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LM148QML
Quad 741 Op Amps
General Description
The LM148 is a true quad LM741. It consists of four inde-
pendent, high gain, internally compensated, low power op-
erational amplifiers which have been designed to provide
functional characteristics identical to those of the familiar
LM741 operational amplifier. In addition the total supply
current for all four amplifiers is comparable to the supply
current of a single LM741 type op amp. Other features
include input offset currents and input bias current which are
much less than those of a standard LM741. Also, excellent
isolation between amplifiers has been achieved by indepen-
dently biasing each amplifier and using layout techniques
which minimize thermal coupling.
The LM148 can be used anywhere multiple LM741 or
LM1558 type amplifiers are being used and in applications
where amplifier matching or high packing density is required.
Features
n
741 op amp operating characteristics
n
Class AB output stage -- no crossover distortion
n
Pin compatible with the LM124
n
Overload protection for inputs and outputs
n
Low supply current drain:
0.6 mA/Amplifier
n
Low input offset voltage:
1 mV
n
Low input offset current:
4 nA
n
Low input bias current
30 nA
n
High degree of isolation between amplifiers:
120 dB
n
Gain bandwidth product (unity gain):
1.0 MHz
Ordering Information
NS PART NUMBER
SMD PART NUMBER
NS PACKAGE NUMBER
PACKAGE DESCRIPTION
LM148E/883
E20A
20LD LEADLESS CHIP CARRIER
LM148J/883
J14A
14LD CERDIP
Connection Diagrams
20120502
Top View
See NS Package Number J14A
February 2005
LM148QML
Quad
741
Op
Amp
2005 National Semiconductor Corporation
DS201205
www.national.com
Connection Diagrams
(Continued)
20120548
Top View
See NS Package Number E20A
Schematic Diagram
20120501
* 1 pF in the LM149
LM148QML
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2
Absolute Maximum Ratings
(Note 1)
Supply Voltage
22V
Differential Input Voltage
44V
Output Short Circuit Duration(Note 2)
Continuous
Power Dissipation (P
d
at 25C) (Note 3)
1100mW
Thermal Resistance
JA
CERDIP (Still Air)
CERDIP (500LF/ Min Air flow)
LCC (Still Air)
LCC (500LF/ Min Air flow)
103C/W
52C/W
90C/W
66C/W
JC
CERDIP
LCC
19C/W
21C/W
Maximum Junction Temperature (T
jMAX
)
150C
Operating Temperature Range
-55C
T
A
+125C
Storage Temperature Range
-65C
T
A
+150C
Lead Temperature (Soldering, 10 sec.) Ceramic
300C
ESD tolerance (Note 4)
500V
Quality Conformance Inspection
MIL-STD-883, Method 5005 -- Group A
Subgroup
Description
Temp ( C)
1
Static tests at
+25
2
Static tests at
+125
3
Static tests at
-55
4
Dynamic tests at
+25
5
Dynamic tests at
+125
6
Dynamic tests at
-55
7
Functional tests at
+25
8A
Functional tests at
+125
8B
Functional tests at
-55
9
Switching tests at
+25
10
Switching tests at
+125
11
Switching tests at
-55
Electrical Characteristics
DC PARAMETERS (The following conditions apply to all parameters, unless otherwise specified.) V
CC
=
15V, R
S
= 0
Symbol
Parameter
Conditions
Notes
Min Max
Units
Sub-
groups
V
IO
Input Offset Voltage
V
CM
= 0V, R
S
= 50
-5
+5
mV
1
-6
+6
mV
2,3
I
IO
Input Offset Current
V
CM
= 0V
-25
+25
nA
1
-75
+75
nA
2,3
I
IB
Input Bias Current
V
CM
= 0V
1
100
nA
1
1
325
nA
2,3
R
in
Input Resistance
(Note 5)
0.8
M
1
PSRR+
Power Supply Rejection Ratio
+V
CC
= +15V and +5V, -V
CC
=
-15V, R
S
= 50
77
dB
1, 2, 3
PSRR-
Power Supply Rejection Ratio
+V
CC
= +15V, -V
CC
= -15V and
-5V, R
S
= 50
77
dB
1, 2, 3
LM148QML
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3
Electrical Characteristics
(Continued)
DC PARAMETERS (The following conditions apply to all parameters, unless otherwise specified.) V
CC
=
15V, R
S
= 0
Symbol
Parameter
Conditions
Notes
Min Max
Units
Sub-
groups
CMRR
Common Mode Rejection Ratio +V
CM
=
12V, R
S
= 50
70
dB
1, 2, 3
I
OS
+
Short Circuit Current
-55
-14
mA
1
I
OS
-
Short Circuit Current
14
55
mA
1
I
CC
Power Supply Current
0.4
3.6
mA
1
0.4
4.5
mA
2, 3
A
VS
+
Large Signal Voltage Gain
V
OUT
= 0V to +10V, R
L
>
2 k
50
V/mV
4
25
V/mV
5, 6
A
VS
-
Large Signal Voltage Gain
V
OUT
= 0V to -10V, R
L
>
2 k
50
V/mV
4
25
V/mV
5, 6
V
out
+
Output Voltage Swing
R
L
= 10 k
+12
V
4, 5, 6
R
L
= 2k
+10
V
4, 5, 6
V
out
-
Output Voltage Swing
R
L
= 10 k
-12
V
4, 5, 6
R
L
= 2k
-10
V
4, 5, 6
Electrical Characteristics
AC PARAMETERS (The following conditions apply to all parameters, unless otherwise specified.) V
CC
=
15V, A
V
= 1, R
S
=
0
Symbol
Parameter
Conditions
Notes
Min Max
Units
Sub-
groups
SR
Slew Rate
0.2
V/s
7, 8A, 8B
G
BW
Gain Bandwidth Product
0.4
1.4
MHz
7, 8A, 8B
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed
specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test
conditions.
Note 2: Any of the amplifier outputs can be shorted to ground indefinitely; however, more than one should not be simultaneously shorted as the maximum junction
temperature will be exceeded.
Note 3: The maximum power dissipation for these devices must be derated at elevated temperatures and is dicated by T
JMAX
,
JA
, and the ambient temperature,
T
A
. The maximum available power dissipation at any temperature is P
d
= (T
JMAX
- T
A
)/
JA
or the number given in the Absolute Maximum Ratings, whichever is less.
Note 4: Human body model, 1.5 k
in series with 100 pF
Note 5: Parameter Guaranteed, Not Tested.
Cross Talk Test Circuit
V
S
=
15V
20120506
20120507
LM148QML
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4
Cross Talk Test Circuit
V
S
=
15V (Continued)
20120543
LM148QML
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5
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