TDA4950 SGS-Thomson-Microelectronics, TDA4950 Datasheet

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TDA4950

Manufacturer Part Number
TDA4950
Description
TV EAST/WEST CORRECTION CIRCUIT
Manufacturer
SGS-Thomson-Microelectronics
Datasheet

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TDA4950 DIP 8P
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DESCRIPTION
The TDA4950 is a monolithic integrated circuit in a
8 pin minidip plastic package designed for use in
the east-west pin-cushion correction by driving a
diode modulator in TV and monitor applications.
PIN CONNECTIONS
October 1998
FRAME SAWTOOTH CURRENT INPUT
LOW DISSIPATION
SQUARE GENERATOR FOR PARABOLIC
CURRENT
EXTERNAL KEYSTONE ADJUSTMENT (sym-
metry of the parabola)
INPUT FOR DYNAMIC FIELD CORRECTION
(beam current change)
STATIC PICTURE WIDTH ADJUSTMENT
PULSE-WIDTH MODULATOR
FINAL STAGE D-CLASS WITH ENERGY RE-
DELIVERY
PARASITIC
DURING FLYBACK TIME OF THE VERTICAL
SAWTOOTH
KEYSTONE CORRECTION INPUT
CURRENT REFERENCE
PARABOLA
GND
SUPPRESSION,
TV EAST/WEST CORRECTION CIRCUIT
1
2
3
4
8
7
6
5
NON-INVERTING INPUT 100 A CURRENT SINK
PARABOLA OUTPUT INVERTING INPUT
+V
OUTPUT
S
POWERDIP8 (Th = 0.4mm)
ORDER CODE : TDA4950
(Plastic Package)
TDA4950
1/5

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TDA4950 Summary of contents

Page 1

... DELIVERY PARASITIC PARABOLA DURING FLYBACK TIME OF THE VERTICAL SAWTOOTH DESCRIPTION The TDA4950 is a monolithic integrated circuit pin minidip plastic package designed for use in the east-west pin-cushion correction by driving a diode modulator in TV and monitor applications. PIN CONNECTIONS KEYSTONE CORRECTION INPUT FRAME SAWTOOTH CURRENT INPUT ...

Page 2

... TDA4950 BLOCK DIAGRAM TDA4950 CURRENT LIMITER Q1 Q13 OP1 FULL-WAVE RECTIFIER ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage S I Supply Current S P Power Dissipation at T tot Storage and Junction Temperature stg j THERMAL DATA ...

Page 3

... D push-pull output amplifier that drives, via an external inductor, the diode modulator and S2 in "a" position, fr Min. Typ. 0.28 0.71 – 40 100 0 1 SATH SATL TDA4950 Max. Unit 1 3/5 ...

Page 4

... L1 LM 10mH 4. FRAME FRAME 1 3 RT1 100k Keystone Adj. RT3 R5 R1 RT1 Pin-cushion adjustment R3 RT2 47k R4 7 18k TDA4950 6 C2 100nF 4.7nF 1N4148 12k 1k Hfly from L.T. R5 RT3 RT2 R3 C1 47nF Width ...

Page 5

... STMicroelectronics - All Rights Reserved 2 C system, is granted provided that the system conforms to 2 the I C Standard Specifications as defined by Philips. STMicroelectronics GROUP OF COMPANIES http://www.st.com TDA4950 Inches Min. Typ. 0.130 0.020 0.055 0.065 0.036 0.041 0.020 0.015 0.020 0.386 ...

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