MM1188 查看數據表（PDF） - Mitsumi

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MM1188

3-input 1-output video switch (with Y-C mix)

Mitsumi 

MITSUMI

3-Input 1-Output Video Switch (with Y-C mix) MM1188

Measuring Procedures (Except where noted otherwise, VCC=12.0V, VC1=VCC, VC2=0V)

Item

Symbol S1

Switch state

S2 S3 S4 S5

S6

Measuring Procedure

Consumption

current

Id

2

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 2 Input a 1.0VP-P, 100kHz sine wave to SG, and

2 1 2 2 2 2 obtain Gv from the following formula given TP1

Voltage gain GV 2 2 1 2 1 2 voltage as V1 and TP3 voltage as V2.

222111

222121

GV=20LOG (V2/V1) dB

1 2 2 2 2 2 For the above GV measurement, given TP3

Frequency

characteristic

FC

2

2

2

1

2

2

2

1

2

2

2

1

2

1

1

2 voltage for 10MHz as V3, FC is obtained from the

2 following formula.

1

222121

FC=20LOG (V3/V2) dB

2 1 2 2 2 2 Input a 1.0VP-P staircase wave to SG, and

Differential gain DG

2

2

2

2

1

2

2

1

1

1

* 2 measure differential gain at TP3. 1

1

222121

APL=10~90%

212222

Differential phase DP

2

2

2

2

2

2

1

2

2

2

1

1

1

1

2

2 Proceed as for DG, and measure differential

* 1 phase. 2

1

Output offset

voltage

2

Voff 2

2

2

2

2

2

2

2

2

2

2

2

1

1

2

2

1

Measure the DC voltage difference of each

switch status at TP2.

122212

122221

1 2 2 2 1 1 Assume VC1=2.3V, VC2=0.9V.

2 1 2 2 1 2 Input a 1.0VP-P, 4.43MHz sine wave to SG, and

2 1 2 2 2 1 given TP3 voltage during signal output as V4,

Crosstalk

CT 2 1 2 2 1 1 switch S5 and S6, and given TP3 voltage for

2 2 1 2 2 2 output OFF as V5, CT is obtained from the

2 2 1 2 2 1 following formula.

221211

222122

CT=20LOG (V5/V4) dB

222112

Switch 1 input

voltage H

VIH1

2

2

2

2

1

2 Impress an optional DC voltage on TP7 and TP8.

Gradually raise from VC1=0V. TP4 voltage when

TP8 voltage is output on TP2 is VIH1. Gradually

Switch 1 input

voltage L

VIL1

lower from VC1=VCC. TP4 voltage when TP7

voltage is output on TP2 is VIL1.

Switch 2 input

voltage H

VIH2

2

2

2

2

2

1 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

Switch 2 input

voltage L

VIL2

lower from VC1=VCC. TP5 voltage when TP7

voltage is output on TP2 is VIL2.

3 1 2 2 2 2 Input a luminance signal as shown in Figure 1 to

SG1, and a chroma signal as shown in Figure 2

A DRA

to SG2. Change the chroma signal amplitude and

measure the maximum amplitude where there is

IN1-C input

no waveform distortion at TP3 and convert to

dynamic

input amplitude.

range

3 1 2 2 2 2 Input a luminance signal as shown in Figure 3 to SG1,

and a chroma signal as shown in Figure 2 to SG2.

B DRB

Change the chroma signal amplitude and measure the

maximum amplitude where there is no waveform

distortion at TP3 and convert to input amplitude.

IN1-Y, IN2, IN3

2 1 2 2 2 2 Input a sine wave to SG1. Measure the maximum

input dynamic DRC 2 2 1 2 1 2 amplitude where there is no waveform distortion

range

2 2 2 1 1 1 at TP3 and convert to input amplitude.

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