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| KA2192 4 IN PUT A/V SWITCH The KA2192 is audio/video 4 input switching IC in the video system for S-VHS(Super-Video Home System). This device can select audio/video signal of each different 4 kinds input. This device separates Y(luminance) and C(chroma) for S-VHS. 4 INPUT A/V SWITCH 30-SDlP-400 FUNCTION * Two input decoder * Mode selector * 4 * 1 switch * Mute switch * Bias stage * Gain switch (6dB or 8dB) * Clamp circuit * TV polarity switch * 2 * 1 switch * Pulse generator * Switching part for selecting channel ORDERING INFORMATION Device KA2192 Package Operating Temperature 30-SDIP-400 -20~+65C FEATURE * Indepandent and stable bias block to prohibit cross talk of and source. * Available the mode output. * TV polarity switch can select negative and positive video signal to switch conditions. * Clamp block for stabile video signal. * Switch for to control signal gain (6dB or 8dB). * Separation and Processing of Y(luminance) and C(chroma) for S-VHS video. KA2192 BLOCK DIAGRAM 4 INPUT A/V SWITCH L TV R TV TV-IN Ls-IN Rs-IN Sy-IN TV Polarity Sc-IN L1 1 2 3 4 5 6 7 6dB Inv 4x1 switch 6dB or 8dB 30 29 28 27 Vout Vcc Vcc GAIN S/W CLAMP 3 abc 26 C-IN 25 24 AV=1 CLAMP Y-OUT MODE-UP L-OUT R-OUT C-OUT GND Y-OUT MUTE SW2 + 6dB MODE SELECT 8 SWICH 9 4 4 AV=1 23 22 21 20 19 pulse gen 18 AV=1 mute s/w abcd Decoder 2 X 4 17 16 R1 10 EXT1 11 L2 R2 12 13 2x1 switch 4 EXT2 14 SW1 15 KA2192 4 INPUT A/V SWITCH Characteristic Supply Voltage Input Terminal Signal Voltage Input Terminal Voltage Power Dissipation Operating Temperature Storage Temperature Symbol VCCmax VSmax VINmax PDmax TOPR TSTG Value 15 3 GND-0.3~VCC+0.3V 1.6 -20~+70 -55~+150 Unit V Vp-p W C C ABSOLUTE MAXIMUM RATINGS (TA=25C) ELECTRICAL CHARACTERISTICS Characteristic Total Current Input Dynamic Range Video Gain Symbol ICC VDY Y VDYC S VDY GV GV GYC S GDY CM CYC Test Conditions VCC=9V 15KHz Sine Wave 15 KHz 1VP-P Sine Wave 4.45 KHz 1Vp-p Sine Wave Min 21 1.7 5.5 1.9 5.6 0.5 -0.2 5.0 50 50 Typ 32 2.2 6.5 2.4 6.0 2.0 0 6.0 64 64 Max 43 7.0 2.5 0.5 7.0 Unit mA VP-P dB Video Crosstalk Y and C Crosstalk KA2192 4 INPUT A/V SWITCH Characteristic Frequency Width Clamp Level Sound Dynamic Range Sound Gain Sound Frequency Characteristics Source Crosstalk Source and Channel Crosstalk Sound Mute Atenuation SW 1 Threshold VTG SW 2 Threshold VTG Sound Mute Treshold VTG TV Polarity s/w Threshold Mode Output Voltage Symbol fM f YC f YC CL VDY GA fA CA CLR MA VTH1 VTH2 VTHM VTHP VM VM VM Test Conditions 1VP-P Sine Wave PAL TV Signal 1 KHz 1VP-P Sine Wave 1VP-P Sine Wave 1 KHz 1VP-P Sine Wave Min 10 10 10 5 -0.5 100 60 60 60 1.0 1.0 1.3 1.7 3.7 Typ 24 39 24 21 6 0 72 72 75 2.0 2.0 2.3 4.0 0 2.0 4.0 Max 50 0.5 3.0 3.0 3.3 0.2 2.3 4.5 Unit MHz % VP-P dB KHz dB dB V V ELECTRICAL CHARACTERISTICS(Contiued) S A TV E S KA2192 OPERATING PRINCIPLE 4 INPUT A/V SWITCH AIn-output truth table of A/V switching IC for input switch conditions. SW INPUT SW1 L H H L L:0(V) H:5(V) SW2 L L H H DECODER OUT A H L L L B L H L L C L L H L D L L L H WOUND OUT L-OUT EXT2 EXT1 TV SUPER R-OUT EXT2 EXT1 TV SUPER VIDEO OUT V-OUT EXT2 EXT1 TV SUPER TV POLARITY SW=H AV= -1 GAIN SW =H: 8dB Y & C OUT Y OUT S-Y IF SW1(L) SW2(H) S-Y &S-C OUT C OUT S-C CODE OUT MODE OUT 2(V) 2(V) 0(V) 4(V) FROM EXT1,2: 2[V] TV:0[V] S-VHS: 4[V] L:0.8(V) H:2.1(V) SOUND MUTE S/W =HIGH[5] :SOUND OFF ASound mute switch MUTEIN H [5V] L [0V] SOUND-OUT L-OUT R-OUT OFF OFF ON ON AGain switch GAIN SWITCH H [5V] L [0V] 6dB OR 8 dB 8dB 6dB ATV polarity switch TV AV POLARITY SWITCH AV= -1 H [VCC] AV=1 L [GND] KA2192 TEST CIRCUIT 4 INPUT A/V SWITCH Vcc 0.01F sw1 sw2 sw3 2 3 R TV Vcc 29 Vcc 28 sw27 27 sw26 TV-IN Ls-IN Rs-IN Sy-IN sw4 sw5 sw6 4 5 GAIN S/W C-IN 26 CLAMP 25 sw24 Y-OUT 24 Vs 10F sw7 7 sw8 8 sw9 9 10 11 12 Sc-IN MODE-UP 23 L-OUT 22 TV Polarity + 3.3F sw17 sw16 V1 6 + 47F 1 L TV Vout 30 L1 R1 sw10 sw11 R-OUT 21 C-OUT 20 GND 19 Y-OUT 18 MUTE 17 SW2 16 EXT1 L2 sw12 sw13 13 sw14 14 sw15 15 R2 EXT2 SW1 + |
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