uhf rf modulator KA2986D 2 mm-97-d013 98-05-12 preliminary specification(ver 2) general description the KA2986D is a monolithic intergrated circuit of small out-line package designed for use in the uhf rf converter for vcdp and home appliances. the video and audio baseband signal carried by the uhf rf carrier is sent to the tuner of tv. features ? fm audio modulation ? 5v supply voltage ? picture to sound ratio adjustment ? built-in mixer facilitates the rf unit design ? operates on the 400mhz to 700mhz wide band ? negative video modulation ? clipping of peak white level block diagram ordering information device package operating temperature KA2986D 16-sop-225 -20 ? ~ +70 ? rf oscillator rf amplifier audio amplifier fm modulator rf mixer video clamp white clip 16-sop-225 vccm audio in 1 23 45678 2 3 4 5 6 7 8 audio tank gnda p/s gndv reg video in in+ gndr rf out vccr out+ gndo out- in- 9 10 10 5 16 6 15 7 14 8 13 9 12 10 11 voltage regulator
uhf rf modulator KA2986D 3 mm-97-d013 98-05-12 preliminary specification(ver 2) pin i/o function equivalent circuit description 1 - vccm - vcc (5v, main except rf) 2 i audio in typical input = 1vp-p, maximum input = 5vp-p in the application circuit 3 i audio tank d/k( 6.5mhz) system 4 - gnda - ground (audio) 5 o p/s picture/sound carrier ratio adjust 6 - gndv - ground (video) 7 o reg regulator output=4.0v pin description 2 3 5 7 vcc
uhf rf modulator KA2986D 4 mm-97-d013 98-05-12 preliminary specification(ver 2) pin i/o function equivalent circuit description 8 i video in clamp level =2.66vdc input level =0.50vpp 9 i in+ rf oscillator input 1 10 o out+ rf oscillator output 1 11 - gndo ground (oscillator) 12 o out- rf oscillator output 2 13 i in- rf oscillator input 2 14 - gndr - ground ( rf ) 15 o rfo rf output (dc=3.78v) 16 - vccr - vcc (5v, rf) pin description 8 13 9 10 12 vcc vref rf+ rf- 15 vcc vref vcc absolute maximum ratings (ta=25 ? ? ) charateristics symbol value unit power supply vs 7 v operatin g temperature topr -20 ~ +70 ? stora g e temperature tst g -55 ~ +125 ? power dissipation pdmax 500 mw
uhf rf modulator KA2986D 5 mm-97-d013 98-05-12 preliminary specification(ver 2) electrical characteristics (vcc=5v, ta=25 ? , fp=591.25mhz 2 1mhz, fs=6.5mhz 2 100khz, unless otherwise specified.) characteristics symbol test condition min. typ. max. unit supply volta g e vcc audio/video no input 4.5 5.0 5.5 v supply current icc audio/video no input 17.5 23.5 29.5 ma video characteristics modulation depth mp input=0.95vp-p 100% white si g nal 76 82 88 % video si g nal to noise vs / n measured by s/n meter 50 -- -- db wei g ht off, mod 80% apl max.modulation depth mpmax input=1.15vp-p 100% white si g nal 86 -- 97 % sync crush level vv/s 0.95vp-p 100% white videosi g nal -- -- 10 % {1-(vsync/vwhite)*2.5}*100% amplitude frequency response vfr sin 0.95vp-p, 0.5mhz ~ 5mhz -2 0 +2 db reference : 1 mhz differential gain dg stair step apl 10~90% -5 -- + 5 % differential phase dp stair step apl 10~90% -5 -- + 5 de g audio characteristics max fm modulation depth msmax input=5vp-p, sin 1khz 350 -- 650 % 2nd hi g h harmonic level vs2 refer to note 1 46 50 -- db si g nal to noise ratio as/n input=1.0vp-p, sin 1khz 50 -- -- db 60% fm, video=stair step fm modulation depth ms input=1.0vp-p, sin 1khz 75 95 110 % ( 2 50 khz = 100%) fm distortion athd audio mod.depth=60%, sin 1khz -- 0.3 1.0 % amplitude frequency response afr audio=sin 1.0vp-p, 20hz ~ 10khz -2 - +2 db (reference = 1khz) output characteristics rf output level vo audio/video no input 78.5 81.0 83.5 dbuv picture/sound ratio p/s audio/video no input 10.0 12.5 15.0 db chroma beat vcb refer to note 2 61 -- -- db frequency drift as volta g e f vcc=4.5v ~ 5.5v 0 -- +200 khz 1. rf 2nd harmonic level (vo2) : 25db (min), 2. in band spurious (vis) : 53db (min), 58db (typ) note 3 : esd susceptibility is follows : hbm (human body model) : 2 2000v (test conditions : c=100pf, r=1.5 ? ) mm (machine model) : 2 200v (test conditions : c=200pf, r=0 ) cdm(char g ed device model) : 2 800v
uhf rf modulator KA2986D 6 mm-97-d013 98-05-12 preliminary specification(ver 2) * notes 1. audio 2nd high harmonic level vs2 level [db] frequency[mhz] fp+2fs fp+fs fp 2. chroma beat measure under the condition of the video input in which the frequency is 4.43mhz sinusoidal wave and the level is 20db lower than fp level. p/s level [db] frequency[mhz] fp +4.43 fp +2.07 fp ? ? ? 20 db vcb fp +6.5 ?
uhf rf modulator KA2986D 7 mm-97-d013 98-05-12 preliminary specification(ver 2) test & application circuit recommended part list part no value part no value part no value part no value part no value c1 4.7uf c8 4.7uf c15 12p r1 33k l 1 fixed c2 220p c9 0.68uf c16 5p r2 15k tank1 6.5mhz c3 100n c10 1p r3 270k *lc block c4 39p c11 1p r4 2 0k c5 1n c12 2p r5 510 c6 1p c13 2p r6 510 c7 100n c14 adjust r7 56 1 2 3 4 5 6 7 8 9 16 15 14 13 + + r1 r2 r3 c2 c1 c3 r4 r5 r6 c9 c5 c6 c4 c10 c11 c12 c13 c14 c15 c16 vcc KA2986D reg rf out gndr in- out- in+ gndo out+ p/s gnda vccm audio in audio tank gndv video in video in audio in 12 11 10 vccr r7 tank1 c7 c8 + lc block l1 rf out * chun -nil in korea
uhf rf modulator KA2986D 9 mm-97-d013 98-05-12 preliminary specification(ver 2) package dimensions dimensions in milimeters / inches (16-sop-225)
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