MITSUMI MM1226

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
November 2, 2001
Outline
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
# 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
MM1221~MM1228 Input/Output Voltage Measurement Values (typ.)
Model name
MM1221
MM1222
MM1223
MM1224
MM1225
MM1226
MM1227
MM1228
Power supply
9V
12V
Unit
Input voltage
4.53
6.05
V
Output voltage
4.5
6.1
V
Input voltage
4.05
5.4
V
Output voltage
5.34
7.12
V
Input voltage
4.53
6.05
V
Output voltage
4.5
6.1
V
Input voltage
4.05
5.4
V
Output voltage
5.34
7.12
V
voltage
5V
Input voltage
1.27
2.17
2.86
V
Output voltage
1.31
2.25
2.96
V
Input voltage
1.3
2.2
2.9
V
Output voltage
1.4
2.23
2.88
V
Input voltage
1.27
2.17
2.86
V
Output voltage
1.31
2.25
2.96
V
Input voltage
1.3
2.2
2.9
V
Output voltage
1.4
2.23
2.88
V
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
Control input truth table
OUT
IN1
IN2
SW
L
H
Control input truth table
SW1
L
H
L/H
SW2
L
L
H
OUT
IN1
IN2
Control input truth table
OUT
IN1
IN2
IN3
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
Control input truth table
SW
L
H
Control input truth table
OUT
IN1
IN2
SW
L
H
Control input truth table
SW1
L
H
L/H
SW2
L
L
H
OUT
IN1
IN2
Control input truth table
OUT
IN1
IN2
IN3
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
Introduction of Main Model
3-Input 1-Output Video Switch (with 75Ω driver, clamp and 6dB amp)
Monolithic IC MM1228
November 2, 2001
Outline
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
SW2
OUT
L
L
IN1
H
L
IN2
L/H
H
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.
Pin name
Function
1
IN1
Input
3
IN2
5
IN3
2
SW1
4
SW2
7
OUT
Output
6
VCC
Power supply
8
GND
Ground
Switch
Internal equivalent circuit diagram
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
(Ta=25°C)
Item
Symbol
Ratings
Units
Storage temperature
TSTG
-40~+125
°C
Operating temperature
TOPR
-20~+75
°C
Power supply voltage
VCC
15
V
Allowable loss
Pd
300
mW
Electrical Characteristics
(Except where noted otherwise, Ta=25°C, VCC=5.0V)
Item
Symbol
Measurement conditions
Operating power supply voltage range
VCC
Consumption current
Id
Refer to Measuring Circuit
Voltage gain
GV
Refer to Measuring Circuit
Frequency characteristic
FC
Refer to Measuring Circuit
Differential gain
DG
Differential phase
Min. Typ. Max. Units
4.7
13.0
V
8.4
10.9
mA
+5.5
+6.0
+6.5
dB
-1
0
+1
dB
Refer to Measuring Circuit
0
±3
%
DP
Refer to Measuring Circuit
0
±3
deg
Output offset voltage
Voff
Refer to Measuring Circuit
±30
mV
Crosstalk
CT
Refer to Measuring Circuit
-54
dB
SW1 input voltage H
VIH1
Refer to Measuring Circuit
SW1 input voltage L
VIL1
Refer to Measuring Circuit
SW2 input voltage H
VIH2
Refer to Measuring Circuit
SW2 input voltage L
VIL2
Refer to Measuring Circuit
-64
2.1
V
0.7
2.1
V
V
0.7
V
MITSUMI
2-Input 1-Output Video Switch (W/75Ω driver)/3-Input 1-Output Video Switch (W/75Ω driver) MM1221~1228
Measuring Procedures
Item
Symbol
Consumption
current
Id
Voltage gain
Gv
Frequency
characteristic
FC
Differential gain
DG
Differential phase
DP
Output offset
voltage
Voff
Crosstalk
CT
Switch 1 input
voltage H
VIH1
Switch 1 input
voltage L
VIL1
Switch 2 input
voltage H
VIH2
Switch 2 input
voltage L
VIL2
(VCC=5.0V, VC1=VCC, VC2=0V)
Switch state
S1 S2 S3 S4
2
2
2
2
S5
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
2
2
1
1
1
2
2
2
2
2
1
1
2
2
1
1
2
2
1
1
2
2
1
1
2
2
2
2
2
2
2
2
2
1
1
2
2
1
1
2
2
1
1
2
2
1
1
2
2
1
1
2
2
1
1
1
2
1
2
2
1
2
1
1
2
2
1
1
2
2
1
1
2
2
1
1
2
2
1
1
2
2
1
2
1
1
2
1
1
2
2
2
2
2
2
2
1
Measuring Procedure
Connect a DC ammeter to the VCC pin and measure. The
ammeter is shorted for use in subsequent measurements.
Input a 1.0VP-P, 100kHz sine wave to SG, and obtain GV
from the following formula given TP1 voltage as V1
and TP3 voltage as V2.
GV=20LOG (V2/V1) dB
For the above GV measurement, given TP3 voltage for
7MHz as V3, FC is obtained from the following formula.
FC=20LOG (V3/V2) dB
Input a 1.0VP-P staircase wave to SG, and measure
differential gain at TP4.
APL=10~90%
Proceed as for DG, and measure differential phase.
Measure the DC voltage difference of each switch
status at TP2.
Assume VC1=2.1V, VC2=0.7V.
Input a 1.0VP-P, 4.43MHz sine wave to SG, and given
TP1 voltage as V4 and TP3 voltage as V5, CT is
obtained from the following formula.
CT=20LOG (V5/V4) dB
Impress an optional DC voltage on TP7 and TP8.
Gradually raise from VC1=0V. TP5 voltage when TP8
voltage is output on TP2 is VIH1. Gradually lower from
VC1=VCC. TP5 voltage when TP7 voltage is output on
TP2 is VIL1.
Impress an optional DC voltage on TP7 and TP9.
Gradually raise from VC1=0V. TP5 voltage when TP9
voltage is output on TP2 is VIH2. Gradually lower from
VC1=VCC. TP6 voltage when TP7 voltage is output on
TP2 is VIL2.