TEA2031A STMicroelectronics, TEA2031A Datasheet - Page 2

• Manufacturer Part Number: TEA2031A
• Description: IC CORRECTION EAST/WEST 8-PDIP
• Manufacturer: STMicroelectronics
• Type: Videor

Specifications of TEA2031A

• Applications: Displays, Monitors, TV
• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TEA2031A
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.
2/11
1 AND 2 CAN BE INVERTED
SAW-TOOTH
Frame
CURRENT REFERENCE
MULTIPLIER INPUT 1
MULTIPLIER INPUT 2
100Ω
Line SAW-TOOTH
50µA
i
1
GROUND
8
1
120µA
Multiplier
DC
V
CC
1
2
3
4
7
2
Comparator
V
i
K . (I
2
REF
1
- I
6.3V
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
V
2
CC
)
2
6
3
+24V
8
7
6
5
4
COMPARATOR INPUT 2
MULTIPLIER OUTPUT AND COMPARATOR INPUT 1
V
OUTPUT
CC
TEA2031A
5
POWER SUPPLY
6.8mH
MODULATOR
To DIODE