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參數資料
| 型號： | LA7850 |
| 元件分類： | 偏轉 |
| 英文描述： | HORIZ/VERT DEFLECTION IC, PDIP20 |
| 封裝： | SLIM, DIP-20 |
| 文件頁數： | 2/5頁 |
| 文件大小： | 261K |
| 代理商： | LA7850 |
LA7850
No.1581-2/5
Specifications
Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V10, V20 max
14
V
Allowable power dissipation
Pd max
Ta
≤ 65°C
780
mW
Operating temperature
Topr
20 to +85
°C
Storage temperature
Tstg
55 to +125
°C
Operating Conditions at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Recommended supply voltage
V10, V20
12
V
Operating voltage range
V10, V20
9 to 13.5
V
Recommended vertical pulse input peak value
Vpulse
5Vp-p
Operating vertical pulse input peak value range
Vpulse
2 to 6
Vp-p
Recommended horizontal pulse input peak value
Hpulse
5
Vp-p
Operating horizontal pulse input peak value range
Hpulse
2 to 6
Vp-p
Electrical Characteristics at Ta = 25
°C, V10, V20 = 12V
Ratings
Parameter
Symbol
Conditions
min
typ
max
Unit
VCC10 current drain
I10
12
30
mA
VCC20 current drain
I20
5
12
mA
Vertical frequency pull-in range
Vp in
Vertical sync 60Hz
10.0
12.0
Hz
Vertical free-running frequency
fv
fv center 55Hz
50
60
Hz
Increased/reduced voltage characteristic of vertical
frequency
Δfvv
V20 = 12 ±1V, 55Hz at 12V
0.1
+0.1
Hz
Midpoint control threshold level
3.8
4.4
V
Vertical OSC start voltage
fvst
4.0
V
Temperature characteristic of vertical frequency
Ta =
10 to +60°C
0.028
+0.028
Hz/
°C
Vertical driver amplification factor
GV
12
18
dB
Horizontal AFC DC loop gain
IAFC
±0.85
±1.6
mA
Horizontal free-running frequency
fH
fH center 15.734kHz
750
+750
Hz
Horizontal OSC start voltage
fH st
4.0
V
Increased/reduced voltage characteristic of
horizontal frequency
ΔfH V
V10 = 12 ±1V, 15.734kHz at 12V
50
+50
Hz
Horizontal OSC warm-up drift
ΔfH
5s. to 30min. after application of power
50
+50
Hz
Temperature characteristic of horizontal frequency
Ta =
10 to +60°C
2.9
+2.9
Hz/
°C
Horizontal output drive current
I12
6.0
12.0
mA
Increased/reduced voltage characteristic of phase
shifter delay time
V10 = 12 ±1V
0.5
+0.5
%/V
Temperature characteristic of phase shifter delay time
Ta =
10 to +60°C
0.1
+0.1
%/
°C
Increased/reduced voltage characteristic of phase
shifter delay time
V10 = 12 ±1V
1.0
+1.0
%/V
Temperature characteristic of phase shifter pulse width
Ta =
10 to +60°C
0.13
+0.13
%/
°C
AFC phase comparison delay time
15.734kHz after F.B.P. input
9.9
11.5
μs
Increased/reduced voltage characteristic of AFC
phase comparison delay time
V10 = 12 ±1V
1.5
+1.5
%/V
Temperature characteristic of AFC comparison
delay time
Ta =
10 to +60°C
0.2
+0.2
%/
°C
Comparison waveform generating input operation
voltage
V4
0.6
0.9
V
pin 13 voltage at hold-down operation start
V13
0.5
0.8
V
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