MITSUMI
Video Switch · 75Ω driver · Y/C mix MM1501
MM1511 ~ MM1512
· Switch Status
Item
Consumption current
Voltage gain
Frequency characteristic
Symbol
I
CC
G
V
fc
Switch status
S1
S2
2
2
1
2
2
1
1
2
2
1
Item
Differential gain
Differential phase
Y output dynamic range
C output dynamic range
Symbol
DG
DP
V
DY
V
DC
Switch status
S1
S2
3
1
3
1
2
1
3
1
· Measurement Procedures
Consumption current
Voltage gain
I
CC1
G
V
Connect a DC ammeter to the V
CC
pin and measure. Hereafter,
short the ammeter to use.
Input a 2.0V
P-P
(1.0V
P-P
for MM1512), 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 10MHz (7MHz for
MM1512) is V3, find fc by the following formula.
fc = 20LOG (V3/V2) dB
Input a 2.0V
P-P
(1.0V
P-P
for MM1512) to SG1, input a chroma signal
to SG2, 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 V
DY
, the maximum
amplitude under THD 1%, at TP2.
Input an APL 50% luminance signal to SG1 and input a chroma
signal to SG2. Change the chroma signal amplitude and measure
V
DC
, the maximum amplitude where there is no waveform
distortion at TP2.
Frequency characteristic
fc
Differential gain
Differential phase
Y output dynamic range
DG
DP
V
DY
C output dynamic range
V
DC
MITSUMI [ MITSUMI ELECTRONICS, CORP. ]
