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