Mitsumi MM1234 2-input 1-output 3-circuit video switch monolithic ic Datasheet

2-Input 1-Output 3-Circuit Video Switch MM1231~1234
MITSUMI
2-Input 1-Output 3-Circuit Video Switch
Monolithic IC MM1231~1234
Outline
This is serial 2-input, 1-output, 3-circuit video switch IC for video / audio signal switching with and without
clamp circuit.
Circuit configuration tables and block diagrams are as follows.
MM1234 is used as the representative model in this description.
MM1231~MM1234 Series Circuit Configuration Table
Model name
# of Inputs
# of Outputs
Clamp circuit
Power supply voltage
MM1231
2
1
No
4.6~13.0V
MM1232
2
1
1 input
4.6~13.0V
MM1233
2
1
2 input
4.6~13.0V
MM1234
2
1
3 input
4.6~13.0V
MM1231~MM1234 Input/Output Voltage Measurement Values (typ.)
Model name
MM1231
MM1232
MM1233
MM1234
Power supply voltage
Input / Output
voltage
5V
9V
12V
Input voltage
2.80
5.00
6.70
V
Output voltage
2.01
4.30
6.00
V
Input voltage
2.80
5.00
6.70
V
Output voltage
2.10
4.30
6.00
V
Input clamp
1.40
2.50
3.30
V
Output voltage
0.70
2.20
2.90
V
Input voltage
2.80
5.00
6.70
V
Output voltage
2.10
4.30
6.00
V
Input clamp
1.40
2.50
3.30
V
Output voltage
0.70
2.20
2.90
V
Input clamp
1.40
2.50
3.30
V
Output voltage
0.70
2.20
2.90
V
Unit
2-Input 1-Output 3-Circuit Video Switch MM1231~1234
MITSUMI
Block Diagram
(MM1231~MM1234)
MM1231
MM1232
MM1233
MM1234
Control input truth table
SW
OUT
IN1A
L
IN2A
IN3A
IN1B
H
IN2B
IN3B
MITSUMI
2-Input 1-Output 3-Circuit Video Switch MM1231~1234
Introduction of Main Model
2-Input 1-Output 3-Circuit Video Switch
Monolithic IC MM1234
Outline
This is a video switch for video signal switching, with 2-input and 1-output circuits built in. All three circuits
have a clamp function.
Features
1.
2.
3.
4.
5.
6.
3 circuits built in, 2-input and 1-output
Clamp function
Current consumption
Operating power supply voltage range
Frequency response
Crosstalk
Package
SOP-16B
DIP-16B
Applications
1. TV
2. VCR
3. Other video equipment
9.0mA typ.
4.6~13.0V
10MHz
70dB (at 4.43MHZ)
2-Input 1-Output 3-Circuit Video Switch MM1231~1234
MITSUMI
Pin Description
Pin no.
Pin name
Function
16
IN1A
Input
1
IN1B
11
IN2A
14
IN2B
8
IN3A
9
IN3B
2
SW1
12
SW2
7
SW3
3
OUT1
5
OUT2
6
OUT3
13
VCC
Power supply
15
GND1
Ground
4
GND2
10
GND3
Switch
Output
Internal equivalent circuit diagram
2-Input 1-Output 3-Circuit Video Switch MM1231~1234
MITSUMI
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
Electrical Characteristics
350 (SOP-16B)
1200 (DIP-16B)
mW
(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
4.6
13.0
V
9.0
11.7
mA
-0.5
0
+0.5
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
±15
mV
Crosstalk
CT
Refer to Measuring Circuit
-60
dB
Switch input voltage H
VIH
Refer to Measuring Circuit
Switch input voltage L
VIL
Refer to Measuring Circuit
Output impedance
Ro
-70
2.1
V
0.7
25
V
Ω
2-Input 1-Output 3-Circuit Video Switch MM1231~1234
MITSUMI
Measuring Procedures
(Except where noted otherwise, VCC=5.0V, VC1=VCC, VC2=0V)
Switch state
Measuring Procedure
S1 S2 S3 S4 S5 S6 S7 S8
Consumption
2
2
2
2
2
2
2
1 Connect a DC ammeter to the VCC pin and measure. The
Id
ammeter is shorted for use in subsequent measurements.
current
1
2
2
2
2
2
2
1
Input a 2.0VP-P, 100kHz sine wave to SG, and
2
1
2
2
2
2
1
1
obtain Gv from the following formula given TP1
2
2
1
2
2
2
2
2
voltage as V1 and TP3 voltage as V2.
Voltage gain
GV
2
2
2
1
2
2
1
2
2
2
2
2
1
2
2
3
GV=20LOG (V2/V1) dB
2
2
2
2
2
1
1
3
1
2
2
2
2
2
2
1
For the above GV measurement, given TP3
2
1
2
2
2
2
1
1
voltage for 10MHz as V3, FC is obtained from
Frequency
2
2
1
2
2
2
2
2
the
following formula.
Fc
characteristic
2
2
2
1
2
2
1
2
2
2
2
2
1
2
2
3
FC=20LOG (V3/V2) dB
2
2
2
2
2
1
1
3
1
2
2
2
2
2
2
1
2
1
2
2
2
2
1
1 Input a 2.0VP-P staircase wave to SG, and
2
2
1
2
2
2
2
2 measure differential gain at TP3.
Differential gain DG
2
2
2
1
2
2
1
2
APL=10~90%
2
2
2
2
1
2
2
3
2
2
2
2
2
1
1
3
1
2
2
2
2
2
2
1
2
1
2
2
2
2
1
1
2
2
1
2
2
2
2
2 Proceed as for DG, and measure differential
Differential phase DP
2
2
2
1
2
2
1
2 phase.
2
2
2
2
1
2
2
3
2
2
2
2
2
1
1
3
2
2
2
2
2
2
2
1
2
2
2
2
2
2
1
1
Output offset
2
2
2
2
2
2
2
2 Measure the DC voltage difference at TP2 for
Voff
voltage
2
2
2
2
2
2
1
2 each switch for VC1 and VC2.
2
2
2
2
2
2
2
3
2
2
2
2
2
2
1
3
1
2
2
2
2
2
1
1 Assume VC1=2.1V, VC2=0.7V. Input a 2.0VP-P,
2
1
2
2
2
2
2
1 4.43MHz sine wave to SG, and given TP1
2
2
1
2
2
2
1
2 voltage as V4 and TP3 voltage as V5, CT is
Crosstalk
CT
2
2
2
1
2
2
2
2 obtained from the following formula.
2
2
2
2
1
2
1
3
CT=20LOG (V5/V4) dB
2
2
2
2
2
1
2
3
2
2
2
2
2
2
1
1 Impress an optional DC voltage on TP5 7, 9 and
Switch input
VIH 2
2
2
2
2
2
1
2 TP6, 8 and 10. Gradually raise from VC1=0V.
voltage H
2
2
2
2
2
2
1
3 TP4 voltage when TP6, 8, 10 voltage is output
2
2
2
2
2
2
1
1 on TP2 is VIH. Gradually lower from VC1=VCC.
Switch input
VIL
2
2
2
2
2
2
1
2 TP4 voltage when TP5, 7, 9 voltage is output on
voltage L
2
2
2
2
2
2
1
3 TP2 is VIL.
Item
Symbol
MITSUMI
Measuring Circuit
2-Input 1-Output 3-Circuit Video Switch MM1231~1234