MITSUMI
2-Input 1-Output Video Switch (75鈩?driver)/3-Input 1-Output Video Switch (75鈩?driver) MM1221~1228
2-Input 1-Output Video Switch (75鈩?driver)/3-Input 1-Output Video Switch (75鈩?driver)
Monolithic IC MM1221~MM1228
Outline
These ICs are high grade video switches with 2-input 1-output or 3-input 1-output and built-in 75鈩?driver.
The series includes those with and without built-in clamp and 6dB amp circuits.
Circuit configuration tables and block diagrams are as follows.
MM1228 is used as the representative model in this description.
MM1221~MM1228 Series Circuit Configuration Table
Model name
MM1221
MM1222
MM1223
MM1224
MM1225
MM1226
MM1227
MM1228
# of Inputs
2
2
3
3
2
2
3
3
# of Outputs
1
1
1
1
1
1
1
1
6dB amp circuit
No
Yes
No
Yes
No
Yes
No
Yes
Clamp circuit
No
No
No
No
Yes
Yes
Yes
Yes
Power supply voltage range
8~13V
8~13V
8~13V
8~13V
4.7~13V
4.7~13V
4.7~13V
4.7~13V
MM1221~MM1228 Input/Output Voltage Measurement Values (typ.)
Model name
Power supply
voltage
Input voltage
Output voltage
Input voltage
Output voltage
Input voltage
Output voltage
Input voltage
Output voltage
Input voltage
Output voltage
Input voltage
Output voltage
Input voltage
Output voltage
Input voltage
Output voltage
1.27
1.31
1.3
1.4
1.27
1.31
1.3
1.4
5V
9V
4.53
4.5
4.05
5.34
4.53
4.5
4.05
5.34
2.17
2.25
2.2
2.23
2.17
2.25
2.2
2.23
12V
6.05
6.1
5.4
7.12
6.05
6.1
5.4
7.12
2.86
2.96
2.9
2.88
2.86
2.96
2.9
2.88
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
MM1221
MM1222
MM1223
MM1224
MM1225
MM1226
MM1227
MM1228