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參數(shù)資料
| 型號(hào)： | TEA2031A |
| 廠(chǎng)商： | STMICROELECTRONICS |
| 元件分類(lèi)： | 偏轉(zhuǎn) |
| 英文描述： | EAST-WEST CORRECTION IC, PDIP8 |
| 封裝： | MINI, DIP-8 |
| 文件頁(yè)數(shù)： | 4/11頁(yè) |
| 文件大?。?/td> | 105K |
| 代理商： | TEA2031A |
Obsolete
Product(s)
- Obsolete
Product(s)
TEA2031A
2/11
Figure 2. Pin Connections
Figure 3. Block Diagram
GENERAL DESCRIPTION
The TEA2031A is intended to provide to 110° color
TV sets a parabolic and keystone frame rate mod-
ulated correction in addition to the main horizontal
scanning.
A stable 6.3V internal reference provides current
and voltage references to the whole IC.
Pins 1 and 2 are two symmetrical inputs of an on-
chip multiplier circuit and are internally held at
6.3V reference potential level. Current inputs to
these pins are drawn from external sources via ap-
propriate resistors. The frame saw-tooth wave-
form which has a peak-to-peak value of around 3
volts and a mean value of about 2.5 volts, supplies
1
2
3
4
8
7
6
5
MULTIPLIER INPUT 1
CURRENT REFERENCE
GROUND
MULTIPLIER INPUT 2
COMPARATOR INPUT 2
MULTIPLIER OUTPUT AND COMPARATOR INPUT 1
OUTPUT
CC
1 AND 2 CAN BE INVERTED
V
POWER SUPPLY
65
87
6.8mH
To DIODE
MODULATOR
123
4
39K
VCC +24V
Multiplier
DC
6.3V
i1
VREF
K . (I1 - I2)
2
VCC
50
A
Comparator
100
Line SAW-TOOTH
TEA2031A
120
A
i2
Frame
SAW-TOOTH
39K
22K
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