LA7806

TIGER ELECTRONIC CO.,LTD B/W TV Synchronization, Deflection Circuit D ESCRIPTION: T he LA7806 is a mu ltifunctional integrated circuit, incorporates various functions required for synchronization and deflection circuits of monochromatic television set, and operates on line voltage or from battery. This IC was so designed as to streamline the set by making the device more compact (DIP-16) and reducing the number of parts. LA7806 outline drawing F EATURES T he ground pins for horizontal and vertical are provided separately. M inimum number of parts required. H orizontal and vertical oscillators being stable to variation of ambient temperature and supply voltage owing to small warming-up drift. S mall variation of horizontal oscillation frequency. G ood linearity and interlace owing to DC bias at vertical output stage being sampling controlled within retrace time. V ertical blanking pulse width being freely set up according to peripheral parts. A BSOLUTE MAXIMUM RATINGS ( Ta=25 ° C) C HARACTERISTICS Maximu m supply voltage A llowable power dissipation O perating temperature S torage temperature SYMBOL V 1 2 ,V 1 5 Pd max Topr Tstg CONDITION Ta=6 0 ° C VALUE 14 450 -20~ +85 -55 ~ +125 UNITS V mW °C °C R ECOMMENDED OPERATING CONDITION (Ta=25 ° C) C HARACTERISTICS Recommended supply voltage SYMBOL V12 ,V15 CONDITION VALUE 12 UNITS V SHAOXING SILICORE TECHNOLOGY CO.,LTD www. Silicore. com. cn 1/3 CHMC LA7806 E LECTRICAL CHARACTERISTICS ( Ta=2 5 ° C) Characteristics Symbol Te s t C o n d i t i o n s Min 10.0 6.0 9.0 fV center 55Hz V12=12±1V 55Hz at 12V Ta = - 1 0 t o + 6 0 ℃ 50 -0.5 -0.028 4.0 Ty p Max 19.0 11 . 0 11 . 0 60 +0.5 +0.028 7.0 +750 +50 +3.4 Unit mA mA Hz Hz Hz Hz/℃ times Hz Hz Hz/℃ µs mA V c c 1 2 c urrent drain V c c 1 5 c urrent drain Ve r t i c a l f r e q u e n c y p u l l - i n r a n g e Ve r t i c a l f r e e - r u n n i n g f r e q u e n c y Supply voltage dependence of vertical frequency Te m p e r a t u r e c h a r a c t e r i s t i c o f vertical frequency Ve r t i c a l d r i v e r a m p l i f i c a t i o n factor Horizontal free-running frequency Supply voltage dependence of horizontal frequency Te m p e r a t u r e c h a r a c t e r i s t i c o f horizontal frequency Horizontal output pulse width Horizontal output driver current Icc12 Icc15 fV 1 3.0 8 .0 1 0.0 5 5.0 fH fH center 15.750kHz V15=12±1V 15.750kHz at 12V Ta = - 1 0 t o + 6 0 ℃ fH=15.750kHz -750 -50 -3.4 21.5 4.2 2 4.0 6 .0 26.5 7.8 P OWER DISSIPATION CURVE SHAOXING SILICORE TECHNOLOGY CO.,LTD www. Silicore. com. cn 2/3 CHMC LA7806 A PPLICATION CIRCUIT ※ Polyester-polypropylene film capa citor Unit(resistance: Ω , capacitance:F) N ote) 1.The vertical The vertical output circuit is shown by the basic circuit. 2. The peripheral parts at pin 8 should be changed in accordance with the Ver. Out circuit conditions. 3. The limiting resistor (220 Ω : 1 Vp-p) at pin 14 should be changed in proportion to the magnitude of the input video signal. 4. In the time constant circuit (120k Ω , 4.7 µ F) at pin 14, the time constant should be changed by changing the resistance value in accordance with the DC level of the input video signal and then by changing the capacitance value. P eripheral parts at pin 8 (other applications) R1 L ine operate B attery drive(pump-up) 220k Ω 220k Ω C1 0 .01µF 0 .0033µF R2 68k Ω 68k Ω C2 0 .068µF 0 .068µF SHAOXING SILICORE TECHNOLOGY CO.,LTD www. Silicore. com. cn 3/3 CHMC