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MITSUMI
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver)
Monolithic IC MM1221~MM1228
Outline
November 2, 2001
These ICs are high-end video switch ICs with 2-input 1-output or 3-input 1-output including a 75Ω driver. The series includes those with and without a built-in clamp circuit and a 6dB amp. The circuit configuration table and block diagram are shown below. MM1228 is introduced as a representative model in this document.
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
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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
MITSUMI
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
Block Diagram
(MM1221~MM1228)
Control input truth table SW L H OUT IN1 IN2
Control input truth table SW L H OUT IN1 IN2
Control input truth table SW1 L H L/H SW2 L L H OUT IN1 IN2 IN3 SW1 L H L/H
Control input truth table SW2 L L H OUT IN1 IN2 IN3
MITSUMI
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
Control input truth table SW L H OUT IN1 IN2
Control input truth table SW L H OUT IN1 IN2
Control input truth table SW1 L H L/H SW2 L L H OUT IN1 IN2 IN3 SW1 L H L/H
Control input truth table SW2 L L H OUT IN1 IN2 IN3
MITSUMI
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
Introduction of Main Model
3-Input 1-Output Video Switch (with 75Ω driver, clamp and 6dB amp)
Monolithic IC MM1228
Outline
November 2, 2001
This is a high performance 3-input 1-output video switch IC with 6dB amp, clamp and 75Ω driver circuits. 1VP-P video signals can be output externally with 75Ω output.
Features
1. 2. 3. 4. 5. 6. 7. 8. 9. Built-in 75Ω driver circuit Built-in 6dB amp Built-in clamp circuit Models in the MM1221~MM1228 series without a clamp circuit can support audio or chroma circuits Mute operation possible Wide operating supply voltage range 4.7~13V Low current consumption Wideband frequency response 7MHz at 0dB Crosstalk -64dB (4.43MHz)
Packages
SOP-8C (MM1228XF)
Applications
1. 2. 3. 4. TV VCR Video cameras Other video equipment
Block Diagram
Control input truth table SW1 L H L/H SW2 L L H OUT IN1 IN2 IN3
MITSUMI
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
Pin Description
Pin no. 1 3 5 Pin name IN1 IN2 IN3 Function Input Internal equivalent circuit diagram
2 4
SW1 SW2
Switch
7
OUT
Output
6 8
VCC GND
Power supply Ground
MITSUMI
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
Measuring Circuit
Absolute Maximum Ratings
Item Storage temperature Operating temperature Power supply voltage Allowable loss
(Ta=25°C) Symbol TSTG TOPR VCC Pd Ratings -40~+125 -20~+75 15 300 Units °C °C V mW
Electrical Characteristics
Item
(Except where noted otherwise, Ta=25°C, VCC=5.0V) Symbol VCC Id GV FC DG DP Voff CT VIH1 VIL1 VIH2 VIL2 Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit Refer to Measuring Circuit 2.1 0.7 2.1 0.7 -64 +5.5 -1 Measurement conditions Min. Typ. Max. Units 4.7 8.4 +6.0 0 0 0 13.0 10.9 +6.5 +1 ±3 ±3 ±30 -54 V mA dB dB % deg mV dB V V V V
Operating power supply voltage range Consumption current Voltage gain Frequency characteristic Differential gain Differential phase Output offset voltage Crosstalk SW1 input voltage H SW1 input voltage L SW2 input voltage H SW2 input voltage L
MITSUMI
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
Measuring Procedures
Item Consumption current Symbol Id
(VCC=5.0V, VC1=VCC, VC2=0V)
Switch state S1 S2 S3 S4 2 2 2 2 1 2 2 2 1 2 2 2 1 2 2 2 1 2 2 2 2 2 2 1 1 1 2 2 2 2 2 2 2 1 2 2 2 1 2 2 2 1 2 2 2 1 2 2 2 2 2 2.