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MITSUMI
Video Switch · 75
driver · Y/C mix MM1501
· Measurement Procedures (MM1505 ~ MM1508)
Consumption current
I
CC
Connect a DC ammeter to V
CC
pin and measure. Hereafter, short
the ammeter to use.
Input a 2.0V
P
-
P
(1.0V
P
-
P
for MM1506 and MM1508), 100kHz sine
wave to SG1. If TP1 voltage is V1 and TP3 voltage is V2, find G
V
using the following formula:
G
V
= 20LOG (V2/V1) dB
In the above GV measurement, if TP3 voltage at 7MHz is V3, find fc
as follows:
fc = 20LOG (V3/V2) dB
Input a 2.0V
P
-
P
(1.0V
P
-
P
for MM1506 and MM1508) staircase to SG1
and measure differential gain at TP3.
APL = 10 ~ 90%
The same as for DG, but measure differential phase.
Input a 100kHz sine wave to SG1. Change the amplitude of the sine
wave, and measure V
D
, the maximum amplitude under THD 1%, at TP3.
Measure the DC voltage difference of each switch status at TP2.
VC1 = 2.1V and VC2 = 0.7V. Input a 2.0V
P
-
P
SG1, and operate SW3. IF TP3 voltage when there is an output
signal on the OUT pin is V4, and when there is no signal TP3
voltage is V5, then find C
T
by the following formula:
C
T
= 20LOG (V5/V4) dB
Impress an optional DC voltage on TP6 and TP7. Gradually
increase from VC1 = 0V. When TP7 voltage is output on TP2, TP5
voltage is V
IH
. Gradually lower from VC1 = V
CC
, and when TP6
voltage is output on TP2, TP5 voltage is V
IL
.
Voltage gain
G
V
Frequency characteristic
fc
Differential gain
DG
Differential phase
DP
Output dynamic range
V
D
Output offset voltage
V
OFF
SW input voltage
V
I
Cross talk
C
T
MM1509 ~ MM1510
· Switch Status
Item
Symbol
Switch status
S1
2
2
S2
1
3
Consumption current
Consumption current for PS
PS input voltage L
PS input voltage H
Voltage gain
I
CC1
I
CC2
V
IL
V
IH
G
V
2
2
1
1
Item
Symbol
Switch status
S1
1
1
1
1
S2
1
1
1
1
Frequency characteristic
Differential gain
Differential phase
Output dynamic range
fc
DG
DP
V
D
· Measurement Procedures
Consumption current
Consumption current for PS
I
CC1
I
CC2
Connect a DC ammeter to the V
CC
pin and measure.
Connect a DC ammeter to the V
CC
pin and measure.
Connect a DC ammeter to the V
CC
pin. Gradually lower from VC1 =
V
CC
. VC1 voltage when consumption current is reduced from I
CC1
to
110% of I
CC2
is V
IL
. Gradually raise from VC1 = 0V. VC1 voltage
when consumption current increases from I
CC2
to 90% of I
CC1
is V
IH
.
From here on, short the ammeter when using it.
Input a 1.0V
P
-
P
, 100kHz sine wave to SG1. If TP1 voltage is V1 and
TP2 voltage is V2, find G
V
by the following formula:
G
V
= 20LOG (V2/V1) dB
In the above G
V
measurement, if TP2 voltage at 7MHz is V3, find fc
by the following formula.
fc = 20LOG (V3/V2) dB
Input a 1.0V
P
-
P
staircase to SG1 and measure differential gain at
TP2.
APL = 10 ~ 90%
The same as for DG, but measure differential phase.
Input a 100kHz sine wave to SG1. Measure DR, the maximum
amplitude under THD 1%, at TP2.
Voltage gain
G
V
Frequency characteristic
fc
Differential gain
DG
Differential phase
DP
Output dynamic range
V
D
PS input voltage
V
I