LM148,248,348.PDF
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FOUR UA741 QUAD BIPOLAR OPERATIONAL AMPLIFIERS
LM148
LM248 - LM348
FOUR UA741
QUAD BIPOLAR OPERATIONAL AMPLIFIERS
.
CLASS AB OUTPUT STAGE : NO CROSS-
OVER DISTORTION
.
LOW INPUT OFFSET VOLTAGE : 1mV
.
LOW INPUT OFFSET CURRENT : 2nA
.
GAIN BANDWIDTH PRODUCT : 1.3MHz
.
HIGH DEGREE OF ISOLATION BETWEEN
AMPLIFIERS : 120dB
.
OVERLOAD PROTECTION FOR INPUTS AND
OUTPUTS
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
ORDER CODES
Part Num-
ber
Temperature
Range
Package
N
D
LM148
–55
o
C, +125
o
C
•
•
LM248
–40
o
C, +105
o
C
•
•
LM348
0
o
C, +70
o
C
•
•
Example :
LM348D
PIN CONNECTIONS
(top view)
DESCRIPTION
The LM148 consists of four independent,high gain
internally compensated, low power operational
amplifiers which have been designed to provide
functionalcharacteristics identical to those of the fa-
miliar UA741 operational amplifier. In addition the
total supply current for all four amplifiers is compa-
rable to the supply current of a single UA741 type
op amp. Other features include input offset current
and input bias current which are much less than
those of a standard UA741. Also, excellent isolation
between amplifiers has been achieved by inde-
pendently biasing each amplifier and using layout
techniques which minimize thermal coupling.
The LM148 can be used anywhere multiple UA741
type amplifiers are being used and in applications
where amplifier matching or high packing density is
required.
Ou tpu t 1
1
14
Output 4
In ve rting inpu t 1
2
13
Inverting input 4
Non-inverting i nput 1
3
12
N on-inverting input 4
V
CC
+
4
11
V
CC
-
Non-inverting input 2
5
10
N on-inverting input 3
Inverting input 2
6
9
Inverting input 3
Out put 2
7
8
Output 3
April 1995
1/9
.
LOW SUPPLY CURRENT : 0.53mA/AMPLIFIER
.
PIN COMPATIBLE WITH LM124
.
LOW INPUT BIAS CURRENT : 30nA
LM148 - LM248 - LM348
SCHEMATIC DIAGRAM
V
CC
25
W
Non-inverting inpu t
Inverting
Input
12k
W
Output
350k
W
7.4pF
25
W
V
CC
2.5 k
W
V
CC
60k
W
340
W
60k
W
36k
W
V
CC
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
LM148
LM248
LM348
Unit
V
CC
Supply Voltage
±
22
±
22
±
22
V
V
id
Differential Input Voltage
±
44
±
44
±
44
V
V
i
Input Voltage (note 1)
±
22
±
22
±
22
V
P
tot
Power Dissipation
500
500
500
mW
Output Short-circuit Duration (note 2)
Infinite
T
oper
Operating Free-air Temperature Range
–55, +125
–40, +105
0, +70
o
C
T
stg
Storage Temperature Range
–65, +150
–65, +150
–65, +150
o
C
Notes :
1. For supply voltage less than maximum value, the absolute maximum input voltage is equal to the supply
voltage.
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.
2/9
LM148 - LM248 - LM348
ELECTRICAL CHARACTERISTICS
V
CC
=
±
15V, T
amb
=
25
o
C (unless otherwise specified)
Symbol
Parameter
LM148 - LM248 - LM348
Unit
Min.
Typ.
Max.
V
io
T
amb
=25
o
C
T
min
.
3
10k
W
)
mV
1
5
6
3
T
amb
3
T
max.
I
io
Input Offset Current
T
amb
=25
o
C
T
min
.
nA
2
25
75
3
T
amb
3
T
max.
I
ib
Input Bias Current
T
amb
=25
o
C
T
min
.
nA
30
100
300
3
T
amb
3
T
max.
A
vd
Large Signal Voltage Gain (V
o
=
±
10V, R
L
=2k
W
)
V/mV
50
25
160
3
T
amb
3
T
max.
SVR
Supply Voltage Rejection Ratio (R
S
3
10k
W
)
dB
77
77
100
3
T
amb
3
T
max.
I
CC
Supply Current, all Amp, no Load
T
amb
=25
o
C
T
min
.
mA
2.1
3.6
4.8
3
T
amb
3
T
max.
V
icm
Input Common Mode Voltage Range
T
amb
=25
o
C
T
min
.
V
±
12
3
T
amb
3
T
max.
±
12
CMR
Common Mode Rejection Ratio (R
S
3
10k
W
)
dB
70
70
110
3
T
amb
3
T
max.
I
OS
Output Short-circuit Current
T
amb
=25
o
C
10
25
35
mA
±
V
opp
Output Voltage Swing
T
amb
=25
o
C
V
R
L
= 10k
W
12
10
12
10
13
12
R
L
=2k
W
T
min
.
3
T
amb
3
T
max.
R
L
= 10k
W
R
L
=2k
W
SR
T
amb
=25
o
C, unity Gain)
±
10V, R
L
= 10k
W
,C
L
= 100pF,
V/
m
s
0.25
0.5
t
r
T
amb
=25
o
C, unity Gain)
±
10V, R
L
= 10k
W
,C
L
= 100pF,
m
s
0.3
K
OV
T
amb
=25
o
C, unity Gain)
±
10V, R
L
= 10k
W
,C
L
= 100pF,
%
5
R
I
Input Resistance
0.8
2.5
M
W
GBP
Gain Bandwidth Product (V
I
= 10 mV, R
L
= 10k
W
,
MHz
0.7
1.3
THD
Total Harmonic Distortion (f = 1kHz, A
v
= 20dB,
R
L
= 10k
W,
C
L
= 100pF, T
amb
=25
o
C, v
o
=2V
pp
)
0.08
%
e
n
Equivalent Input Noise Voltage
(f = 1kHz, R
s
= 100
nV
/```
W
)
40
Hz
V
o1
/V
o2
Channel Separation
120
dB
3/9
Input Offset Voltage (R
S
T
amb
=25
o
C
T
min
.
T
amb
=25
o
C
T
min
.
T
amb
=25
o
C
T
min
.
Slew Rate (V
I
=
Rise Time (V
I
=
Overshoot (V
I
=
C
L
= 100pF, f = 100kHz, T
amb
=25
o
C)
148-07.EPS
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maciejek62
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