TDA7514 STMicroelectronics, TDA7514 Datasheet - Page 19

• Manufacturer Part Number: TDA7514
• Description: SINGLE-CHIP FM/AM TUNER
• Manufacturer: STMicroelectronics

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3.5 Noise Blanker
Table 7.
VRECTDEV
V
V
V
Symbol
SR
RECTADJ
TRNOISE
V
RECT
TS
V
RECT
PEAK
TR
FM
FS
BLTHL=PEAK+VBE+V
Trigger Threshold 1)
meas.with VPEAK=0.9V,
InGain=5.75dB
BLTHH=PEAK+VBE+m*(PEAK-1.5V)+m*0.56V
noise controlled Trigger
Threshold meas.with
VPEAK=1.5V,
InGain=5.75dB
Rectifier Voltage with
InGain=5.75dB
Deviation dependent
Rectifier Voltage
with VMPX=500mVrms &
InGain=5.75dB
Fieldstrength controlled
Rectifier Voltage
meas.with VMPX=0mV,
VLEVEL<< VSBL (fully
mono)
Suppression Pulse
Duration FM Signal
HOLDN in Testmode
Noise rectifier discharge
(2) adjustment Signal
PEAK in Testmode
Noise rectifier (2) charge
Signal PEAK in Testmode
Parameter
PROG
111
110
101
100
011
010
001
000
00
01
10
11
VMPX=0mV
VMPX=50mV, f=150kHz
VMPX=200mV, f=150kHz
11
10
01
00
11
10
01
00
00
01
10
11
00
01
10
11
0
1
Test Condition
Min.
0.5
1.5
2
0.9(off)
0.9(off)
Typ.
25.5
260
220
180
140
0.9
1.7
2.5
1.1
1.8
2.6
1.1
1.5
2.8
inf.
30
35
40
45
50
55
60
65
38
32
22
56
33
18
10
20
Max.
1.3
2.1
2.9
TDA7514
mV/µs
mV/µs
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
Unit
V
V
V
V
MΩ
MΩ
MΩ
µs
µs
µs
µs
W
V
V
V
V
V
V
V
OP
OP
OP
OP
19/74
OP
OP
OP
OP
OP
OP
OP
OP
OP
OP
OP
OP