This is information on a product in full production.
June 2013 DocID2161 Rev 4 1/12
LM148, LM248, LM348
Four UA741 quad bipolar operational amplifiers
Datasheet - production data
Features
•Low supply current: 0.53 mA per amplifier
•Class AB output stage: no crossover distortion
•Pin compatibility with LM124, LM224, LM324
•Low input offset voltage: 1 mV
•Low input offset current: 2 nA
•Low input bias current: 30 nA
•Gain bandwidth product: 1.3 MHz
•High degree of isolation between amplifiers:
120 dB
•Overload protection for inputs and outputs
Description
The LM148, LM248, LM348 consists of four
independent, high-gain internally-compensated,
low-power operational amplifiers which have been
designed to provide functional characteristics
identical to those of the familiar UA741
operational amplifier. In addition, the total supply
current for all four amplifiers is compatible with
the supply current of a single UA741 type
operational amplifier. 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 independently biasing each amplifier
and using layout techniques which minimize
thermal coupling.
The LM148, LM248, LM348 can be used where
multiple UA741 type amplifiers are being used
and in applications where amplifier matching or
high packaging density is required.
N
DIP14
D
SO14
Pin connections (top view)
Table 1. Device summary
Part
number
Temperature
range Package
LM148 -55 °C to 125 °C Product obsolete
LM248 -40 °C to 105 °CN
(1) and D(2)
1. N = Dual in-line package (DIP)
2. D = Small outline package (SO)
LM348 0 °C to 70°CN
(1) and D(2)
Order code example: LM348DT(3)
3. See Table 6: Order codes
www.st.com
Contents LM148, LM248, LM348
2/12 DocID2161 Rev 4
Contents
1 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1 DIP14 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2 SO14 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DocID2161 Rev 4 3/12
LM148, LM248, LM348 Schematic diagram
12
1 Schematic diagram
Figure 1. Schematic diagram
Non-inverting input
Inverting
input
Vcc+
350kW
2.5kW
Vcc+
36kW
340W
60W
60kW
Vcc-
25W
7.4pF
Vcc+
Output
Absolute maximum ratings LM148, LM248, LM348
4/12 DocID2161 Rev 4
2 Absolute maximum ratings
Table 2. Absolute maximum ratings
Symbol Parameters LM148 LM248 LM348 Unit
VCC Supply voltage
±
22
VViInput voltage(1)
1. For supply voltages less than the maximum value, the absolute maximum input voltage is equal to the
supply voltage.
Vid Differential input voltage ± 44
Output short-circuit duration(2)
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 will be exceeded.
Infinite
Ptot Power dissipation 500 mW
Toper Operating free-air temperature range -55 to 125 -40 to 105 0 to 70 C
°C
Tstg Storage temperature range -65 to 150
DocID2161 Rev 4 5/12
LM148, LM248, LM348 Electrical characteristics
12
3 Electrical characteristics
Table 3. Electrical performances at VCC = ± 15 V, Tamb = 25 °C
(unless otherwise specified)
Symbol Parameter Min. Typ. Max. Unit
Vio
Input offset voltage (Rs ≤ 10 kΩ), Tamb = 25 °C 1 5
mV
Input offset voltage (Rs ≤ 10 kΩ), Tmin ≤ Tamb ≤ Tmax 6
Iio
Input offset current, Tamb = 25 °C 2 25
nA
Input offset current, Tmin ≤ Tamb ≤ Tmax 75
Iib
Input bias current, Tamb = 25 °C 30 100
Input bias current, Tmin ≤ Tamb ≤ Tmax 300
Avd
Large signal voltage gain (Vo = ±10 V, RL = 2 kΩ) ,
Tamb = 25 °C 50 160
V/mV
Large signal voltage gain (Vo = ±10 V, RL = 2 kΩ) ,
Tmin ≤ Tamb ≤ Tmax
25
SVR
Supply voltage rejection ratio (Rs ≤ 10 kΩ),
Tamb = 25 °C
77
100
dB
Supply voltage rejection ratio (Rs ≤ 10 kΩ),
Tmin ≤ Tamb ≤ Tmax
Icc
Supply current, all amp, no load,
Tamb = 25 °C 2.1 3.6
mA
Supply current, all amp, no load,
Tmin ≤ Tamb ≤ Tmax
4.8
Vicm
Input common mode voltage range,
Tamb = 25 °C
±12 V
Input common mode voltage range,
Tmin ≤ Tamb ≤ Tmax
CMR
Common mode rejection ratio (Rs ≤ 10 kΩ),
Tamb = 25 °C
70
110
dB
Common mode rejection ratio (Rs ≤ 10 kΩ),
Tmin ≤ Tamb ≤ Tmax
Ios Output short-circuit current, Tamb = 25 °C 10 25 35 mA
±Vopp
Output voltage swing, Tamb = 25°C,
RL ≤ 10 kΩ12 13
V
Output voltage swing, Tamb = 25°C,
RL ≤ 2 kΩ10 12
Output voltage swing, Tmin ≤ Tamb ≤ Tmax,
RL ≤ 10 kΩ12
Output voltage swing, Tmin ≤ Tamb ≤ Tmax,
RL ≤ 2 kΩ10
SR Slew rate
(VI = ±10 V, RL = 10 kΩ, CL = 100 pF, unity gain) 0.25 0.5 V/μs
Electrical characteristics LM148, LM248, LM348
6/12 DocID2161 Rev 4
tr
Rise time
(VI = ±10 V, RL = 10 kΩ, CL = 100 pF, unity gain) 0.3 µs
KOV
Overshoot
(VI = ±10 V, RL = 10 kΩ, CL = 100 pF, unity gain) 5%
RIInput resistance 0.8 2.5 MΩ
GBP Gain bandwidth product
(VI = 10 mV, RL = 10 kΩ, CL = 100 pF, f = 100 kHz) 0.7 1.3 MHz
THD
Total harmonic distortion
(f = 1 kHz, Av = 20 dB, RL = 10 kΩ, CL = 100pF,
Vo = 2 Vpp)
0.08 %
en
Equivalent Input noise voltage
(f = 1 kHz, Rs = 100 Ω40
Vo1/Vo2 Channel separation 120 dB
Table 3. Electrical performances at VCC = ± 15 V, Tamb = 25 °C
(unless otherwise specified) (continued)
Symbol Parameter Min. Typ. Max. Unit
nV
Hz
------------
DocID2161 Rev 4 7/12
LM148, LM248, LM348 Package information
12
4 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
4.1 DIP14 package information
Figure 2. DIP14 package mechanical drawing
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Package information LM148, LM248, LM348
8/12 DocID2161 Rev 4
Table 4. DIP14 package mechanical data
Ref
Dimensions
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 5.33 0.210
A1 0.38 0.015
A2 2.92 3.30 4.95 0.115 0.130 0.195
b 0.36 0.46 0.56 0.014 0.018 0.022
b2 1.14 1.52 1.78 0.045 0.060 0.070
c 0.20 0.25 0.36 0.008 0.010 0.014
D 18.67 19.05 19.69 0.735 0.750 0.775
E 7.62 7.87 8.26 0.300 0.310 0.325
E1 6.10 6.35 7.11 0.240 0.250 0.280
e2.54 0.100
e1 15.24 0.600
eA 7.62 0.300
eB 10.92 0.430
L 2.92 3.30 3.81 0.115 0.130 0.150
DocID2161 Rev 4 9/12
LM148, LM248, LM348 Package information
12
4.2 SO14 package information
Figure 3. SO14 package mechanical drawing
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Package information LM148, LM248, LM348
10/12 DocID2161 Rev 4
Table 5. SO14 package mechanical data
Ref
Dimensions
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 1.35 1.75 0.053 0.069
A1 0.10 0.25 0.004 0.010
A2 1.10 1.65 0.043 0.065
B 0.33 0.51 0.013 0.020
C 0.19 0.25 0.007 0.010
D(1)
1. Dimension “D” does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions or gate burrs
should not exceed 0.15 mm per side.
8.55 8.75 0.337 0.344
E 3.80 4.00 0.150 0.157
e 1.27 0.050
H 5.80 6.20 0.228 0.244
h 0.25 0.50 0.010 0.020
L 0.40 1.27 0.016 0.050
k 0 8 0 0.315
ddd 0.10 0.004
DocID2161 Rev 4 11/12
LM148, LM248, LM348 Ordering information
12
5 Ordering information
6 Revision history
Table 6. Order codes
Order code Temperature range Package Packaging Marking
LM148D
-55 °C to 125 °C Product obsolete
LM148DT
LM248D
-40 °C to 105 °C
SO14
Tube
248
LM248DT Tape and reel
LM248N DIP14 Tube LM248N
LM348DT
0 °C to 70°C
SO14 Tape and reel 348
LM348N DIP14 Tube LM348N
Table 7. Document revision history
Date Revision Changes
05-Jun-2013 4
Description: small text changes
Table 1: Device summary: updated layout
Replaced Figure 2: DIP14 package mechanical drawing,
Figure 3: SO14 package mechanical drawing, Table 4:
DIP14 package mechanical data, and Table 5: SO14
package mechanical data.
Added Section 5: Ordering information
LM148, LM248, LM348
12/12 DocID2161 Rev 4
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