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參數資料
| 型號： | LA7577N |
| 元件分類： | 接收器 |
| 英文描述： | FM, AUDIO SINGLE CHIP RECEIVER, PDIP24 |
| 封裝： | DIP-24 |
| 文件頁數： | 10/16頁 |
| 文件大小： | 354K |
| 代理商： | LA7577N |
LA7577N
No. 4037—3/16
Electrical Characteristics at Ta = 25
°C, V
CC = 9V
VCO control sensitivity
β
V18 = 4.6 to 5V
1.5
3.1
6.2
kHz/mV
[1st SIF]
4.5MHz conversion gain
VG
21
26
31
dB
4.5MHz output level
VSIF1
Vi = 10mVrms
50
75
110
mVrms
1st SIF stage maximum input
VSIF max
+2.2dB,
1dB
60
70
-
mVrms
1st SIF stage input resistance
Ri (SIF1)
f = 54.25MHz
1.2
2
2.7
k
Ω
1st SIF stage input capacitance
Ci (SIF1)
f = 54.25MHz
–
3
6
pF
[SIF]
SIF limiting sensitivity
Vi (lim)
V13 = 5V
–3339
dB/
μV
FM detector output voltage
Vo
V13 = 5V
400
600
790
mVrms
AM rejection
AMR
V13 = 5V
40
49
–
dB
Total harmonic distortion
THD
V13 = 5V
–
0.5
1.0
%
SIF signal-to-noise ratio
S/N (SIF)
V13 = 5V
60
78
–
dB
[Mute, Defeat]
AFT defeat start voltage
VD11
0.5
2.3
–
V
AV mute threshold
V4TH
0.5
1.9
–
V
FM mute threshold
V2TH
0.5
2.0
–
V
AFT defeat voltage
VD14
5.4
6
6.6
V
Parameter
Symbol
Conditions
min
typ
max
Unit
[VIF]
Circuit current
I9
V13 = 5V
39
48
59
mA
Quiescent video output voltage
V21
V13 = 5V
5.0
5.4
5.8
V
Maximum RF AGC voltage
V10H
V13 = 7V
7.6
8
8.4
V
Minimum RF AGC voltage
V10L
V13 = 7V
–
0
0.5
V
Quiescent AFT voltage
V14
V13 = 5V
2.6
4.5
6.0
V
Input sensitivity
Vi
37
43
49
dB/
μV
Video output amplitude
Vo (video)
1.5
1.75
2.0
Vp-p
Sync signal tip voltage
V21 (tip)
Vi = 10mV
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
2.5
2.8
3.1
V
Black-noise clamp voltage
VBCL
2.5
4.1
4.5
V
AFT detector sensitivity
Sf
28
39
55
mV/kHz
[SIF]
FM detector output voltage
Vo
V13 = 5V
400
600
790
mVrms
[Mute, Defeat]
AFT defeat start voltage
VD11
0.5
1.6
–
V
AV mute threshold
V4TH
0.5
1.1
–
V
FM mute threshold
V2TH
0.5
1.9
–
V
AFT defeat voltage
VD14
3.9
4.5
5.1
V
Parameter
Symbol
Conditions
min
typ
max
Unit
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