LM101AW/883 [NSC]
Operational Amplifiers; 运算放大器
| 型号： | LM101AW/883 |
| 厂家： | 
National Semiconductor |
| 描述： | Operational Amplifiers |
| 文件： | 总17页 (文件大小：511K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
September 1999
LM101A/LM201A/LM301A
Operational Amplifiers
and output, no latch-up when the common mode range is
exceeded, and freedom from oscillations and compensa-
tion with a single 30 pF capacitor. It has advantages over
internally compensated amplifiers in that the frequency
compensation can be tailored to the particular applica-
tion. For example, in low frequency circuits it can be over-
compensated for increased stability margin. Or the com-
pensation can be optimized to give more than a factor of
ten improvement in high frequency performance for most
applications.
General Description
The LM101A series are general purpose operational amplifi-
ers which feature improved performance over industry stan-
dards like the LM709. Advanced processing techniques
make possible an order of magnitude reduction in input cur-
rents, and a redesign of the biasing circuitry reduces the
temperature drift of input current. Improved specifications in-
clude:
•
•
•
Offset voltage
(LM101A/LM201A)
3 mV maximum over temperature
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 inte-
grators or timers, sample and hold circuits and low fre-
quency waveform generators. Further, replacing circuits
where matched transistor pairs buffer the inputs of con-
ventional IC op amps, it can give lower offset voltage and
a drift at a lower cost.
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
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.
•
Slew rate of 10V/µs as a summing amplifier
This amplifier offers many features which make its appli-
cation nearly foolproof: overload protection on the input
Connection Diagrams (Top View)
Dual-In-Line Package
Ceramic Flatpack Package
DS007752-4
DS007752-40
Order Number LM101AJ, LM101J/883 (Note 1),
LM201AN or LM301AN
Order Number LM101AW/883 or LM101W/883
See NS Package Number W10A
See NS Package Number J08A or N08E
© 1999 National Semiconductor Corporation
DS007752
www.national.com
Connection Diagrams (Top View) (Continued)
Metal Can Package
Dual-In-Line Package
DS007752-2
DS007752-3
Note: Pin 4 connected to case.
Order Number LM101AJ-14/883 (Note 1)
Order Number LM101AH, LM101AH/883 (Note 1),
LM201AH or LM301AH
See NS Package Number J14A
See NS Package Number H08C
Note 1: Available per JM38510/10103.
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2
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
22V
30V
15V
18V
30V
15V
Differential Input Voltage
Input Voltage (Note 3)
Output Short Circuit Duration (Note 4)
Operating Ambient Temp. Range
Continuous
Continuous
−55˚C to +125˚C (LM101A)
−25˚C to +85˚C (LM201A)
0˚C to +70˚C
TJ Max
H-Package
N-Package
J-Package
150˚C
150˚C
150˚C
100˚C
100˚C
100˚C
=
Power Dissipation at TA 25˚C
H-Package (Still Air)
(400 LF/Min Air Flow)
N-Package
500 mW
1200 mW
900 mW
300 mW
700 mW
500 mW
650 mW
J-Package
1000 mW
Thermal Resistance (Typical) θjA
H-Package (Still Air)
(400 LF/Min Air Flow)
N Package
165˚C/W
67˚C/W
165˚C/W
67˚C/W
135˚C/W
110˚C/W
135˚C/W
110˚CmW
J-Package
(Typical) θjC
H-Package
25˚C/W
25˚C/W
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
Metal Can or Ceramic
Plastic
−65˚C to +150˚C
−65˚C to +150˚C
300˚C
260˚C
2000V
300˚C
260˚C
2000V
ESD Tolerance (Note 7)
Electrical Characteristics (Note 5)
=
TA TJ
Parameter
Conditions
LM101A/LM201A
LM301A
Units
Min
Typ
0.7
1.5
30
Max Min
Typ
2.0
3.0
70
Max
7.5
50
=
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Resistance
Supply Current
TA 25˚C, RS ≤ 50 kΩ
2.0
10
mV
nA
=
TA 25˚C
=
TA 25˚C
75
250
nA
=
TA 25˚C
1.5
50
4.0
1.8
0.5
3.0
2.0
MΩ
mA
mA
V/mV
=
=
=
±
±
TA 25˚C
VS
VS
20V
15V
1.8
3.0
=
=
±
Large Signal Voltage Gain
TA 25˚C, VS
15V
160
3.0
25
160
=
±
VOUT
10V, RL ≥ 2 kΩ
Input Offset Voltage
RS ≤ 50 kΩ
3.0
15
10
30
mV
Average Temperature Coefficient RS ≤ 50 kΩ
of Input Offset Voltage
6.0
µV/˚C
Input Offset Current
20
0.1
0.2
0.1
2.5
70
0.3
0.6
0.3
nA
nA/˚C
nA/˚C
µA
Average Temperature Coefficient 25˚C ≤ TA ≤ TMAX
0.01
0.02
0.01
0.02
of Input Offset Current
Input Bias Current
Supply Current
TMIN ≤ TA ≤ 25˚C
=
=
±
TA TMAX, VS
20V
1.2
mA
3
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Electrical Characteristics (Note 5) (Continued)
=
TA TJ
Parameter
Conditions
LM101A/LM201A
Min Typ Max Min
25 15
LM301A
Typ
Units
Max
=
=
±
±
Large Signal Voltage Gain
Output Voltage Swing
Input Voltage Range
VS
15V, VOUT
15V
10V
V/mV
RL ≥ 2k
=
=
±
±
±
±
±
±
±
VS
RL 10 kΩ
12
10
15
14
13
12
10
14
13
V
V
V
V
=
±
±
±
RL 2 kΩ
=
=
±
±
VS
VS
20V
15V
±
+15,
−13
12
+15,
−13
Common-Mode Rejection Ratio
Supply Voltage Rejection Ratio
RS ≤ 50 kΩ
RS ≤ 50 kΩ
80
80
96
96
70
70
90
96
dB
dB
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 spe-
cific limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical
value is a good indication of device performance.
±
Note 3: For supply voltages less than 15V, the absolute maximum input voltage is equal to the supply voltage.
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.
=
±
±
±
±
≤ 20V and −25˚C
Note 5: Unless otherwise specified, these specifications apply for C1 30 pF, 5V ≤ V
≤
20V and −55˚C ≤ T ≤ +125˚C (LM101A), 5V ≤ V
S
A
S
±
±
15V and 0˚C ≤ T ≤ +70˚C (LM301A).
≤ T ≤ +85˚C (LM201A), 5V ≤ V
≤
A
S
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 kΩ.
Guaranteed Performance Characteristics LM101A/LM201A
Input Voltage Range
Output Swing
Voltage Gain
DS007752-43
DS007752-42
DS007752-41
Guaranteed Performance Characteristics LM301A
Input Voltage Range
Output Swing
Voltage Gain
DS007752-46
DS007752-45
DS007752-44
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4
Typical Performance Characteristics
Supply Current
Voltage Gain
Maximum Power Dissipation
DS007752-47
DS007752-48
DS007752-49
Input Current,
Input Noise Voltage
Current Limiting
LM101A/LM201A/LM301A
DS007752-51
DS007752-52
DS007752-50
Input Noise Current
Common Mode Rejection
Power Supply Rejection
DS007752-55
DS007752-53
DS007752-54
5
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Typical Performance Characteristics (Continued)
Closed Loop Output
Impedance
DS007752-56
Typical Performance Characteristics for Various Compensation Circuits
(Note 9)
Single Pole Compensation
Two Pole Compensation
DS007752-8
DS007752-12
C
= 30 pF
S
C
S
= 30 pF
C2 = 10 C1
Feedforward Compensation
DS007752-16
=
f
3 MHz
o
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6
Typical Performance Characteristics for Various Compensation Circuits
(Note 9) (Continued)
Open Loop Frequency
Response
Open Loop Frequency
Response
Open Loop Frequency
Response
DS007752-9
DS007752-17
DS007752-13
Large Signal Frequency
Response
Large Signal Frequency
Response
Large Signal Frequency
Response
DS007752-18
DS007752-10
DS007752-14
Voltage Follower Pulse
Response
Voltage Follower Pulse
Response
Inverter Pulse Response
DS007752-19
DS007752-11
DS007752-15
7
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Typical Applications (Note 9)
Variable Capacitance Multiplier
Simulated Inductor
DS007752-20
DS007752-21
L
R1 R2 C1
=
=
R
R
R2
R1
S
P
Fast Inverting Amplifier
Inverting Amplifier
with High Input Impedance
with Balancing Circuit
DS007752-23
DS007752-22
†
May be zero or equal to parallel combination of R1 and R2 for minimum
offset.
Sine Wave Oscillator
DS007752-24
=
f
10 kHz
o
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8
Typical Applications (Note 9) (Continued)
Integrator with Bias Current Compensation
DS007752-25
*
Adjust for zero integrator drift. Current drift typically 0.1 nA/˚C over −55˚C to +125˚C temperature range.
Application Hints (Note 9)
Protecting Against Gross
Fault Conditions
Compensating for Stray Input Capacitances
or Large Feedback Resistor
DS007752-26
DS007752-27
*
†
‡
Protects input
Protects output
Protects output — not needed when R4 is used.
Isolating Large Capacitive Loads
DS007752-28
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 abnor-
mal operating conditions. It might be pointed out that the ad-
vice given here is applicable to practically any IC op amp, al-
though the exact reason why may differ with different
devices.
9
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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. Rever-
sal 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.
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 resis-
tor. 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 iso-
lation is usually needed.
The minimum values given for the frequency compensation
capacitor are stable only for source resistances less than
10 kΩ, 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 over-
compensate the amplifier with a larger compensation capaci-
tor. 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.
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.
Although the LM101A is relatively unaffected by supply by-
passing, 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 by-
pass the supply leads of each amplifier with low inductance
capacitors because of the higher frequencies involved.
Precautions should be taken to insure that the power sup-
plies 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)
Standard Compensation and
Offset Balancing Circuit
Fast Voltage Follower
DS007752-31
Power Bandwidth: 15 kHz
Slew Rate: 1V/µs
DS007752-29
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10
Typical Applications (Note 9) (Continued)
Fast Summing Amplifier
Bilateral Current Source
DS007752-30
Power Bandwidth: 250 kHz
Small Signal Bandwiidth: 3.5 MHz
Slew Rate: 10V/µs
DS007752-32
=
R3 R4 + R5
=
R1 R2
Fast AC/DC Converter (Note 8)
DS007752-33
Note 8: Feedforward compensation can be used to make a fast full wave rectifier without a filter.
11
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Typical Applications (Note 9) (Continued)
Instrumentation Amplifier
DS007752-34
=
=
R1 R4; R2 R3
†
*
,
Matching determines CMRR.
Integrator with Bias Current Compensation
Voltage Comparator for Driving RTL Logic or High
Current Driver
DS007752-37
DS007752-35
*
Adjust for zero integrator drift. Current drift typically 0.1 nA/˚C over 0˚C to
+70˚C temperature range.
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12
Typical Applications (Note 9) (Continued)
Low Frequency Square Wave Generator
DS007752-36
Low Drift Sample and Hold
Voltage Comparator for Driving
DTL or TTL Integrated Circuits
DS007752-39
DS007752-38
*
Polycarbonate-dielectric capacitor
13
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Schematic (Note 9)
DS007752-1
Note 9: Pin connections shown are for 8-pin packages.
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14
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
15
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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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16
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
Ceramic Flatpack Package (W)
Order Number LM101AW/883 or LM101W/883
NS Package Number W10A
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accordance with instructions for use provided in the
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significant injury to the user.
2. A critical component is any component of a life
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can be reasonably expected to cause the failure of
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