAK=0.9V
110
101
100
011
010
001
000
V_TRNOISE noise controlled
Trigger Threshold
meas.with
00
V_PEAK=1.5V
01
10
11
V_RECT Rectifier Voltage
V_MPX=0mV
V_MPX=50mV, f=150kHz
V_MPX=200mV, f=150kHz
V_RECTDEV Deviation dependent
meas.with
11
Rectifier Voltage
V_MPX=500mV
10
(75kHz dev.)
01
00
V_RECTFS Fieldstrength
controlled Rectifier
Voltage
meas.with
11
V_MPX=0mV,
10
V_LEVEL<< V_SBL
01
(fully mono)
00
T_SFM Suppression Pulse Duration FM Signal HOLDN in
00
Testmode
01
10
11
T_SAM Suppression Pulse Duration AM Signal HOLDN in
00
Testmode
01
10
11
V_RECTADJ Noise rectifier discharge (2)
Signal PEAK in
00
adjustment
Testmode
01
10
11
SR_PEAK Noise rectifier (2)
charge
Signal PEAK in
0
Testmode
1
Min.
0.5
1.5
2
0.5
0.9
1.7
2.5
0.5
0.9
1.7
2.1
Typ.
30
35
40
45
50
55
60
65
260
220
180
140
0.9
1.7
2.5
0.9(off)
1.2
2.0
2.8
0.9(off)
1.4
1.9
2.4
38
25.5
32
22
1.2
800
1.0
640
0.3
0.8
1.3
2.0
10
20
Max.
1.3
2.1
2.9
1.3
1.5
2.3
3.1
1.3
1.5
2.3
3.1
Unit
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
mV_OP
V
V
V
V_OP
V_OP
V_OP
V_OP
V
V
V
V
µs
µs
µs
µs
ms
µs
µs
µs
V/ms
mV/µs
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