TDA4950 Datasheet, PDF (4/5 Pages) STMicroelectronics – TV EAST/WEST CORRECTION CIRCUIT

TDA4950
Figure 3 : Application Circuit with Keystone Correction
Line Transformer
(L.T.)
Pin 1
Voltage
LM
L1
10mH
Pin-cushion
adjustment
R3 RT2
R1 = ^VFRAME
66µA_PP
4.7kΩ
5
47kΩ
7
R4
18kΩ
C1
47nF
V_FRAME
2
TDA4950
6
V_S
1
C2
100nF
3
4
8
RT1
Keystone 100kΩ
Adj.
R2
12kΩ
C3
4.7nF
D1
1N4148
Hfly
from L.T. _R5
1kΩ
RT3
H. Width
Figure 4 : P.C. Board and Component Layout of the Circuit of Figure 3 (1:1 scale)
HFLY
V_FRAME
V_S
GND
TO LM
RT3
D1
R5
C3
R1
C1
R4
RT1
C2
RT2
L1
R2
R3
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