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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~+65°C
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=25°C) 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
À In-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).