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參數(shù)資料
| 型號(hào)： | LA7578N |
| 元件分類： | 接收器 |
| 英文描述： | FM, AUDIO/VIDEO DEMODULATOR, PDIP24 |
| 封裝： | DIP-24 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 404K |
| 代理商： | LA7578N |
Continued from preceding page.
Parameter
Symbol
Conditions
min
typ
max
Unit
AFT detection sensitivity
Sf
50
70
100
mV/kHz
VIF input resistance
Ri (VIF)
f = 58.75 MHz
0.8
1.3
1.75
k
Ω
VIF input capacity
Ci (VIF)
f = 58.75 MHz
3.0
6.0
pF
APC pull-in range (U)
fPU-2
S1 = ON
0.6
1.6
MHz
APC pull-in range (L)
fPL-2
S1 = ON
–1.6
–0.8
MHz
VCO maximum variable range
ΔfU
V18 =3V, S1 =ON
0.6
1.6
MHz
ΔfL
V18 =7V, S1 =ON
–1.6
–0.8
MHz
VCO control sensitivity
β
V18 =5Vto4.6 V
1.5
3.1
6.2
kHz/mV
SIF output signal voltage
VO (SIF)
P/S = 20 dB
120
170
240
mVrms
[SIF Block] : V13 = 5 V
SIF limiting sensitivity
Vi (lim)
33
39
dB/μV
FM detection output voltage
VO
400
600
790
mVrms
AMR
40
49
dB
Distortion
THD
0.5
1.0
%
SIF S/N
S/N (SIF)
60
78
dB
[Mute Defeat]
AFT defeat start voltage
VD11
0.5
2.3
V
AV mute
V4TH
0.5
1.9
V
FM mute
V2TH
0.5
2.0
V
AFT defeat voltage
VD14
5.4
6
6.6
V
Operating Characteristics at Ta = 25 °C, VCC =9 V
Parameter
Symbol
Conditions
min
typ
max
Unit
[VIF Block]
Circuit current
I9
V13 =5V, S1 =ON
36
41
49
mA
No-signal video output voltage
V21
V13 =5V, S1 =ON
5.0
5.4
5.8
V
Maxinum RF AGC voltage
V10H
V13 =7V, S1 =OFF
7.6
8
8.4
V
Mininum RF AGC voltage
V10L
V13 =7V, S1 =ON
0
0.5
V
No-signal AFT output voltage
V14
V13 =5V, S1 =ON
2.6
4.5
6.0
V
Input sensitivity
Vi
S1 = OFF
37
43
49
dB/μV
Video output amplifude
VO (video)
S1 = OFF
1.5
1.75
2.0
Vp-p
Sync signal tip voltage
V21 (tip)
Vi = 10 mV, S1 = ON
3.25
3.55
3.85
V
Maximum AFT voltage
V14H
88.5
9.0
V
Minimum AFT voltage
V14L
0.3
1.0
V
White noise threshold voltage
VWTH
6.8
7.2
7.6
V
White noise clamp voltage
VWCL
4.0
4.4
4.8
V
Black noise threshold voltage
VBTH
S1 = ON
2.5
2.8
3.1
V
Black noise clamp voltage
VBCL
S1 = ON
3.7
4.1
4.5
V
AFT detection sensitivity
Sf
30
43
60
mV/kHz
SIF output signal voltage
VO (SIF)
P/S = 20 dB
90
130
180
mVrms
[SIF Block]
FM detection output voltage
VO
V13 = 5 V
400
600
790
mVrms
[Mute defeat voltage]
AFT defeat start voltage
VD11
0.5
1.6
V
AV mute
V4TH
0.5
1.1
V
FM mute
V2TH
0.5
1.9
V
AFT defeat voltage
VD14
3.9
4.5
5.1
V
LA7578N
No.4952-3/18
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