Video Switch · 75Ω driver · Y/C mix MM1501
MITSUMI
· Measurement Procedures (MM1505 ~ MM1508)
Connect a DC ammeter to VCC pin and measure. Hereafter, short
the ammeter to use.
Consumption current
ICC
Input a 2.0VP
-
P(1.0VP P for MM1506 and MM1508), 100kHz sine
-
wave to SG1. If TP1 voltage is V1 and TP3 voltage is V2, find GV
using the following formula:
Voltage gain
GV
GV = 20LOG (V2/V1) dB
In the above GV measurement, if TP3 voltage at 7MHz is V3, find fc
Frequency characteristic
Differential gain
fc
as follows:
Input a 2.0VP
fc = 20LOG (V3/V2) dB
P for MM1506 and MM1508) staircase to SG1
-
P (1.0VP
-
DG
and measure differential gain at TP3.
APL = 10 ~ 90%
Differential phase
Output dynamic range
Output offset voltage
DP
VD
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
Measure the DC voltage difference of each switch status at TP2.
VC1 = 2.1V and VC2 = 0.7V. Input a 2.0VP P, 4.43MHz sine wave to
D
, the maximum amplitude under THD 1%, at TP3.
VOFF
-
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 CT by the following formula:
CT = 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 VIH. Gradually lower from VC1 = VCC, and when TP6
voltage is output on TP2, TP5 voltage is VIL.
Cross talk
CT
VI
SW input voltage
MM1509 ~ MM1510
· Switch Status
Switch status
Switch status
Item
Symbol
Item
Symbol
S1
2
2
S2
1
3
S1
1
S2
1
Consumption current
Consumption current for PS
PS input voltage L
PS input voltage H
Voltage gain
ICC1
ICC2
VIL
VIH
GV
Frequency characteristic
Differential gain
Differential phase
Output dynamic range
fc
DG
DP
VD
1
1
1
1
2
1
2
1
1
1
· Measurement Procedures
Consumption current
Consumption current for PS
ICC1
ICC2
Connect a DC ammeter to the VCC pin and measure.
Connect a DC ammeter to the VCC pin and measure.
Connect a DC ammeter to the VCC pin. Gradually lower from VC1 =
VCC. VC1 voltage when consumption current is reduced from ICC1 to
110% of ICC2 is VIL. Gradually raise from VC1 = 0V. VC1 voltage
when consumption current increases from ICC2 to 90% of ICC1 is VIH.
From here on, short the ammeter when using it.
PS input voltage
VI
Input a 1.0VP P, 100kHz sine wave to SG1. If TP1 voltage is V1 and
-
Voltage gain
GV
fc
TP2 voltage is V2, find GV by the following formula:
GV = 20LOG (V2/V1) dB
In the above GV measurement, if TP2 voltage at 7MHz is V3, find fc
by the following formula.
Frequency characteristic
fc = 20LOG (V3/V2) dB
Input a 1.0VP
TP2.
-
P staircase to SG1 and measure differential gain at
Differential gain
Differential phase
DG
DP
VD
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.
Output dynamic range
MITSUMI [ MITSUMI ELECTRONICS, CORP. ]
