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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(yè)數(shù)： | 2/9頁(yè) |
| 文件大小： | 404K |
| 代理商： | LA7578N |
Specifications
Maximum Ratings at Ta = 25 °C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
VCC max
13.8
V
Allowable power dissipation
Pd max
Ta
% 50 °C
1200
mW
Circuit voltage
V3,V13
VCC
V
V14
VCC
V
Circuit current
I1
–1
mA
I17
–10
mA
I21
–3
mA
I10
3mA
Operating temperature
Topr
Note 1
–20 to +70
°C
Storage temperature
Tstg
–55 to +150
°C
Note : The current that flows into the IC is positive (no signal); the current that flows out of the IC is negative.
Note 1 : –20 to +75 °Cat VCC =9 V
Operating Conditions at Ta = 25 °C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
VCC
9or12
V
Operating supply voltage range
VCC op
8.2to13.2
V
Note: . Always turn on the protective resistance when drawing a line directly out from the IC at usage. (Pins 2, 11, 12, etc.)
.
A capacitor with favorable humidity characteristics should be used for pin 13. (ex. OS capacitor)
.
Pin 8 (NC) should always be open.
Operating Characteristics at Ta = 25 °C, VCC =12 V
Parameter
Symbol
Conditions
min
typ
max
Unit
[VIF Block]
Circuit current
I9
V13 =5V, S1 =ON
42
48
57
mA
No-signal video output voltage
V21
V13 =5V, S1 =ON
6.6
7
7.4
V
Maxinum RF AGC voltage
V10H
V13 = 7 V, S1 = OFF
10.6
11
11.4
V
Mininum RF AGC voltage
V10L
V13 =7V, S1 =ON
0
0.5
V
No-signal AFT voltage
V14
V13 =5V, S1 =ON
3.0
5.9
8.0
V
Input sensitivity
Vi
S1 = OFF
33
39
45
dB/μV
AGC range
GR
S1 = ON
60
66
dB
Maxinum allowable Input
Vi max
S1 = ON
100
105
dB/μV
Video output amplitude
VO (video)
S1 = ON
1.95
2.25
2.55
Vp-p
Output S/N
S/N
S1 = ON
49
55
dB
Sync signal tip voltage
V21 (tip)
Vi = 10 mV, S1 = ON
4.15
4.45
4.75
V
920 kHz beat level
I920
P = 0, C = –4 dB, S = –14 dB, S1 = ON
37
43
dB
Frequency characteristics
fc
P = 0, S = –14 dB
6
8
MHz
Differential gain
DG
Vi = 10 mV, 87.5% mod,
fp = 58.75 MHz
36
%
Differential phase
DP
25
deg
Maxinum AFT voltage
V14H
11
11.5
12
V
Mininum AFT voltage
V14L
00.4
1.0
V
White noise threshold voltage
VWTH
8.9
9.3
9.7
V
White noise clamp voltage
VWCL
5.3
5.7
6.1
V
Black noise threshold voltage
VBTH
S1 = ON
3.4
3.7
4.0
V
Black noise clamp voltage
VBCL
S1 = ON
5.3
5.7
6.1
V
Continued on next page.
LA7578N
No.4952-2/18
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