Video Switch · 75Ω driver · Y/C mix MM1501
MITSUMI
MM1511 ~ MM1512
· Switch Status
Switch status
Switch status
Item
Symbol
ICC
Item
Symbol
S1
2
S2
2
S1
3
S2
1
Consumption current
Voltage gain
Differential gain
Differential phase
Y output dynamic range
C output dynamic range
DG
DP
VDY
VDC
1
2
3
1
GV
2
1
2
1
1
2
3
1
Frequency characteristic
fc
2
1
· Measurement Procedures
Consumption current
Connect a DC ammeter to the VCC pin and measure. Hereafter,
short the ammeter to use.
ICC1
Input a 2.0V
voltage is V1 and TP2 voltage is V2, find G
P
-
P
(1.0V
P
-
P
for MM1512), 100kHz sine wave to SG1. If TP1
by the following formula:
Voltage gain
Frequency characteristic
Differential gain
GV
fc
V
GV = 20LOG (V2/V1) dB
In the above GV measurement, if TP2 voltage at 10MHz (7MHz for
MM1512) is V3, find fc by the following formula.
fc = 20LOG (V3/V2) dB
Input a 2.0VP
-P
(1.0V
P-P
for MM1512) to SG1, input a chroma signal
DG
to SG2, and measure differential gain at TP2.
APL = 10 ~ 90%
Differential phase
DP
The same as for DG, but measure differential phase.
Input a 100kHz sine wave to SG1. Measure VDY, the maximum
amplitude under THD 1%, at TP2.
Y output dynamic range
VDY
Input an APL 50% luminance signal to SG1 and input a chroma
signal to SG2. Change the chroma signal amplitude and measure
VDC, the maximum amplitude where there is no waveform
distortion at TP2.
C output dynamic range
VDC
MITSUMI [ MITSUMI ELECTRONICS, CORP. ]
