AN2512S PANASONIC
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Technical content
ICs for Video Camera Panasonic en Electronic View-finder Driving IC Wi Overview Unit! mm The AN2512S is an integrated circuit designed for dri- ving the monochrome monitor (view-finder) of the video IS camera, and it is possible to easily make up a 1.5-inch “tie fms electronic view finder driving circuit by inputting a video Eiras| fms signal. eo Epi a 2) co Fou 5 @ Features a 10 2 + Video amp, synchronous separation circuit, horizontal/ver- OEE os tical oscillation circuit, AFC circuit, and vertical driving sea [ios circuit built-in — + A vertical deflection coil can be driven directly. . 3 + Horizontal oscillating and vertical synchronous separat- 3 Ff ing capacitors built-in = % {sie} 7 + Low current consumption (loc 14mA typ. with no load) 422034 | 6503 |UPin PANAFLAT Package (SOPOI4-P-0225) Ics tor Video . (Camera Block Diagram Veo GND
7 Phase SYNC
H-OsC Comp. /t- 648 Sep. Amp. = V-SYNC Sep. H- BLK V-BLK V - DEF Coil Le Vee GND MF S69328652 0004678 SF Panasonic 599 eee OL Eee...
AN2512S ICs for Video Camera Hl Absolute Maximum Ratings (Ta=25‘C) Supply voltage | VeeWVen [SS v Power dissipation (Ta=75U) [Po | oem Operating ambient temperature =20 to +75 c Storage temperature € * Value when mounted on the printed circuit board Hi Recommended Operating Range (Ta=25°C) Parameter ‘Symbol Range Operating supply voltage range 4.5V to 5.3V @ Electrical Characteristics (Voci=SV, Veo.=5V, Ta=25C) [es] as] 8] ma Cireuit current No load [ss[ 10 14] ma " A Input a video signal (1Vep) to Pin®, Video amp gain G» | measure the output of Pind 5a 79| «B : Input a video signal (1.3Vpp) to Pin®, ‘Video amp dynamic range DR, measure the output of Pin) 17 24 25 Vv Synchronous separating Input only SYNC to Pin) and measure the capability (1) seo | minimum level at which synchronization is provided. 92 v : Input SYNC (0.29V;p) plus video component Sy beck Hse | to Pint) and measure the maximum video 13 v spabunty level at which synchronization is provided. Horizontal free-oscillation Measure the output frequency of Pin in frequency | | the horizontal free oscillation mode. 13.75 | 15:95 | 1775 |. Kile Input a signal from Pin@) and measure Vertical separating time vp | the difference in falling between Pin) 750 Hs output and input VD. Vertical free-oscillation Measure the oscillation frequency of Pin) sa] s8] He frequency vo _| inthe vertical free-oscillation mode. Vertical deflection output Input a signal (1Vep) from Pin® and amplitude (1) PvpeFit) | measure the output of Pin®). 14 17 2 v Vertical deflection output Input a signal (1Vpp) from Pin@ and amplitude (2) evper®) | measure the output of Pin). 4] 17 2} Vv ‘Vertical output dynamic Input a signal (1Vpp) from Pin@) and range (1) Davoer | measure the output of Pin’). at] 25 M Vertical output dynamic Input a signal (1Ver) from Pin® and . range (2) Davocrta)_| measure the output of Pin), arse | MH 6932652 OO)4679 42T mp Panasonic 600
ICs for Video Camera AN2512S i Application Circuit Voe=5¥ Co input s = ¢ ic 0.022 uF $s ey £3 +8 a3 22 =] E BY SS deel — AN2512S 1 2 3 4 5 6 7 le : i C = Pin Descriptions Video [Camera
1 Vertical size control Control the V size of the vertical
input ae deflection coil driving pin. pe Vertical deflection driving circuit 2 —F lye —__ 3 _ | Vertical deftection WV Vertical deflection coil driving out- coil driving Pin) pat pe Vertical deflection driving circuit ‘ GND
5 Vertical deflection Vertical deflection coil driving out- |
coil driving Pin) Vm put (inversion of Pin®) Vertical oscillating aye . fa Panasonic 601 eee
AN2512S ICs for Video Camera — OO Pin Descriptions (cont.) ra Ea ae sal occiltai Determines the vertical free-oscil- 7 | erica oscillating ATW % lation frequency by the resistor of P§ pu Pin® and capacitor of Pin@. § fo | 8 [mincrsronn | _ 6 | Video input «PX, Capes y the video signal input — t ° [mero | mp | mincrmtves | _ 11 | Video amp output Amplified to the video amp signal pin D* output (6.5dB). Phase comparator v ‘The output DC of the phase com- 12 | output - pparator changes and AFC operates. He Taseed LLpeaaaeal iad 13. | Horizontal oscitaing pe | Horizontal free-scillation frequen- resistor pin ———%&_| cy determining resistor. v A pulse waveform synchronized 14 _ | Horizontal ARC sv_ | with a horizontal oscillation wave- output : form is output. ov Sb 992852 0014681 0866 LL Panasonic 602
ICs for Video Camera AN2512S —S_$ @ Supplementary Explanation + Instructions for Using IC 1. Horizontal free-oscillation frequency adjusting method ‘The frequency of PinG3 should essentially be adjusted to 15.75kHz by the counter, changing the resistor of Pin) at no signal input. But this causes the voltage of Pin (AFC detecting pin) to be about 2V when a signal is input. Because supply voltage is SV (typ.), itis desirable to use a digital voltmeter so that the voltage of Pin may be 2.5V, considering dispersion, etc. 2. External constant of Pin@3 ‘The following value is recommeded to take in the dispersion of horizontal free-oscillation frequency of IC. © took “nee + 3. Vertical oscillating R.C. High-precision parts should be used for the grounding resistor of Pin@) and grounding capacitor of Pin@) which determine vertical free-oscillation frequency. Because of 54Hz (typ.) at C;=0.1 ,F and Re=30k, the value of Rg is desirable to be 33 to 36k Q,, considering the dispersion and temperature characteristics of IC in order not to be out of vertical synchronization . 4. Power filter It is recommended to use the following filter for power pins of Pins@) and @, to prevent from being out of vertical ‘synchronization and horizontal noise. C2 of good temperature characteristics should be used. Os, —@ baal 2010390 + + ICs for C\\ZEL 220uF Cy = 47 oF Video = [Camera = + Characteristics Curve Horizontal Oscillation Frequency Vertical Oscillation Freqequency Veatical Deflection Outpat Dynamic Range Fy 200 > 3 ‘Vor =5¥ HE ve] Poo Ei LT ITT 3 | {TT | SERSS0 000000008 > | 111 | | 1] Unni ECE ey 3” | e 150 i — PET ere g Hann | |] @ COCO
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