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MM1223 Datasheet(PDF) 7 Page - Mitsumi Electronics, Corp. |
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MM1223 Datasheet(HTML) 7 Page - Mitsumi Electronics, Corp. |
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7 / 7 page  MITSUMI 2-Input 1-Output Video Switch (W/75 Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228 Measuring Procedures (VCC=5.0V, VC1=VCC, VC2=0V) Item Symbol Switch state Measuring Procedure S1 S2 S3 S4 S5 Consumption Id 22222 current 12222 Voltage gain Gv 21212 22111 22121 12222 Frequency FC 21212 characteristic 22111 22121 12222 Differential gain DG 21212 22111 22121 12222 Differential phase DP 21212 22111 22121 22222 Output offset Voff 22212 voltage 22211 12212 12221 12211 Crosstalk CT 21222 21221 21211 22122 22112 22212 Switch 1 input VIH1 voltage H Switch 1 input VIL1 voltage L 22221 Switch 2 input VIH2 voltage H Switch 2 input VIL2 voltage L Connect a DC ammeter to the VCC pin and measure. The ammeter is shorted for use in subsequent measurements. Input a 1.0VP-P, 100kHz sine wave to SG, and obtain GV from the following formula given TP1 voltage as V1 and TP3 voltage as V2. GV=20LOG (V2/V1) dB For the above GV measurement, given TP3 voltage for 7MHz as V3, FC is obtained from the following formula. FC=20LOG (V3/V2) dB Input a 1.0VP-P staircase wave to SG, and measure differential gain at TP4. APL=10~90% Proceed as for DG, and measure differential phase. Measure the DC voltage difference of each switch status at TP2. Assume VC1=2.1V, VC2=0.7V. Input a 1.0VP-P, 4.43MHz sine wave to SG, and given TP1 voltage as V4 and TP3 voltage as V5, CT is obtained from the following formula. CT=20LOG (V5/V4) dB Impress an optional DC voltage on TP7 and TP8. Gradually raise from VC1=0V. TP5 voltage when TP8 voltage is output on TP2 is VIH1. Gradually lower from VC1=VCC. TP5 voltage when TP7 voltage is output on TP2 is VIL1. Impress an optional DC voltage on TP7 and TP9. Gradually raise from VC1=0V. TP5 voltage when TP9 voltage is output on TP2 is VIH2. Gradually lower from VC1=VCC. TP6 voltage when TP7 voltage is output on TP2 is VIL2. |
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