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參數(shù)資料
| 型號： | TEA2031A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | COLOR TV EAST-WEST CORRECTION |
| 中文描述： | 彩電東西校正 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 91K |
| 代理商： | TEA2031A |
3/11
TEA2031A
the required current via a series resistor to pin 1.
Likewise, the current to pin 2 is drawn through a
series resistor from an external dc voltage source.
These series resistors can have values of around
40k
resulting in input currents of approximately
0.1mA ± modulation current.
Pin 7 should be loaded to ground through a 100k
resistor which as a result will produce a parabola
of 5 volts peak-to-peak at pin 7. This parabola is
symmetrical if the DC current flowing into pin 2 is
equal to the mean input current of pin 1. Other-
wise, the parabola becomes dissymmetrical and
produces a keystone effect correction.
The line saw-tooth at pin 8 is obtained by feeding
the line fly-back voltage through an integrator net-
work formed by a diode and a grounded capacitor
(see typical application diagram). The DC compo-
nent of the line saw-tooth is compensated by an in-
ternal current sinking source ; so that the mean DC
values of line saw-tooth and frame parabola volt-
ages are equal.
Line saw-tooth and frame parabola signals are ap-
plied to a comparator whose output is in the form
of width modulated pulses. During every pulse du-
ration, the output (pin 5) can sink external coil cur-
rents of up to 0.5A associated with diode
modulator of the main horizontal scanning circuit.
An internal recovery diode feeds back the fly-back
energy of the coil to the power supply. This diode
can carry currents of up to 0.5A.
Table 1. Absolute Maximum Ratings
Symbol
Table 2. Thermal Data
(T
amb
= + 50°C)
Symbol
Table 3. ELECTRICAL OPERATING CHARACTERISTICS
Parameter
Value
Unit
V
6–4
Supply Voltage
35
V
I
5–4
Output Sink Current
0.5
A
I
5–6
Diode Output Current
0.5
A
I
1
and I
2
Input Current
– 0.5
mA
P
TOT
Power Dissipation
0.8
W
T
STG
Storage Temperature Range
– 20 to 150
°C
I
5–4
Non Repetitive Peak Current on Output Transistor
1.5
A
I
5–6
Non Repetitive Peak Current on Output Diode
1.5
A
Parameter
Value
Unit
R
th (j-a)
Junction-ambient Thermal Resistance
80
°C/W
Symbol
Parameter
Min.
Typ.
Max.
Unit
V
6–4
Supply Voltage
16
24
35
V
I
6
Supply Current (R
(3-4)
= 22k
; I
OUT
= 0)
4
6
mA
No Load Consumption (R
(3-4)
= 22k
; I
OUT
= 0 ; V
(6-4)
= 24V)
100
150
mW
V
3–4
Voltage Reference (R
(3-4)
= 22k
)
5.9
6.3
6.7
V
I
1
mean
Frame Saw-tooth Input DC Mean Current
R1 = 39k
at 2.5V Mean - saw-tooth Voltage
0.1
mA
I
1PP
Frame Saw-tooth Input Peak-to-peak Current
R1 = 39k
at 2.5V Mean - saw-tooth Voltage
70
μ
A
I
2
Keystone Correction Input DC Current
If I
1
Mean = I
2
: No Keystone Effect. R
2
= 39k
at 2.5V DC ref.
0.1
mA
I
2
Keystone Correction Input DC Current for Maximum Keystone Effect
± 12.5
μ
A
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