National Semiconductor LM101A, LM201A, LM301A Technical data

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LM101A/LM201A/LM301A Operational Amplifiers
General Description
The LM101A series are general purpose operational amplifi­ers which feature improved performance over industry stan­dards like the LM709. Advanced processing techniques make possible an order of magnitude reduction in input cur­rents, and a redesign of the biasing circuitry reduces the temperature drift of input current.Improvedspecifications in­clude:
Offset voltage 3 mV maximum over temperature
(LM101A/LM201A) Input current 100 nA maximum over temperature
(LM101A/LM201A) Offset current 20 nA maximum over temperature
(LM101A/LM201A) Guaranteed drift characteristics
Offsets guaranteed over entire common mode and sup-
ply voltage ranges Slew rate of 10V/µs as a summing amplifier
This amplifier offers many features which make its appli­cation nearly foolproof: overload protection on the input
LM101A/LM201A/LM301A Operational Amplifiers
September 1999
and output, no latch-up when the common mode range is exceeded, and freedom from oscillations and compensa­tion with a single 30 pF capacitor. It has advantages over internally compensated amplifiers in that the frequency compensation can be tailored to the particular applica­tion. For example, in low frequency circuits it can be over­compensated for increased stability margin. Or the com­pensation can be optimized to give more than a factor of ten improvement in high frequency performance for most applications.
In addition, the device provides better accuracy and lower noise in high impedance circuitry. The low input currents also make it particularly well suited for long interval inte­grators or timers, sample and hold circuits and low fre­quency waveform generators. Further, replacing circuits where matched transistor pairs buffer the inputs of con­ventional IC op amps, it can give lower offset voltage and a drift at a lower cost.
The LM101A is guaranteed over a temperature range of
−55˚C to +125˚C, the LM201A from −25˚C to +85˚C, and the LM301A from 0˚C to +70˚C.
Connection Diagrams (Top View)
Dual-In-Line Package
DS007752-4
Order Number LM101AJ, LM101J/883 (Note 1),
LM201AN or LM301AN
See NS Package Number J08A or N08E
Ceramic Flatpack Package
DS007752-40
Order Number LM101AW/883 or LM101W/883
See NS Package Number W10A
© 1999 National Semiconductor Corporation DS007752 www.national.com
Connection Diagrams (Top View) (Continued)
Metal Can Package
DS007752-2
Note: Pin 4 connected to case.
Order Number LM101AH, LM101AH/883 (Note 1),
LM201AH or LM301AH
See NS Package Number H08C
Note 1: Available per JM38510/10103.
Dual-In-Line Package
DS007752-3
Order Number LM101AJ-14/883 (Note 1)
See NS Package Number J14A
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Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
LM101A/LM201A LM301A
Supply Voltage Differential Input Voltage Input Voltage (Note 3)
±
22V
±
30V
±
15V Output Short Circuit Duration (Note 4) Continuous Continuous Operating Ambient Temp. Range −55˚C to +125˚C (LM101A) 0˚C to +70˚C
−25˚C to +85˚C (LM201A)
T
Max
J
H-Package 150˚C 100˚C N-Package 150˚C 100˚C J-Package 150˚C 100˚C
Power Dissipation at T
=
25˚C
A
H-Package (Still Air) 500 mW 300 mW
(400 LF/Min Air Flow) 1200 mW 700 mW N-Package 900 mW 500 mW J-Package 1000 mW 650 mW
Thermal Resistance (Typical) θ
jA
H-Package (Still Air) 165˚C/W 165˚C/W
(400 LF/Min Air Flow) 67˚C/W 67˚C/W N Package 135˚C/W 135˚C/W J-Package 110˚C/W 110˚CmW
(Typical) θ
jC
H-Package 25˚C/W 25˚C/W
Storage Temperature Range −65˚C to +150˚C −65˚C to +150˚C Lead Temperature (Soldering, 10 sec.)
Metal Can or Ceramic 300˚C 300˚C Plastic 260˚C 260˚C
ESD Tolerance (Note 7) 2000V 2000V
±
18V
±
30V
±
15V
Electrical Characteristics (Note 5)
=
T
T
A
J
Parameter Conditions LM101A/LM201A LM301A Units
Min Typ Max Min Typ Max
Input Offset Voltage T Input Offset Current T Input Bias Current T Input Resistance T Supply Current T
Large Signal Voltage Gain T
Input Offset Voltage R Average Temperature Coefficient R
=
25˚C, R
A
=
25˚C 1.5 10 3.0 50 nA
A
=
25˚C 30 75 70 250 nA
A
=
25˚C 1.5 4.0 0.5 2.0 M
A
=
25˚C V
A
=
25˚C, V
A
V
OUT
50 k 3.0 10 mV
S
50 k 3.0 15 6.0 30 µV/˚C
S
of Input Offset Voltage Input Offset Current 20 70 nA Average Temperature Coefficient 25˚C T of Input Offset Current T
TA≤ 25˚C 0.02 0.2 0.02 0.6 nA/˚C
MIN
Input Bias Current 0.1 0.3 µA Supply Current T
=
T
A
50 k 0.7 2.0 2.0 7.5 mV
S
=
±
20V 1.8 3.0 mA
S
=
±
V
15V 1.8 3.0 mA
=
S
=
±
10V, RL≥ 2k
T
A
MAX
=
MAX,VS
S
±
15V 50 160 25 160 V/mV
0.01 0.1 0.01 0.3 nA/˚C
±
20V 1.2 2.5 mA
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Electrical Characteristics (Note 5) (Continued)
=
T
T
A
J
Parameter Conditions LM101A/LM201A LM301A Units
Min Typ Max Min Typ Max
=
±
Large Signal Voltage Gain V
Output Voltage Swing V
Input Voltage Range V
Common-Mode Rejection Ratio R Supply Voltage Rejection Ratio R
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.Operating ratings indicate for which the device is functional, but do no guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guarantee spe­cific limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however,thetypical value is a good indication of device performance.
Note 3: For supply voltages less than Note 4: Continuous short circuit is allowed for case temperatures to 125˚C and ambient temperatures to 75˚C for LM101A/LM201A, and 70˚C and 55˚C respectively
for LM301A. Note 5: Unless otherwise specified, these specifications apply for C1=30 pF,
+85˚C (LM201A),±5V ≤ VS≤±15V and 0˚C ≤ TA≤ +70˚C (LM301A).
T
A
Note 6: Refer to RETS101AX for LM101A military specifications and RETS101X for LM101 military specifications. Note 7: Human body model, 100 pF discharged through 1.5 k.
±
15V, V
S
R
2k
L
=
±
15V R
S
=
±
20V
S
=
±
V
15V +15,
S
50 k 80 96 70 90 dB
S
50 k 80 96 70 96 dB
S
15V, the absolute maximum input voltage is equal to the supply voltage.
=
±
10V 25 15 V/mV
OUT
=
10 k
L
=
R
2k
L
±
5V VS≤±20V and −55˚C TA≤ +125˚C (LM101A),±5V VS≤±20V and −25˚C
±
12±14
±10± ±
13
15 V
−13
±
12±14 V
±
10±13 V
±
12 +15,
−13
Guaranteed Performance Characteristics LM101A/LM201A
V
Input Voltage Range
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Output Swing
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Guaranteed Performance Characteristics LM301A
Input Voltage Range
DS007752-44
Output Swing
DS007752-45
Voltage Gain
DS007752-43
Voltage Gain
DS007752-46
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Typical Performance Characteristics
Supply Current
Input Current, LM101A/LM201A/LM301A
Input Noise Current
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Voltage Gain
Current Limiting
Common Mode Rejection
DS007752-48
DS007752-51
Maximum Power Dissipation
DS007752-49
Input Noise Voltage
DS007752-52
Power Supply Rejection
DS007752-53
DS007752-54
DS007752-55
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Typical Performance Characteristics (Continued)
Closed Loop Output Impedance
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Typical Performance Characteristics for Various Compensation Circuits
(Note 9)
CS=30pF
Single Pole Compensation
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Feedforward Compensation
CS=30pF C2=10C1
DS007752-16
Two Pole Compensation
DS007752-12
=
f
3 MHz
o
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Typical Performance Characteristics for Various Compensation Circuits
(Note 9) (Continued)
Open Loop Frequency Response
Large Signal Frequency Response
Voltage Follower Pulse Response
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DS007752-10
Open Loop Frequency Response
Large Signal Frequency Response
Voltage Follower Pulse Response
DS007752-13
DS007752-14
Open Loop Frequency Response
DS007752-17
Large Signal Frequency Response
DS007752-18
Inverter Pulse Response
DS007752-11
DS007752-15
DS007752-19
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Typical Applications (Note 9)
Variable Capacitance Multiplier
Fast Inverting Amplifier
with High Input Impedance
DS007752-20
L≅R1 R2 C1
=
R2
R
S
=
R1
R
P
Simulated Inductor
DS007752-21
Inverting Amplifier
with Balancing Circuit
DS007752-22
Sine Wave Oscillator
=
f
10 kHz
o
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May be zero or equal to parallel combination of R1 and R2 for minimum
offset.
DS007752-24
DS007752-23
Typical Applications (Note 9) (Continued)
Integrator with Bias Current Compensation
*
Adjust for zero integrator drift. Current drift typically 0.1 nA/˚C over −55˚C to +125˚C temperature range.
DS007752-25
Application Hints (Note 9)
Protecting Against Gross
Fault Conditions
*
Protects input
Protects output
Protects output — not needed when R4 is used.
DS007752-26
Isolating Large Capacitive Loads
Compensating for Stray Input Capacitances
or Large Feedback Resistor
DS007752-27
Although the LM101A is designed for trouble free operation, experience has indicated that it is wise to observe certain precautions given below to protect the devices from abnor­mal operating conditions. It might be pointed out that the ad-
DS007752-28
vice given here is applicable to practically any IC op amp, al­though the exact reason why may differ with different devices.
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Application Hints (Note 9) (Continued)
When driving either input from a low-impedance source, a limiting resistor should be placed in series with the input lead to limit the peak instantaneous output current of the source to something less than 100 mA. This is especially important when the inputs go outside a piece of equipment where they could accidentally be connected to high voltage sources. Large capacitors on the input (greater than 0.1 µF) should be treated as a low source impedance and isolated with a resis­tor. Low impedance sources do not cause a problem unless their output voltage exceeds the supply voltage. However, the supplies go to zero when they are turned off, so the iso­lation is usually needed.
The output circuitry is protected against damage from shorts to ground. However, when the amplifier output is connected to a test point, it should be isolated by a limiting resistor, as test points frequently get shorted to bad places. Further, when the amplifer drives a load external to the equipment, it is also advisable to use some sort of limiting resistance to preclude mishaps.
Precautions should be taken to insure that the power sup­plies for the integrated circuit never become reversed—even under transient conditions. With reverse voltages greater than 1V, the IC will conduct excessive cur-
Typical Applications (Note 9)
rent, fusing internal aluminum interconnects. If there is a possibility of this happening, clamp diodes with a high peak current rating should be installed on the supply lines. Rever­sal of the voltage between V
+
and V−will always cause a problem, although reversals with respect to ground may also give difficulties in many circuits.
The minimum values given for the frequency compensation capacitor are stable only for source resistances less than 10 k, stray capacitances on the summing junction less than 5 pF and capacitive loads smaller than 100 pF. If any of these conditions are not met, it becomes necessary to over­compensate the amplifier with a larger compensation capaci­tor.Alternately, lead capacitors can be used in the feedback network to negate the effect of stray capacitance and large feedback resistors or an RC network can be added to isolate capacitive loads.
Although the LM101A is relatively unaffected by supply by­passing, this cannot be ignored altogether. Generally it is necessary to bypass the supplies to ground at least once on every circuit card, and more bypass points may be required if more than five amplifiers are used. When feed-forward compensation is employed, however, it is advisable to by­pass the supply leads of each amplifier with low inductance capacitors because of the higher frequencies involved.
Standard Compensation and
Offset Balancing Circuit
DS007752-29
Power Bandwidth: 15 kHz Slew Rate: 1V/µs
Fast Voltage Follower
DS007752-31
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Typical Applications (Note 9) (Continued)
Fast Summing Amplifier
Power Bandwidth: 250 kHz Small Signal Bandwiidth: 3.5 MHz Slew Rate: 10V/µs
DS007752-30
R3=R4+R5 R1=R2
Fast AC/DC Converter (Note 8)
Bilateral Current Source
DS007752-32
Note 8: Feedforward compensation can be used to make a fast full wave rectifier without a filter.
DS007752-33
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Typical Applications (Note 9) (Continued)
Instrumentation Amplifier
R1=R4; R2=R3
*
,†Matching determines CMRR.
Integrator with Bias Current Compensation
*
Adjust for zero integrator drift. Current drift typically 0.1 nA/˚C over 0˚C to
+70˚C temperature range.
DS007752-35
DS007752-34
Voltage Comparator for Driving RTL Logic or High
Current Driver
DS007752-37
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Typical Applications (Note 9) (Continued)
Low Frequency Square Wave Generator
DS007752-36
Low Drift Sample and Hold
*
Polycarbonate-dielectric capacitor
Voltage Comparator for Driving
DTL or TTL Integrated Circuits
DS007752-39
DS007752-38
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Schematic (Note 9)
Note 9: Pin connections shown are for 8-pin packages.
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DS007752-1
Physical Dimensions inches (millimeters) unless otherwise noted
Metal Can Package (H)
Order Number LM101AH, LM101AH/883
LM201AH or LM301AH
NS Package Number H08C
Ceramic Dual-In-Line Package (J)
Order Number LM101J/883 or LM101AJ
NS Package Number J08A
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Ceramic Dual-In-Line Package (J)
Order Number LM101AJ-14/883
NS Package Number J14A
Molded Dual-In-Line Package (N)
Order Number LM201AN or LM301AN
NS Package Number N08E
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Ceramic Flatpack Package (W)
Order Number LM101AW/883 or LM101W/883
NS Package Number W10A
LM101A/LM201A/LM301A Operational Amplifiers
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