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參數(shù)資料
| 型號： | TDA9102 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | H/V PROCESSOR FOR TTL V.D.U |
| 中文描述： | 水平/垂直處理器的TTL顯示單元 |
| 文件頁數(shù)： | 5/7頁 |
| 文件大?。?/td> | 84K |
| 代理商： | TDA9102 |
ELECTRICAL CHARACTERISTICS
(continued)
(T
AMB
= 25
o
C, V
S
= 12V,refer to the test circuits, unless otherwise specified)
Symbol
VERTICAL SECTION
Parameter
Test conditions
Min.
Typ.
Max.
Unit
K
17
Frequency drift versus supply voltage K
17
=
dF .
10
6
dV .
f
V
V
S
= 10.5V to 15.5V
300
ppm
V
9
1
2
C2
R1
R2
I1
if
C1
C3
R3
3
HOR. SYNC.
1
HORIZONTAL
OSCILLATOR
V
3L
V
3H
V
3H
V
DC
V
DC
V
3L
9
V (V)
t (s)
V
L
=5.2V
=6.8V
= 6V
V
V
H
= 2V
V
LL
1/fv
ts
9
Technical note 1
f
H (nom)
= 26.8kHz
R1 = 6.8k
R2 = 56 k
C2 = 1.8 nF
f
pull-in
= f
H (nom)
V
3
V
1
/ R2
where: V
1
= 3.5V and
V
3
- V
1
is the control
voltage range.
The voltage at Pin 3 is limited by two clamping
diodes at the voltage V
3H
and V
3L
When the PLL1 is synchronized and perfectly
tuned, V
3
= V
1
.
V
/ R1
= f
H (nom)
I
f
I
(A)
Remark
: The valueof C2 influencesthehorizontal
oscillator free running frequency; it doesn’t effect
the relative pull-in range. If the
quency is changed by using R1, the pull-in range
changes accordinglywith the formula(A).
horizontal fre-
Technical note 2
The internalpulse ”t
5
”, is generated by the current
generator ”I
5
” charging the external capacitor
”C5”, accordingwith the formula(B):
t
5
=
C5 . V
5
I
5
12
(
B
)
, t
5
=T
H
is recommended.
Technicalnote 3
K
9
= 67.5 degrees/voltrepresentsthe slope of the
oscillatorcharging periodof the waveform at
Pin2:
K
9
=360 x 0.75
4
V
degree
Technicalnote 4
The second PLL can recover the storage of hori-
zontal output stage maintaining a constant duty
cycle till the trailing edge of the output pulse gets
the trailing edge of the flyback pulse. From this
pointon, onlythe leadingedge of the output pulse
willbe shifted coveringatotalphaseshiftof: 0.30T;
overcoming thisvalue,it will producea notchinthe
output pulse (@ f
H
= 27kHz).
Technicalnote 5
The voltage reference at Pin 19 can be used to
polarize the DC operating point of the vertical
booster.This voltage correspondsto the doubleof
the mean value voltageof the verticalsawtooth at
Pin13.
Technicalnote 6
V
H
V
L
t
s
t
s
=
(
V
H
V
L
)
(
V
H
V
LL
)
=
V
H
V
LL
1/f
V
1
f
V
=
K
14
f
V
TDA9102C
5/7
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相關(guān)代理商/技術(shù)參數(shù) |
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| TDA9102C | 制造商:Panasonic Industrial Company 功能描述:IC |
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