LM149 National Semiconductor, LM149 Datasheet - Page 3

• Manufacturer Part Number: LM149
• Description: Quad 741 Op Amps LM149 Wide Band Decompensated (AV MIN = 5)
• Manufacturer: National Semiconductor

Input Bias Current
Large Signal Voltage Gain
Output Voltage Swing
Input Voltage Range
Common-Mode Rejection
Ratio
Supply Voltage Rejection
(Note 3)
Electrical Characteristics
Note 1: 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 2: The maximum power dissipation for these devices must be derated at elevated temperatures and is dicated by T
The maximum available power dissipation at any temperature is P
Note 3: These specifications apply for V
Note 4: Refer to RETS 148X for LM148 military specifications and refer to RETS 149X for LM149 military specifications.
Note 5: Human body model, 1.5 k
Cross Talk Test Circuit
Application Hints
The LM148 series are quad low power 741 op amps. In the
proliferation of quad op amps, these are the first to offer the
convenience of familiar, easy to use operating characteris-
tics of the 741 op amp. In those applications where 741 op
amps have been employed, the LM148 series op amps can
be employed directly with no change in circuit performance.
The LM149 series has the same characteristics as the
LM148 except it has been decompensated to provide a
wider bandwidth. As a result the part requires a minimum
gain of 5.
The package pin-outs are such that the inverting input of
each amplifier is adjacent to its output. In addition, the ampli-
fier outputs are located in the corners of the package which
Parameter
in series with 100 pF.
V
R
V
R
V
R
R
S
S
S
S
L
L
S
S
=
>
= 2 k
=
=
=
±
15V and over the absolute maximum operating temperature range (T
10 k
10 k ,
±
2 k
±
±
15V, V
15V, R
15V
Conditions
(Continued)
±
DS007786-6
OUT
L
5V
= 10 k
=
V
d
±
S
= (T
10V,
jMAX
±
15V
− T
V
3
S
A
)/
=
±
±
±
Min Typ Max Min Typ Max Min Typ Max
jA
25
70
77
±
LM148/LM149
12
10
12
simplifies PC board layout and minimizes package related
capacitive coupling between amplifiers.
The input characteristics of these amplifiers allow differential
input voltages which can exceed the supply voltages. In ad-
dition, if either of the input voltages is within the operating
common-mode range, the phase of the output remains cor-
rect. If the negative limit of the operating common-mode
range is exceeded at both inputs, the output voltage will be
positive. For input voltages which greatly exceed the maxi-
mum supply voltages, either differentially or common-mode,
resistors should be placed in series with the inputs to limit
the current.
15V
or the 25˚C P
±
±
90
96
13
12
325
dMAX
, whichever is less.
±
±
±
15
70
77
12
10
12
LM248
±
±
L
96
90
13
12
jMAX
T
A
500
,
T
jA
H
, and the ambient temperature, T
) unless otherwise noted.
±
±
±
15
70
77
12
10
12
DS007786-7
LM348
±
±
90
96
13
12
400
www.national.com
Units
V/mV
nA
dB
dB
V
V
V
A
.