Datasheet LM148MW8, LM148J-883, LM148E-883, JM38510-11001SD, JM38510-11001SC Datasheet (NSC)

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LM148/LM248/LM348 Quad 741 Op Amps LM149 Wide Band Decompensated (A
V (MIN)
=
5)
General Description
The LM148 can be used anywhere multiple 741or1558type amplifiers are being used and in applications where amplifier matching or high packing density is required.
Features
n 741 op amp operating characteristics n Low supply current drain: 0.6 mA/Amplifier n Class AB output stage —no crossover distortion n Pin compatible with the LM124 n Low input offset voltage: 1 mV n Low input offset current: 4 nA n Low input bias current: 30 nA n Gain bandwidth product
LM148 (unity gain): 1.0 MHz LM149 (A
V
5): 4 MHz
n High degree of isolation between amplifiers: 120 dB n Overload protection for inputs and outputs
Schematic Diagram
DS007786-1
* 1 pF in the LM149
May 1999
LM148/LM149 Series Quad 741 Op Amp
© 1999 National Semiconductor Corporation DS007786 www.national.com
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Absolute Maximum Ratings (Note 4)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
LM148/LM149 LM248 LM348
Supply Voltage
±
22V
±
18V
±
18V
Differential Input Voltage
±
44V
±
36V
±
36V Output Short Circuit Duration (Note 1) Continuous Continuous Continuous Power Dissipation (P
d
at 25˚C) and
Thermal Resistance (θ
jA
), (Note 2)
Molded DIP (N) P
d
750 mW
θ
jA
100˚C/W
Cavity DIP (J) P
d
1100 mW 800 mW 700 mW
θ
JA
110˚C/W 110˚C/W 110˚C/W
Maximum Junction Temperature (T
jMAX
) 150˚C 110˚C 100˚C
Operating Temperature Range −55˚C T
A
+125˚C −25˚C TA≤ +85˚C 0˚C TA≤ +70˚C Storage Temperature Range −65˚C to +150˚C −65˚C to +150˚C −65˚C to +150˚C Lead Temperature (Soldering, 10 sec.) Ceramic 300˚C 300˚C 300˚C Lead Temperature (Soldering, 10 sec.) Plastic 260˚C Soldering Information
Dual-In-Line Package
Soldering (10 seconds) 260˚C 260˚C 260˚C
Small Outline Package
Vapor Phase (60 seconds) 215˚C 215˚C 215˚C
Infrared (15 seconds) 220˚C 220˚C 220˚C See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” for other methods of soldering surface mount devices.
ESD tolerance (Note 5) 500V 500V 500V
Electrical Characteristics
(Note 3)
Parameter Conditions LM148/LM149 LM248 LM348 Units
Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage T
A
=
25˚C, R
S
10 k 1.0 5.0 1.0 6.0 1.0 6.0 mV
Input Offset Current T
A
=
25˚C 4 25 4 50 4 50 nA
Input Bias Current T
A
=
25˚C 30 100 30 200 30 200 nA
Input Resistance T
A
=
25˚C 0.8 2.5 0.8 2.5 0.8 2.5 M
Supply Current All Amplifiers T
A
=
25˚C, V
S
=
±
15V 2.4 3.6 2.4 4.5 2.4 4.5 mA
Large Signal Voltage Gain T
A
=
25˚C, V
S
=
±
15V 50 160 25 160 25 160 V/mV
V
OUT
=
±
10V, RL≥ 2k
Amplifier to Amplifier T
A
=
25˚C, f=1Hzto20kHz
Coupling (Input Referred) See Crosstalk −120 −120 −120 dB
Test Circuit
Small Signal Bandwidth LM148 Series 1.0 1.0 1.0 MHz
T
A
=
25˚C
LM149 Series 4.0 4.0 4.0 MHz
Phase Margin LM148 Series (A
V
=
1) 60 60 60 degrees
T
A
=
25˚C
LM149 Series (A
V
=
5) 60 60 60 degrees
Slew Rate LM148 Series (A
V
=
1) 0.5 0.5 0.5 V/µs
T
A
=
25˚C
LM149 Series (A
V
=
5) 2.0 2.0 2.0 V/µs
Output Short Circuit Current T
A
=
25˚C 25 25 25 mA
Input Offset Voltage R
S
10 k 6.0 7.5 7.5 mV
Input Offset Current 75 125 100 nA
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Electrical Characteristics (Continued)
(Note 3)
Parameter Conditions LM148/LM149 LM248 LM348 Units
Min Typ Max Min Typ Max Min Typ Max
Input Bias Current 325 500 400 nA Large Signal Voltage Gain V
S
=
±
15V, V
OUT
=
±
10V, 25 15 15 V/mV
R
L
>
2k
Output Voltage Swing V
S
=
±
15V, R
L
=
10 k
±12±
13
±12±
13
±12±
13 V
R
L
=
2k
±10±
12
±10±
12
±10±
12 V
Input Voltage Range V
S
=
±
15V
±
12
±
12
±
12 V
Common-Mode Rejection R
S
10 k 70 90 70 90 70 90 dB Ratio Supply Voltage Rejection R
S
10 k,±5V VS≤±15V 77 96 77 96 77 96 dB
Note 1: Any of the amplifier outputs can be shortedtoground indefinitely; however, more than one should not be simultaneously shorted as the maximum junction temperature will be exceeded.
Note 2: Themaximum power dissipation for these devices must be derated at elevated temperatures and is dicated by T
jMAX
, θjA, and the ambient temperature, TA.
The maximum available power dissipation at any temperature is P
d
=
(T
jMAX−TA
)/θjAor the 25˚C P
dMAX
, whichever is less.
Note 3: These specifications apply for V
S
=
±
15V and over the absolute maximum operating temperature range (TL≤ TA≤ TH) unless otherwise noted.
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 kin series with 100 pF.
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 characteris­tics 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 package pin-outs are such that the inverting input of each amplifier is adjacent to its output. In addition, the ampli­fier outputs are located in the corners of the package which
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 ad­dition, if either of the input voltages is within the operating common-mode range, the phase of the output remains cor­rect. 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 maxi­mum supply voltages, either differentially or common-mode, resistors should be placed in series with the inputs to limit the current.
DS007786-6
DS007786-7
V
S
=
±
15V
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Application Hints (Continued)
Like the LM741, these amplifiers can easily drive a 100 pF capacitive load throughout the entire dynamic output voltage and current range. However, if very large capacitive loads must be driven by a non-inverting unity gain amplifier, a re­sistor should be placed between the output (and feedback connection) and the capacitance to reduce the phase shift resulting from the capacitive loading.
The output current of each amplifier in the package is limited. Short circuits from an output to either ground or the power supplies will not destroy the unit. However, if multiple output shorts occur simultaneously, the time duration should be short to prevent the unit from being destroyed as a result of excessive power dissipation in the IC chip.
As with most amplifiers, care should be taken lead dress, component placement and supply decoupling in order to en-
sure stability.For example, resistors from the output to an in­put should be placed with the body close to the input to mini­mize “pickup” and maximize the frequency of the feedback pole which capacitance from the input to ground creates.
A feedback pole is created when the feedback around any amplifier is resistive. The parallel resistance and capacitance from the input of the device (usually the inverting input) toAC ground set the frequency of the pole. In many instances the frequency of this pole is much greater than the expected 3 dB frequency of the closed loop gain and consequently there is negligible effect on stability margin. However, if the feed­back pole is less than approximately six times the expected 3 dB frequency a lead capacitor should be placed from the output to the input of the op amp. The value of the added ca­pacitor should be such that the RC time constant of this ca­pacitor and the resistance it parallels is greater than or equal to the original feedback pole time constant.
Typical Performance Characteristics
Supply Current
DS007786-23
Input Bias Current
DS007786-24
Voltage Swing
DS007786-25
Positive Current Limit
DS007786-26
Negative Current Limit
DS007786-27
Output Impedance
DS007786-28
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Typical Performance Characteristics (Continued)
Common-Mode Rejection Ratio
DS007786-29
Open Loop Frequency Response
DS007786-30
Bode Plot LM148
DS007786-31
Bode Plot LM149
DS007786-32
Large Signal Pulse Response (LM148)
DS007786-33
Large Signal Pulse Response (LM149)
DS007786-34
Small Signal Pulse Response (LM148)
DS007786-35
Small Signal Pulse Response (LM149)
DS007786-36
Undistorted Output Voltage Swing
DS007786-37
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Typical Performance Characteristics (Continued)
Gain Bandwidth
DS007786-38
Slew Rate
DS007786-39
Inverting Large Signal Pulse Response (LM149)
DS007786-40
Inverting Large Signal Pulse Response (LM148)
DS007786-41
Input Noise Voltage and Noise Current
DS007786-42
Positive Common-Mode Input Voltage Limit
DS007786-43
Negative Common-Mode Input Voltage Limit
DS007786-5
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Typical Applications—LM148
One Decade Low Distortion Sinewave Generator
DS007786-8
f
MAX
=
5 kHz, THD 0.03
% R1=100k pot. C1=0.0047 µF, C2=0.01 µF, C3=0.1 µF, R2=R6=R7=1M, R3=5.1k, R4=12,R5=240,Q=NS5102, D1=1N914, D2=3.6V avalanche diode (ex. LM103), V
S
=
±
15V
A simpler version with some distortion degradation at high frequencies can be made by using A1 as a simple inverting amplifier, and by putting back to back zeners in the feedback loop of A3.
Low Cost Instrumentation Amplifier
DS007786-9
V
S
=
±
15V
R=R2, trim R2 to boost CMRR
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Typical Applications—LM148 (Continued)
Low Drift Peak Detector with Bias Current Compensation
DS007786-10
Adjust R for minimum drift D3 low leakage diode D1 added to improve speed V
S
=
±
15V
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Typical Applications—LM148 (Continued)
Universal State-Variable Filter
DS007786-11
Tune Q through R0, For predictable results: f
O
Q 4x10
4
Use Band Pass output to tune for Q
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Typical Applications—LM148 (Continued)
A 1 kHz 4 Pole Butterworth
DS007786-12
Use general equations, and tune each section separately Q
1stSECTION
=
0.541, Q
2ndSECTION
=
1.306
The response should have 0 dB peaking
A 3 Amplifier Bi-Quad Notch Filter
DS007786-13
Ex: f
NOTCH
=
3 kHz, Q=5, R1=270k, R2=R3=20k, R4=27k, R5=20k, R6=R8=10k, R7=100k, C1=C2=0.001 µF
Better noise performance than the state-space approach.
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Typical Applications—LM148 (Continued)
A 4th Order 1 kHz Elliptic Filter (4 Poles, 4 Zeros)
DS007786-14
R1C1=R2C2=t R'1C'1=R'2C'2=t' f
C
=
1 kHz, f
S
=
2 kHz, f
p
=
0.543, f
Z
=
2.14, Q=0.841, f'
P
=
0.987, f'
Z
=
4.92, Q'=4.403, normalized to ripple BW
Use the BP outputs to tune Q, Q', tune the 2 sections separately R1=R2=92.6k, R3=R4=R5=100k, R6=10k, R0=107.8k, R
L
=
100k, R
H
=
155.1k,
R'1=R'2=50.9k, R'4=R'5=100k, R'6=10k, R'0=5.78k, R'
L
=
100k, R'
H
=
248.12k, R'f=100k. All capacitors are 0.001 µF.
Lowpass Response
DS007786-15
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Typical Applications—LM149
Minimum Gain to Insure LM149 Stability
DS007786-16
The LM149 as a Unity Gain Inverter
DS007786-17
Non-inverting-Integrator Bandpass Filter
DS007786-18
For stability purposes: R7=R6/4, 10R6=R5, C
C
=
10C
f
O(MAX),QMAX
=
20 kHz, 10 Better Q sensitivity with respect to open loop gain variations than the state variable filter. R7, C
C
added for compensation
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Typical Applications—LM149 (Continued)
Active Tone Control with Full Output Swing (No Slew Limiting at 20 kHz)
DS007786-19
V
S
=
±
15V, V
OUT(MAX)
=
9.1 V
RMS
,
f
MAX
=
20 kHz, THD 1
%
Duplicate the above circuit for stereo
Max Bass Gain≅(R1 + R2)/R1 Max Treble Gain
(R1 + 2R7)/R5
as shown: f
L
32 Hz, f
LB
320 Hz
f
H
11 kHz, f
HB
1.1 Hz
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Typical Applications—LM149 (Continued)
Triangular Squarewave Generator
DS007786-20
Use LM125 for±15V supply The circuit can be used as a low frequency V/F for process control. Q1, Q3: KE4393, Q2, Q4: P1087E, D1–D4=1N914
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Typical Simulation
LM148, LM149, LM741 Macromodel for Computer Simulation
DS007786-21
For more details, see IEEE Journal of Solid-State Circuits, Vol. SC-9, No. 6, December 1974
Note 6:
o1
=
112I
S
=
8x10
−16
Note 7:
o2
=
144
*
C2=6 pF for LM149
DS007786-22
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Connection Diagram
DS007786-2
Top View
Order Number LM148J, LM148J/883, LM149J/883, LM248J, LM348J, LM348M, or LM348N
See NS Package Number J14A, M14A or N14A
LM148J is available per JM38510/11001
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Physical Dimensions inches (millimeters) unless otherwise noted
Ceramic Dual-In-Line Package (J)
Order Number LM148J, LM148J/883, LM149J/883, LM248J or LM348J
NS Package Number J14A
S.O. Package (M)
Order Number LM348M
NS Package Number M14A
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
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NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
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Molded Dual-In-Line Package (N)
Order Number LM348N
NS Package Number N14A
LM148/LM149 Series Quad 741 Op Amp
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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