NJM2244
3-INPUT VIDEO SWITCH WITH 75Ω DRIVER
■
GENERAL DESCRIPTION
The
NJM2244
is a three input integrated video switch, which selects one
video signal from three input signals.
It contains driver circuit for 75Ω load and is able to connect to TV monitor.
Its operating supply voltage range is 5 to 12v and bandwidth is 10MHz.
Crosstalk is 70dB (at 4.43MHz).
NJM2244
contains clamp function and it can be operated while setting DC
level fixed in position of the video signal.
■
FEATURES
•
Operating Voltage
4.75 to 13V
•
3 input - 1 Output
•
Internal Driver Circuit for 75Ω Impedance
•
Muting Function available
•
Internal Clamp Function
•
Low power Dissipation
16.5mA
•
Cross-talk
70dB (at 4.43MHz)
•
Wide Frequency Range
10MHz (2V
P-P
Input)
•
Package Outline
DIP8, DMP8, SIP8
•
Bipolar Technology
■
APPLICATION
•
VCR Video Camera AV-TV
Video Disc Player
■
PIN CONFIGURATION
■
PACKAGE OUTLINE
NJM2244D
NJM2244M
NJM2244L
■
BLOCK DIAGRAM
Pin Connection
NJM2244D
NJM2244M
NJM2244L
■
INPUT CONTROL SIGNAL-OUTPUT SIGNAL
SW1
L
H
L/H
SW2
L
L
H
OUTPUT SIGNAL
V
IN
1
V
IN
2
V
IN
3
note): Input clamp Voltage is about 2/5 of Supply Voltage
Ver.2011-08-17
-1-
NJM2244
■
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Power Dissipation
SYMBOL
V
+
P
D
RATINGS
15
(DIP8) 500
(DMP8) 300
(SIP8) 800
-20 to +75
-40 to +125
(Ta = 25ºC)
UNIT
V
mW
mW
mW
ºC
ºC
Operating Temperature Range
Storage Temperature Range
T
opr
T
stg
■
ELECTRICAL CHARACTERISTICS
PARAMETER
Recommended Supply Voltage
Operating Current
Voltage Gain
Frequency Characteristics
Differential Gain
Differential Phase
Output Offset Voltage
Crosstalk
Switch Change Voltage
SYMBOL
V
+
I
CC
G
V
G
f
DG
DP
V
off
CT
V
CH
V
CL
S1 = S2 = S3 = S4 = S5 = 2
Vin = 2.0V
P-P
, 100kHz, VO / Vi, R
L
= 150Ω
Vin = 2.0V
P-P
, V
O
(10MHz) / V
O
(100kHz), R
L
= 150Ω
Vin = 2.0V
P-P
, staircase, R
L
= 150Ω
Vin = 2.0V
P-P
, staircase, R
L
= 150Ω
S1 = S2 = S3 = 2, S5 = 1
→
2Vo : Voltage change
Vin = 2V
P-P
, 4.43MHz, Vo / Vi
All inside Sw : ON
All inside Sw : OFF
TEST CONDITION
MIN.
4.75
11.5
-0.8
-1.0
-
-
-
-
2.4
-
(V
+
= 5V, Ta = 25ºC)
TYP.
-
16.5
-0.3
-
0.3
0.3
0
-70
-
-
MAX.
13.0
22.0
+0.2
+1.0
-
-
±30
-
-
0.8
UNIT
V
mA
dB
dB
%
deg.
mV
dB
V
V
(note) Unless specified, tested with three mode below.
a) S1 = 1, S2 = S3 = S4 = S5 = 2 b) S2 = S4 = 1, S1 = S3 = S5 = 2 c) S1 = S2 = 2, S3 = S5 = 1, S4 = 1 or 2
■
APPLICATION
Oscillation Prevention on light loading conditions
Recommended under circuit
-2-
Ver.2011-08-17
NJM2244
■
TEST CIRCUIT
DC Voltage Each Terminal
Typ. on Test Circuit Ta = 25ºC
Terminal Name
DC Voltage
V
IN
1
2
5
SW1
-
V
IN
2
2
5
SW2
-
V
IN
3
2
5
V
+
-
2
5
V
OUT
V
+
-0.7
GND
-
V
+
V
+
V
+
Ver.2011-08-17
-3-
NJM2244
■
EQUIVALENT CIRCUIT
PIN NO.
PIN
FUNCTION
INSIDE EQUIVALENT CIRCUIT
PIN NO.
PIN
FUNCTION
INSIDE EQUIVALENT CIRCUIT
1
V
IN
1
5
V
IN
3
(Mute)
2
SW1
6
V
+
3
V
IN
2
7
V
OUT
4
SW2
8
GND
-4-
Ver.2011-08-17
NJM2244
■
APPLICATION
This IC requires 1MΩ resistance between INPUT and GND pin for clamp type input since the minute current causes
an unstable pin voltage.
This IC requires 0.1uF capacitor between INPUT and GND, 1MΩ resistance between INPUT and GND for clamp type
input at mute mode.
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
Ver.2011-08-17
-5-
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