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PDF TDA8214 Data sheet ( Hoja de datos )
| Número de pieza | TDA8214 | |
| Descripción | HORIZONTAL AND VERTICAL DEFLECTION CIRCUIT | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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TDA8214B
HORIZONTAL AND VERTICAL DEFLECTION CIRCUIT
. DIRECT FRAME-YOKE DRIVE (± 1A)
. COMPOSITE VIDEO SIGNAL INPUT CAPA-
BILITY
. FRAME OUTPUT PROTECTION AGAINST
SHORT CIRCUITS
. PLL
. VIDEO IDENTIFICATION CIRCUIT
. SUPER SANDCASTLE OUTPUT
. VERY FEW EXTERNAL COMPONENTS
. VERY LOW COST POWER PACKAGE
DESCRIPTION
The TDA8214B is an horizontal and vertical deflec-
tion circuit with super sandcastle generator and
video identification output. Used with TDA8213
(Video & Sound IF system) and TDA8217 (Pal
decoder and video processor), this IC permits a
complete low-cost solution for PAL applications.
PIN CONNECTIONS
VCC1
FRAME OSCILLATOR
VCC2
FRAME FLYBACK GENERATOR
GROUND
GROUND
POWER AMPLIFIER INPUT
VIDEO IDENTIFICATION OUTPUT
FRAME POWER SUPPLY
FRAME OUTPUT
1
2
3
4
5
6
7
8
9
10
September 1993
POWERDIP 16 + 2 + 2
(Plastic Package)
ORDER CODE : TDA8214B
20 VIDEO INPUT
19 SUPER SANDCASTLE OUTPUT
18 LINE FLYBACK INPUT
17 LINE OUTPUT
16 GROUND
15 GROUND
14 RC NETWORK
13 LINE SAWTOOTH INPUT
12 PHASE DETECTOR
11 LINE OSCILLATOR
1/9
1 page  
TDA8214B
GENERAL DESCRIPTION
The TDA8214B performs all the video and power
functions required to provide signals for the line
driver and frame yoke.
It contains:
- A synchronization separator
- An integrated frame separator without external
components
- A saw-tooth generator for the frame
- A power amplifier for direct drive of frame yoke
(short circuit protected)
- An open collector output for the line driver
Figure 1 : Synchronization Separator Circuit
- A line phase detector and a voltage control oscil-
lator
- A super sandcastle generator
- Video identification output.
The slice level of sync-separation is fixed by value
of the external resistors R1 and R2. VR is an
internally fixed voltage.
The sync-pulse allows the discharge of the capaci-
tor by a 2 x I current. A line sync-pulse is not able
to discharge the capacitor under VZ/2. A frame
sync-pulse permits the complete discharge of the
capacitor, so during the frame sync-pulse Q3 and
Q4 provide current for the other parts of the circuit.
Video
VR
20
R1
R2
SL1 SL2
Figure 2 : Frame Separator
I
SL1
3I
Vz
Q3
ST1
Vz /2
Q4
ST2
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TDA8214.PDF ] | |
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