Index DW9916S, Руководство по обслуживанию

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MITSUMI
2-Input 1-Output Video Switch (75
Ω
driver)/3-Input 1-Output Video Switch (75
Ω
driver) MM1221~1228
2-Input 1-Output Video Switch (75
Ω
driver)/3-Input 1-Output Video Switch (75
Ω
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
Ω
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
MM1221~MM1228 Input/Output Voltage Measurement Values (typ.)
Model name # of Inputs # of Outputs 6dB amp circuit Clamp circuit Power supply voltage range
MM1221
2 1 No No 8~13V
MM1222
2 1 Yes No 8~13V
MM1223
3 1 No No 8~13V
MM1224
3 1 Yes No 8~13V
MM1225
2 1 No Yes 4.7~13V
MM1226
2 1 Yes Yes 4.7~13V
MM1227
3 1 No Yes 4.7~13V
MM1228
3 1 Yes Yes 4.7~13V
Model name
Power supply
5V 9V 12V Unit
voltage
MM1221
Input voltage 4.53 6.05 V
Output voltage 4.5 6.1 V
MM1222
Input voltage 4.05 5.4 V
Output voltage 5.34 7.12 V
MM1223
Input voltage 4.53 6.05 V
Output voltage 4.5 6.1 V
MM1224
Input voltage 4.05 5.4 V
Output voltage 5.34 7.12 V
MM1225
Input voltage 1.27 2.17 2.86 V
Output voltage 1.31 2.25 2.96 V
MM1226
Input voltage 1.3 2.2 2.9 V
Output voltage 1.4 2.23 2.88 V
MM1227
Input voltage 1.27 2.17 2.86 V
Output voltage 1.31 2.25 2.96 V
MM1228
Input voltage 1.3 2.2 2.9 V
Output voltage 1.4 2.23 2.88 V
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