.
LOW SUPPLY CURRENT : 0.53mA/AMPLIFIER
.
CLASS AB OUTPUT STAGE : NO CROSS-
OVER DISTORTION
.
PIN COMPATIBLE WITH LM124
.
LOW INPUT OFFSET VOLTAGE : 1mV
.
LOW INPUT OFFSET CURRENT : 2nA
.
LOW INPUT BIAS CURRENT : 30nA
.
GAIN BANDWIDTH PRODUCT : 1.3MHz
.
HIGH DEGREE OF ISOLATION BETWEEN
AMPLIFIERS : 120dB
.
OVERLOAD PROTECTION FOR INPUTS AND
OUTPUTS
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.
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
4
5
6
7
9
1 0
1 1
1 3
1
2
3
1 4
1 2
O u tpu t 1
In ve rt i n g i n p u t 1
N o n -i n ve r t i n g i n p u t 1
N o n - i n v e r t i n g i n p u t 2
I n v e r ti ng i n p u t 2
O u t p u t 2
O u t p u t 4
I n v e r ti n g i n p u t 4
N o n -i n v e r t i n g i n p u t 4
V
C C
N o n -i n v e r t i n g i n p u t 3
I n ve r ti n g i n p u t 3
V
C C
+
8
Ou tp u t 3
-
PIN CONNECTIONS (top view)
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
FOUR UA741
QUAD BIPOLAR OPERATIONAL AMPLIFIERS
LM148
LM248 - LM348
November 1997
1/9
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
No tes :
1. F or suppl y volt age less than maxi mum value, t he absol ut e maxi mum i nput volt age i s equal to t he suppl y
volt age.
2. Any of the ampl if i er output s can be short ed to ground i ndefi nit ely ; however , mor e than one s houl d not be
si mult aneousl y shor ted as the maxi mum juncti on t emper atur e wi l l be exceeded.
Non-inverting inpu t
V
CC
60k
340
36k
V
CC
25
Output
25
12k
Inverting
Input
350k
2.5 k
7.4pF
V
CC
60k
V
CC
SCHEMATIC DIAGRAM
LM148 - LM248 - LM348
2/9
ELECTRICAL CHARACTERISTICS
V
CC
=
15V, T
amb
= 25
o
C (unless otherwise specified)
Symbol
Parameter
LM148 - LM248 - LM348
Unit
Min.
Typ.
Max.
V
io
Input Offset Voltage (R
S
10k
)
T
amb
= 25
o
C
T
min
.
T
amb
T
max.
1
5
6
mV
I
io
Input Offset Current
T
amb
= 25
o
C
T
min
.
T
amb
T
max.
2
25
75
nA
I
ib
Input Bias Current
T
amb
= 25
o
C
T
min
.
T
amb
T
max.
30
100
300
nA
A
vd
Large Signal Voltage Gain (V
o
=
10V, R
L
= 2k
)
T
amb
= 25
o
C
T
min
.
T
amb
T
max.
50
25
160
V/mV
SVR
Supply Voltage Rejection Ratio (R
S
10k
)
T
amb
= 25
o
C
T
min
.
T
amb
T
max.
77
77
100
dB
I
CC
Supply Current, all Amp, no Load
T
amb
= 25
o
C
T
min
.
T
amb
T
max.
2.1
3.6
4.8
mA
V
icm
Input Common Mode Voltage Range
T
amb
= 25
o
C
T
min
.
T
amb
T
max.
12
12
V
CMR
Common Mode Rejection Ratio (R
S
10k
)
T
amb
= 25
o
C
T
min
.
T
amb
T
max.
70
70
110
dB
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
R
L
= 10k
R
L
= 2k
T
min
.
T
amb
T
max.
R
L
= 10k
R
L
= 2k
12
10
12
10
13
12
V
SR
Slew Rate (V
I
=
10V, R
L
= 10k
, C
L
= 100pF,
unity Gain)
0.25
0.5
V/
s
t
r
Rise Time (V
I
=
10V, R
L
= 10k
, C
L
= 100pF,
unity Gain)
0.3
s
K
OV
Overshoot (V
I
=
10V, R
L
= 10k
, C
L
= 100pF,
unity Gain)
5
%
R
I
Input Resistance
0.8
2.5
M
GBP
Gain Bandwidth Product (V
I
= 10 mV, R
L
= 10k
,
C
L
= 100pF, f = 100kHz)
0.7
1.3
MHz
THD
Total Harmonic Distortion (f = 1kHz, A
v
= 20dB,
R
L
= 10k
,
C
L
= 100pF, V
o
= 2V
pp
)
0.08
%
e
n
Equivalent Input Noise Voltage
(f = 1kHz, R
s
= 100
)
40
nV
Hz
V
o1
/V
o2
Channel Separation
120
dB
LM148 - LM248 - LM348
3/9
LM148 - LM248 - LM348
4/9
LM148 - LM248 - LM348
5/9
LM148 - LM248 - LM348
6/9
5k
1k
e
I
1/4
LM148
e
O
(10V peak)
V
CC
= 15V
e
O
Crosstalk = -20 log
101 x e
O
(dB)
10k
100
1/4
LM148
TEST CIRCUITS
LM148 - LM248 - LM348
7/9
PM-DIP14.EPS
PACKAGE MECHANICAL DATA
14 PINS - PL ASTIC DIP
Dimensions
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
a1
0.51
0.020
B
1.39
1.65
0.055
0.065
b
0.5
0.020
b1
0.25
0.010
D
20
0.787
E
8.5
0.335
e
2.54
0.100
e3
15.24
0.600
F
7.1
0.280
i
5.1
0.201
L
3.3
0.130
Z
1.27
2.54
0.050
0.100
DIP14.TBL
LM148 - LM248 - LM348
8/9
PM-SO14.EPS
PACKAGE MECHANICAL DATA
14 PINS - PL ASTIC MICROPACKAGE (SO)
Dimensions
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
1.75
0.069
a1
0.1
0.2
0.004
0.008
a2
1.6
0.063
b
0.35
0.46
0.014
0.018
b1
0.19
0.25
0.007
0.010
C
0.5
0.020
c1
45
o
(typ.)
D
8.55
8.75
0.336
0.334
E
5.8
6.2
0.228
0.244
e
1.27
0.050
e3
7.62
0.300
F
3.8
4.0
0.150
0.157
G
4.6
5.3
0.181
0.208
L
0.5
1.27
0.020
0.050
M
0.68
0.027
S
8
o
(max.)
SO14.TBL
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsi-
bility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which
may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON
Microelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes
and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical
componen ts in life support devices or systems without express written approval of SGS-THOMSON Microelectronics.
1997 SGS-THOMSON Microelectronics Printed in Italy All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco
The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A.
ORDER
CODE
:
LM148 - LM248 - LM348
9/9
PDF 
ZIP