NJM2342
- 1 -
Ver.2003-06-30
QUAD BUFFER for REFERENCE CIRCUIT IC
GENERAL DESCRIPTION
PACKAGE OUTLINE
FEATURES
Quad Buffer internal
TVSP10
Sink/Source Output
Offset Voltage
Vio=1mV typ.
Operating Voltage
3V to 14V
Quiescent Current
1mA typ.
Bipolar Technology
Package Outline
TVSP10
PIN CONFIGURATION
The
NJM2342
is a 4 channel buffer IC packaged in the small TVSP 10.
The
NJM2342
provides buffered voltage from the external input voltage.
The sink-source output configuration effectively absorbs transient
response of load changes.
Therefore, it is suitable for reference voltage generation for Video DAC,
LCD bias voltage and other applications where transient response becomes
an issue.
NJM2342RB2
A
B C
D
1
2
3
4
5 6
7
8
10
9
PIN FUNCTION
1. A OUTPUT
2. A +INPUT
3. V
+
4. B +INPUT
5. B OUTPUT
6. C OUTPUT
7. C +INPUT
8. GND
9. D +INPUT
10. D OUTPUT
NJM2342RB2
NJM2342
- 2 -
Ver.2003-06-30
ABSOLUTE MAXIMUM RATINGS (Ta=25C)
PARAMETER SYMBOL
MAXIMUM
RATINGS
UNIT
Supply Voltage
V
+
15 V
Common Mode Input Voltage
V
IC
-0.3
+14 (note1)
V
Power Dissipation
P
D
320
mW
Operating Temperature Range
T
OPR
-40
+85
C
Storage Temperature Range
T
STG
-50
+125
C
(note1) When the supply voltage is less than 14V,
the absolute maximum input voltage is equal to the supply voltage.
ELECTRICAL CHARACTERISTICS (V
+
=5V,Ta=25C)
PARAMETER SYMBOL
TEST
CONDITION MIN.
TYP.
MAX.
UNIT
Operating Voltage
V
+
(note2) 3
14 V
Output Offset Voltage
V
OS
1
5 mV
Input Bias Current
I
B
20 150 nA
Lord Regulation 1
V1 V
IN
+
=2.5V, I
SOURCE
=0 to 30mA
0.2
15
mV
Lord Regulation 2
V2 V
IN
+
=2.5V, I
SINK
=0 to 15mA
0.5
15
mV
Input Common Mode
Voltage Range
V
ICM
I
SOURCE
=, I
SINK
=12mA
1
3.2
V
Common Mode Rejection Ratio
CMR
V
IN
+
=1 to 3.2V
85
dB
Supply Voltage Rejection Ratio
SVR
V
+
=3V to 14V
100
dB
Operating Current
I
CC
RL=
1.0 2.0
mA
Slew Rate
SR
RL=2k, f=1kHz
0.7
V/us
(note2) Input common mode voltage range case to when operating low voltage.
TEST CIRCUITS
V
+
I
SOURCE
+INPUT
OUTPUT
I
SINK
V
V
OUT
V
+
V
OUT
I
CC
V
A
1/2V
+
+INPUT
OUTPUT
V
OS
V
NJM2342
- 3 -
Ver.2003-06-30
TYPICAL APPLICATIONS
V
IN
V
OUT1
IC
R1
NJM2342
R
S
V
OUT2
V
OUT3
V
OUT4
V
OUT5
R2
R
R
R
R
R
IC is Shunt Regulator.
V
REF
=2.5V
NJM431
NJM2380/A
NJM2390/A
V
REF
=1.25V
NJM2373/A
NJM2376
NJM2820/21/22
TYPICAL CHARACTERISTICS
0
0.5
1
1.5
2
0
5
10
15
O
per
at
i
ng Cur
r
ent
I
CC
(m
A
)
Operating Current vs. Operating Voltage
(V
IN
+
=1/2V
+
, Ta=25
o
C)
Operating Voltage V
+
(V)
-6
-4
-2
0
2
4
6
4
6
8
10
12
14
Ach
Bch
Cch
Dch
O
u
t
put
O
f
f
s
et
V
o
l
t
age V
OS
(m
V
)
Output Offset Voltage vs. Operating Voltage
(V
IN
+
=1/2V
+
, Ta=25
o
C)
Operating Voltage V
+
(V)
NJM2342
- 4 -
Ver.2003-06-30
TYPICAL CHARACTERISTICS
10
12
14
16
18
20
4
6
8
10
12
14
Ach
Bch
Cch
Dch
Input Bias Current vs. Operating Voltage
(V
IN
+
=1/2V
+
, Ta=25
o
C)
I
n
pu
t
B
i
as
C
u
r
r
ent
I
B
(nA
)
Operating Voltage V
+
(V)
-3
-2.5
-2
-1.5
-1
-0.5
0
0
5
10 15
20 25
30 35
40
Ach
Bch
Cch
Dch
Load Regulation 1 vs. Source Current
(V
+
=5V, V
IN
+
=2.5V, Ta=25
o
C)
Source Current I
SOURCE
(mA)
Lo
ad R
egu
l
a
t
i
on 1
V1
(
m
V)
0
0.5
1
1.5
2
2.5
3
0
5
10
15
20
25
30
Ach
Bch
Cch
Dch
Load Regulation 2 vs. Sink Current
(V
+
=5V, V
IN
+
=2.5V, Ta=25
o
C)
Sink Current I
SINK
(mA)
L
oad
R
egul
at
io
n 2
V2
(
m
V)
2
2.5
3
3.5
4
0
5
10 15
20 25
30 35
40
V
IN
+
=3.5V
V
IN
+
=3.0V
V
IN
+
=2.5V
Output Voltage vs. Source Current
(V
+
=5V, Ta=25
o
C)
Source Current I
SOURCE
(mA)
O
u
t
put
V
o
lt
a
ge V
O
(V
)
0
0.5
1
1.5
2
0
5
10
15
20
V
IN
+
=1.0V
Output Voltage vs. Sink Current
(V
+
=5V, Ta=25
o
C)
Sink Current I
SINK
(mA)
O
u
t
put
V
o
ltage V
O
(V
)
V
IN
+
=0.8V
V
IN
+
=0.7V
NJM2342
- 5 -
Ver.2003-06-30
TYPICAL CHARACTERISTICS
0
0.5
1
1.5
2
2.5
3
-50
-25
0
25
50
75 100 125
Temperature Ta (
o
C)
O
per
a
t
i
ng
C
u
r
r
ent
I
CC
(m
A
)
Operating Current vs. Temperature
(V
+
=5V, V
IN
+
=2.5V)
-6
-4
-2
0
2
4
6
-50
-25
0
25
50
75
100 125
Ach
Bch
Cch
Dch
Temperature Ta (
o
C)
O
u
t
p
ut
O
f
f
s
e
t
V
o
l
t
age
V
OS
(m
V
)
Output Offset Voltage vs. Temperature
(V
+
=5V, V
IN
+
=2.5V)
0
1
2
3
4
5
-50
-25
0
25
50
75
100 125
Temperature Ta (
o
C)
I
n
put
C
o
m
m
o
n
M
ode V
o
ltage
R
ange
V
IC
M
(V
)
Input Common Mode Voltage Range vs. Temperature
(V
+
=5V)
I
SINK
=12mA
I
SOURCE
=12mA
Input Common Mode
Voltage Range
0
10
20
30
40
50
60
70
-50
-25
0
25
50
75
100 125
Temperature Ta (
o
C)
S
o
u
r
c
e
Curr
ent
I
S
O
URC
E
(m
A
)
Source Current vs. Temperature
(V
+
=5V, V
IN
+
=2.5V)
0
10
20
30
40
50
60
70
-50
-25
0
25
50
75
100 125
Temperature Ta (
o
C)
Si
nk
Cur
r
ent
I
SI
N
K
(m
A
)
Sink Current vs. Temperature
(V
+
=5V, V
IN
+
=2.5V)
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