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參數(shù)資料
| 型號(hào)： | TDA7513T |
| 廠(chǎng)商： | 意法半導(dǎo)體 |
| 英文描述： | SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR |
| 中文描述： | 單芯片F(xiàn)M /調(diào)幅調(diào)諧立體聲解碼器和音頻處理器 |
| 文件頁(yè)數(shù)： | 15/59頁(yè) |
| 文件大小： | 520K |
| 代理商： | TDA7513T |
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TDA7513T
4.4 NOISE BLANKER
Table 26. Noise Blanker
Symbol
VHCL
min
VHCL
max
VHCL
step
Carrier and harmonic suppression at the output
α
19
Pilot Signal f = 19KHz
α
38
Subcarrier f = 38KHz
α
57
Subcarrier f = 57KHz
α
76
Subcarrier f = 76KHz
Parameter
Test Condition
Min.
12
28
2.2
Typ.
17
33
4.2
Max.
22
38
6.2
Unit
%VHCH
%VHCH
%VHCH
Min. Voltage for FULL Highcut
Max. Voltage for FULL Highcut
Step Resolution
40
50
dB
dB
dB
dB
75
62
90
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
V
TR
Trigger Threshold
0) 1)
meas. with V
PEAK
= 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
V
TRNOISE
Noise Controlled
Trigger
threshold
2)
meas. with V
PEAK
= 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
V
RECT
Rectifier Voltage
V
MPX
= 0mV
NRD
6)
= 00
0.5
0.9
1.3
V
V
MPX
= 50mV; f = 150KHz
1.5
1.7
2.1
V
V
MPX
= 200mV; f = 150KHz
2.2
2.5
2.9
V
V
RECT DEV
deviation dependent
rectifier Voltage
3)
meas. with V
MPX
=
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
V
RECT FS
Fieldstrength Controlled
Rectifier Voltage
4)
Rectifier Voltage
4)
V
MPX
= 0mV
V
LEVEL
<< V
SBL
(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
T
S
Suppression Pulse
Duration
5)
Signal HOLDN
in Testmode
BLT = 00
38
μ
s
μ
s
μ
s
μ
s
BLT = 10
32
BLT = 01
25.5
BLT = 00
22
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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