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TDA7513T датащи(PDF) 15 Page - STMicroelectronics

номер детали TDA7513T
подробное описание детали  SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR
PDF  59 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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TDA7513T датащи(HTML) 15 Page - STMicroelectronics

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TDA7513T
4.4 NOISE BLANKER
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VHCLmin
Min. Voltage for FULL Highcut
12
17
22
%VHCH
VHCLmax
Max. Voltage for FULL Highcut
28
33
38
%VHCH
VHCLstep
Step Resolution
2.2
4.2
6.2
%VHCH
Carrier and harmonic suppression at the output
α19
Pilot Signal f = 19KHz
40
50
dB
α38
Subcarrier f = 38KHz
75
dB
α57
Subcarrier f = 57KHz
62
dB
α76
Subcarrier f = 76KHz
90
dB
Table 26. Noise Blanker
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VTR
Trigger Threshold 0) 1)
meas. with VPEAK = 0.9V
NBT = 111
( c )
30
( c )
mV
NBT = 110
( c )
35
( c )
mV
NBT = 101
( c )
40
( c )
mV
NBT = 100
( c )
45
( c )
mV
NBT = 011
( c )
50
( c )
mV
NBT = 010
( c )
55
( c )
mV
NBT = 001
( c )
60
( c )
mV
NBT = 000
( c )
65
( c )
mV
VTRNOISE Noise Controlled
Trigger
threshold 2)
meas. with VPEAK = 1.5V
NCT = 00
( c )
260
( c )
mV
NCT = 01
( c )
220
( c )
mV
NCT = 10
( c )
180
( c )
mV
NCT = 11
( c )
140
( c )
mV
VRECT
Rectifier Voltage
VMPX = 0mV
NRD 6) = 00
0.5
0.9
1.3
V
VMPX = 50mV; f = 150KHz
1.5
1.7
2.1
V
VMPX = 200mV; f = 150KHz
2.2
2.5
2.9
V
VRECT DEV
deviation dependent
rectifier Voltage 3)
meas. with VMPX =
800mV (75KHz dev.)
OVD = 11
0.5
0.9
1.3
V
OVD = 10
0.9
1.2
1.5
V
OVD = 01
1.7
2
2.3
V
OVD = 00
2.5
2.8
3.1
V
VRECT FS Fieldstrength Controlled
Rectifier Voltage 4)
Rectifier Voltage 4)
VMPX = 0mV
VLEVEL << VSBL
(fully mono)
FSC = 11
0.5
0.9
1.3
V
FSC = 10
0.9
1.4
1.5
V
FSC = 01
1.7
1.9
2.3
V
FSC = 00
2.1
2.4
3.1
V
TS
Suppression Pulse
Duration 5)
Signal HOLDN
in Testmode
BLT = 00
38
µs
BLT = 10
32
µs
BLT = 01
25.5
µs
BLT = 00
22
µs
Table 25. Stereo Decoder (continued)
(Vcc = 8V; deemphasis time constant = 50µs, VMPX = 305mVrms (75kHz deviation), fm= 1kHz, Gv = 4dB,
Tamb = 27°C; unless otherwise specified)



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