TDA8215B ,HORIZONTAL AND VERTICAL DEFLECTION CIRCUITFEATURES SUMMARY Figure 1. Package■ DIRECT LINE DARLINGTON DRIVE■ DIRECT FRAME-YOKE DRIVE (± 1A)■ C ..
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TIBPAL16L8-15MJB ,High-Performance Impact<TM> PAL<R> Circuits 20-CDIP -55 to 125TIBPAL16L8-15M is Not Recommended for New DesignsTIBPAL16L8-15M, TIBPAL16R4-15M®HIGH-PERFORMANCE IM ..
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TDA8215B
HORIZONTAL AND VERTICAL DEFLECTION CIRCUIT
1/15May 2004
TDA8215BHORIZONTAL AND VERTICAL DEFLECTION CIRCUIT
REV. 2
FEATURES SUMMARY DIRECT LINE DARLINGTON DRIVE DIRECT FRAME-YOKE DRIVE (± 1A) COMPOSITE VIDEO SIGNAL INPUT
CAPABILITY FRAME OUTPUT PROTECTION AGAINST
SHORT CIRCUITS PLL VIDEO IDENTIFICATION CIRCUIT SUPER SANDCASTLE OUTPUT VERY FEW EXTERNAL COMPONENTS VERY LOWCOST POWER PACKAGE
DESCRIPTIONThe TDA8215B is an horizontal and vertical de-
flection 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. The TDA8215B has been specially
designed for direct drive of line DARLINGTON
transistors.
Figure 1. Package
Figure 2. Pin Connections
TDA8215B
Figure 3. Block Diagram
Table 1. Absolute Maximum Ratings
Table 2. Thermal Data
3/15
TDA8215B
ELECTRICAL CHARACTERISTICS VCC1 = 10V, TAMB = 25°C (unless otherwise specified)
Table 3. Supply (Pin 1)
Table 4. Video Input (Pin 20)
Table 5. Line Oscillator (Pin 11)
Table 6. Line Output (Pin 17)
Table 7. Line Sawtooth Input (Pin 13)
TDA8215B
Table 8. Phase Detector (Pin 12)
Table 9. Video Identification (Pin 8)
Table 10. Frame Oscillator (Pin 2)
Table 11. Frame Power Supply (Pin 9)
Table 12. Flyback Generator Supply (Pin 3)
5/15
TDA8215B
Table 13. Frame Output (Pin 10)
Table 14. Flyback Generator (Pin 3 and Pin 4)
Table 15. Super Sandcastle Output (Pin 19)Note:1. Width of vertical blanking pulse on SSC output is proportional to the frame flyback time, the switching level is VCC2 -2VBE and the
other input of the comparator is tied to the frame amplifier output. Application circuit uses the frame flyback generator.
TDA8215B
Table 16. Line Flyback Input (Pin 18)Note:1. An RC network is connected to this input. Typical value for the resistor is 27kΩ and 220pF for the capacitor. A different time constant
for RC changes the delay between the middle of the line synchro pulse and the leading edge of the burst key pulse but also the
duration of the burst key pulse.
7/15
TDA8215B
GENERAL DESCRIPTIONThe TDA8215B 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 darlington
drive A line phase detector and a voltage control
oscillator 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 inter-
nally fixed voltage.
The sync-pulse allows the discharge of the capac-
itor 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.
Figure 4. Synchronization Separator Circuit
Figure 5. Frame Separator
TDA8215B
Figure 6. Line OscillatorThe oscillator thresholds are internally fixed by re-
sistors. The discharge of the capacitor depends on
the internal resistor R4. The control voltage is ap-
plied on resistor R5. The sync-pulse drives the
current in the comparator. The line flyback inte-
grated by the external net work gives on pin 13 a
saw tooth, the DC offset of this saw tooth is fixed
by VC. The comparator output provides a positive
current for the part of the signal on pin 13 greater
than to VC and a negative current for the other
part.When the line flyback and the video signal are
synchronized, the output of the comparator is an
alternatively negative and positive current. The
frame sync-pulse inhibits the comparator to pre-
vent frequency drift of the line oscillator on the
frame beginning.
Figure 7. Phase Comparator
