NSC LMC6081IN, LMC6081IM, LMC6081AIN, LMC6081AIMX, LMC6081AIM Datasheet
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LMC6081
Precision CMOS Single Operational Amplifier
General Description
The LMC6081 is a precision low offset voltage operational
amplifier, capable of single supply operation. Performance
characteristics includeultra low input bias current, high voltage gain, rail-to-rail output swing, and an input common
mode voltage range that includes ground. These features,
plus its low offset voltage, make the LMC6081 ideally suited
for precision circuit applications.
Other applications using the LMC6081 include precision
full-wave rectifiers, integrators, references, and
sample-and-hold circuits.
This device is built with National’s advanced Double-Poly
Silicon-Gate CMOS process.
For designs with more critical power demands, see the
LMC6061 precision micropower operational amplifier.
For a dual orquad operational amplifier with similarfeatures,
see the LMC6082 or LMC6084 respectively.
PATENT PENDING
Features
(Typical unless otherwise stated)
n Low offset voltage: 150 µV
n Operates from 4.5V to 15V single supply
n Ultra low input bias current: 10 fA
n Output swing to within 20 mV of supply rail, 100k load
n Input common-mode range includes V
−
n High voltage gain: 130 dB
n Improved latchup immunity
Applications
n Instrumentation amplifier
n Photodiode and infrared detector preamplifier
n Transducer amplifiers
n Medical instrumentation
n D/A converter
n Charge amplifier for piezoelectric transducers
Connection Diagram
Ordering Information
Package Temperature Range NSC
Drawing
Transport
Media
Military Industrial
−55˚C to +125˚C −40˚C to +85˚C
8-Pin LMC6081AMN LMC6081AIN N08E Rail
Molded DIP LMC6081IN
8-Pin LMC6081AIM M08A Rail
Small Outline LMC6081IM Tape and Reel
8-Pin DIP/SO
DS011423-1
Top View
November 1994
LMC6081 Precision CMOS Single Operational Amplifier
© 1999 National Semiconductor Corporation DS011423 www.national.com
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the NationalSemiconductorSales Office/
Distributors for availability and specifications.
Differential Input Voltage
±
Supply Voltage
Voltage at Input/Output Pin (V
+
) +0.3V,
(V
−
) −0.3V
Supply Voltage (V
+−V−
) 16V
Output Short Circuit to V
+
(Note 10)
Output Short Circuit to V
−
(Note 2)
Lead Temperature
(Soldering, 10 Sec.) 260˚C
Storage Temp. Range −65˚C to +150˚C
Junction Temperature 150˚C
ESD Tolerance (Note 4) 2 kV
Current at Input Pin
±
10 mA
Current at Output Pin
±
30 mA
Current at Power Supply Pin 40 mA
Power Dissipation (Note 3)
Operating Ratings (Note 1)
Temperature Range
LMC6081AM −55˚C ≤ T
J
≤ +125˚C
LMC6081AI, LMC6081I −40˚C ≤ T
J
≤ +85˚C
Supply Voltage 4.5V ≤ V
+
≤ 15.5V
Thermal Resistance (θ
JA
), (Note 11)
N Package, 8-Pin Molded DIP 115˚C/W
M Package, 8-Pin Surface Mount 193˚C/W
Power Dissipation (Note 9)
DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
=
25˚C. Boldface limits apply at the temperature extremes. V
+
=
5V, V
−
=
0V, V
CM
=
1.5V, V
O
=
2.5V and R
L
>
1M unless otherwise specified.
Typ LMC6081AM LMC6081AI LMC6081I
Symbol Parameter Conditions (Note 5) Limit Limit Limit Units
(Note 6) (Note 6) (Note 6)
V
OS
Input Offset Voltage 150 350 350 800 µV
1000 800 1300 Max
TCV
OS
Input Offset Voltage 1.0 µV/˚C
Average Drift
I
B
Input Bias Current 0.010 pA
100 4 4 Max
I
OS
Input Offset Current 0.005 pA
100 2 2 Max
R
IN
Input Resistance
>
10 Tera Ω
CMRR Common Mode 0V ≤ V
CM
≤ 12.0V 85 75 75 66 dB
Rejection Ratio V
+
=
15V 72 72 63 Min
+PSRR Positive Power Supply 5V ≤ V
+
≤ 15V 85 75 75 66 dB
Rejection Ratio V
O
=
2.5V 72 72 63 Min
−PSRR Negative Power Supply 0V ≤ V
−
≤ −10V 94 84 84 74 dB
Rejection Ratio 81 81 71 Min
V
CM
Input Common-Mode V
+
=
5V and 15V −0.4 −0.1 −0.1 −0.1 V
Voltage Range for CMRR ≥ 60 dB 000Max
V
+
− 1.9 V+− 2.3 V+− 2.3 V+− 2.3 V
V
+
− 2.6 V+− 2.5 V+− 2.5 Min
A
V
Large Signal R
L
=
2kΩ Sourcing 1400 400 400 300 V/mV
Voltage Gain (Note 7) 300 300 200 Min
Sinking 350 180 180 90 V/mV
70 100 60 Min
R
L
=
600Ω Sourcing 1200 400 400 200 V/mV
(Note 7) 150 150 80 Min
Sinking 150 100 100 70 V/mV
35 50 35 Min
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DC Electrical Characteristics (Continued)
Unless otherwise specified, all limits guaranteed for T
J
=
25˚C. Boldface limits apply at the temperature extremes. V
+
=
5V, V
−
=
0V, V
CM
=
1.5V, V
O
=
2.5V and R
L
>
1M unless otherwise specified.
Typ LMC6081AM LMC6081AI LMC6081I
Symbol Parameter Conditions (Note 5) Limit Limit Limit Units
(Note 6) (Note 6) (Note 6)
V
O
Output Swing V
+
=
5V 4.87 4.80 4.80 4.75 V
R
L
=
2kΩto 2.5V 4.70 4.73 4.67 Min
0.10 0.13 0.13 0.20 V
0.19 0.17 0.24 Max
V
+
=
5V 4.61 4.50 4.50 4.40 V
R
L
=
600Ω to 2.5V 4.24 4.31 4.21 Min
0.30 0.40 0.40 0.50 V
0.63 0.50 0.63 Max
V
+
=
15V 14.63 14.50 14.50 14.37 V
R
L
=
2kΩto 7.5V 14.30 14.34 14.25 Min
0.26 0.35 0.35 0.44 V
0.48 0.45 0.56 Max
V
+
=
15V 13.90 13.35 13.35 12.92 V
R
L
=
600Ω to 7.5V 12.80 12.86 12.44 Min
0.79 1.16 1.16 1.33 V
1.42 1.32 1.58 Max
I
O
Output Current Sourcing, V
O
=
0V 22 16 16 13 mA
V
+
=
5V 8108Min
Sinking, V
O
=
5V 21 16 16 13 mA
11 13 10 Min
I
O
Output Current Sourcing, V
O
=
0V 30 28 28 23 mA
V
+
=
15V 18 22 18 Min
Sinking, V
O
=
13V 34 28 28 23 mA
(Note 10) 19 22 18 Min
I
S
Supply Current V
+
=
+5V, V
O
=
1.5V 450 750 750 750 µA
900 900 900 Max
V
+
=
+15V, V
O
=
7.5V 550 850 850 850 µA
950 950 950 Max
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AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
=
25˚C, Boldface limits apply at the temperature extremes. V
+
=
5V, V
−
=
0V, V
CM
=
1.5V, V
O
=
2.5V and R
L
>
1M unless otherwise specified.
Typ LMC6081AM LMC6081AI LMC6081
Symbol Parameter Conditions (Note 5) Limit Limit Limit Units
(Note 6) (Note 6) (Note 6)
SR Slew Rate (Note 8) 1.5 0.8 0.8 0.8 V/µs
0.5 0.6 0.6 Min
GBW Gain-Bandwidth Product 1.3 MHz
φ
m
Phase Margin 50 Deg
e
n
Input-Referred
Voltage Noise
F=1 kHz 22
i
n
Input-Referred
Current Noise
F=1 kHz 0.0002
T.H.D. Total Harmonic Distortion F=10 kHz, A
V
=
−10
R
L
=
2kΩ,V
O
=
8V
PP
0.01
%
±
5V Supply
Note 1: Absolute Maximum Ratings indicatelimits beyond which damage to the device may occur. Operating Ratings indicate conditions for whichthe device is intended to be functional, but do not guarantee specific performance limits. For guaranteedspecifications and test conditions, see the Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed.
Note 2: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the
maximum allowed junction temperature of 150˚C. Output currents in excess of
±
30 mA over long term may adversely affect reliability.
Note 3: The maximum power dissipation is a functionofT
J(Max)
, θJA, andTA. Themaximumallowablepowerdissipationat any ambient temperature is P
D
=
(T
J(Max)
−TA)/θJA.
Note 4: Human body model, 1.5 kΩ in series with 100 pF.
Note 5: Typical values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: V
+
=
15V, V
CM
=
7.5V and R
L
connected to 7.5V. For Sourcing tests, 7.5V ≤ VO≤ 11.5V. For Sinking tests, 2.5V ≤ VO≤ 7.5V.
Note 8: V
+
=
15V. Connected as Voltage Follower with 10V step input. Number specified is the slower of the positive and negative slew rates.
Note 9: For operating at elevated temperatures the device must be derated based on the thermal resistance θ
JA
with P
D
=
(T
J−TA
)/θJA.
Note 10: Do not connect output to V
+
, when V+is greater than 13V or reliability will be adversely affected.
Note 11: All numbers apply for packages soldered directly into a PC board.
Typical Performance Characteristics V
S
=
±
7.5V, T
A
=
25˚C, Unless otherwise specified
Distribution of LMC6081
Input Offset Voltage
(T
A
=
+25˚C)
DS011423-15
Distribution of LMC6081
Input Offset Voltage
(T
A
=
−55˚C)
DS011423-16
Distribution of LMC6081
Input Offset Voltage
(T
A
=
+125˚C)
DS011423-17
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