LMC6041.pdf
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LMC6041 CMOS Single Micropower Operational Amplifier
February 1995
LMC6041
CMOS Single Micropower Operational Amplifier
General Description
Ultra-low power consumption and low input-leakage current
are the hallmarks of the LMC6041. Providing input currents
of only 2 fA typical, the LMC6041 can operate from a single
supply, has output swing extending to each supply rail, and
an input voltage range that includes ground.
The LMC6041 is ideal for use in systems requiring ultra-low
power consumption. In addition, the insensitivity to latch-up,
high output drive, and output swing to ground without requir-
ing external pull-down resistors make it ideal for single-sup-
ply battery-powered systems.
Other applications for the LMC6041 include bar code reader
amplifiers, magnetic and electric field detectors, and hand-
held electrometers.
This device is built with National's advanced Double-Poly
Silicon-Gate CMOS process.
See the LMC6042 for a dual, and the LMC6044 for a quad
amplifier with these features.
Features
Y
Low supply current
14
m
A (Typ)
Y
Operates from 4.5V to 15.5V single supply
Y
Ultra low input current
2 fA (Typ)
Y
Rail-to-rail output swing
Y
Input common-mode range includes ground
Applications
Y
Battery monitoring and power conditioning
Y
Photodiode and infrared detector preamplifier
Y
Silicon based transducer systems
Y
Hand-held analytic instruments
Y
pH probe buffer amplifier
Y
Fire and smoke detection systems
Y
Charge amplifier for piezoelectric transducers
Connection Diagram
8-Pin DIP/SO
TL/H/11136±1
Ordering Information
Temperature Range
NSC
Transport
Media
Package
Industrial
Drawing
b
40
§
Cto
a
85
§
C
8-Pin
LMC6041AIM
M08A
Rail
Small Outline LMC6041IM
Tape and Reel
8-Pin
LMC6041AIN
N08E
Rail
Molded DIP LM6041IN
C
1995 National Semiconductor Corporation
TL/H/11136
RRD-B30M75/Printed in U. S. A.
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Differential Input Voltage
g
Supply Voltage
Current at Power Supply Pin 35 mA
Voltage at Input/Output Pin (V
a
)
a
0.3V, (V
b
)
b
0.3V
Power Dissipation
(Note 3)
Supply Voltage (V
a
b
V
b
)
16V
Operating Ratings
Temperature Range
LMC6041AI, LMC6041I
Output Short Circuit to V
b
(Note 2)
Output Short Circuit to V
a
(Note 11)
b
40
§
C
s
T
J
s a
85
§
C
Lead Temperature (Soldering, 10 sec.)
260
§
C
Supply Voltage
4.5V
s
V
a
s
15.5V
Storage Temperature Range
b
65
§
Cto
a
150
§
C
Power Dissipation
(Note 9)
Junction Temperature
110
§
C
Thermal Resistance (
i
JA
) (Note 10)
8-Pin DIP
101
§
C/W
ESD Tolerance (Note 4)
500V
8-Pin SO
165
§
C/W
Current at Input Pin
g
5mA
Current at Output Pin
g
18 mA
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
A
e
T
J
e
25
§
C. Boldface limits apply at the temperature extremes.
V
a
e
5V, V
b
e
0V, V
CM
e
1.5V, V
O
e
V
a
/2, and R
L
l
1M unless otherwise specified.
Typical
LMC6041AI LMC6041I
Units
Symbol
Parameter
Conditions
(Note 5)
Limit
Limit
(Limit)
(Note 6)
(Note 6)
V
OS
Input Offset Voltage
1
3
6
mV
3.3
6.3
max
TCV
OS
Input Offset Voltage
1.3
m
V/
§
C
Average Drift
I
B
Input Bias Current
0.002
4
4
pA
max
I
OS
Input Offset Current
0.001
2
2
pA
max
R
IN
Input Resistance
l
10
Tera
X
CMRR Common Mode
0V
s
V
CM
s
12.0V
75
68
62
dB
Rejection Ratio
V
a
e
15V
66
60
min
a
PSRR Positive Power Supply 5V
s
V
a
s
15V
75
68
62
dB
Rejection Ratio
V
O
e
2.5V
66
60
min
b
PSRR Negative Power Supply 0V
s
V
b
s b
10V
94
84
74
dB
Rejection Ratio
V
O
e
2.5V
83
73
min
CMR Input Common-Mode V
a
e
5V and 15V
b
0.4
b
0.1
b
0.1
V
Voltage Range
for CMRR
t
50 dB
0 0 max
V
a
b
1.9V V
a
b
2.3V V
a
b
2.3V V
V
a
b
2.5V V
a
b
2.4V min
A
V
Large Signal
R
L
e
100 k
X
(Note 7) Sourcing
1000
400
300
V/mV
Voltage Gain
300
200 min
Sinking
500
180
90
V/mV
120
70
min
R
L
e
25 k
X
(Note 7) Sourcing
1000
200
100
V/mV
160
80
min
Sinking
250
100
50
V/mV
60
40
min
2
Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
A
e
T
J
e
25
§
C. Boldface limits apply at the temperature extremes.
V
a
e
5V, V
b
e
0V, V
CM
e
1.5V, V
O
e
V
a
/2, and R
L
l
1M unless otherwise specified.
Typical
LMC6041AI LMC6041I
Units
Symbol
Parameter
Conditions
(Note 5)
Limit
Limit
(Limit)
(Note 6)
(Note 6)
V
O
Output Swing
V
a
e
5V
4.987
4.970
4.940
V
R
L
e
100 k
X
to V
a
/2
4.950
4.910
min
0.004
0.030
0.060
V
0.050
0.090
max
V
a
e
5V
4.980
4.920
4.870
V
R
L
e
25 k
X
to V
a
/2
4.870
4.820
min
0.010
0.080
0.130
V
0.130
0.180
max
V
a
e
15V
14.970
14.920
14.880
V
R
L
e
100 k
X
to V
a
/2
14.880
14.820
min
0.007
0.030
0.060
V
0.050
0.090
max
V
a
e
15V
14.950
14.900
14.850
V
R
L
e
25 k
X
to V
a
/2
14.850
14.800
min
0.022
0.100
0.150
V
0.150
0.200
max
I
SC
Output Current Sourcing, V
O
e
0V
22
16
13
mA
V
a
e
5V
10
8
min
Sinking, V
O
e
5V
21
16
13
mA
8
8
min
I
SC
Output Current Sourcing, V
O
e
0V
40
15
15
mA
V
a
e
15V
10
10
min
Sinking, V
O
e
13V
39
24
21
mA
(Note 11)
8
8
min
I
S
Supply Current V
O
e
1.5V
14
20
26
m
A
24
30
max
V
a
e
15V
18
26
34
m
A
31
39
max
3
AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
A
e
T
J
e
25
§
C. Boldface limits apply at the temperature extremes. V
a
e
5V, V
b
e
0V, V
CM
e
1.5V, V
O
e
V
a
/2, and R
L
l
1M unless otherwise specified.
Typ
LMC6041AI LMC6041I
Units
Symbol
Parameter
Conditions
(Note 5)
Limit
Limit
(Limit)
(Note 6)
(Note 6)
SR
Slew Rate
(Note 8)
0.02
0.015
0.010
V/
m
s
0.010
0.007
min
GBW Gain-Bandwidth Product
75
kHz
w
m
Phase Margin
60
Deg
e
n
Input-Referred
F
e
1 kHz
83
nV/
S
Hz
Voltage Noise
i
n
Input-Referred
F
e
1 kHz
0.0002
pA/
S
Hz
Current Noise
T.H.D.
Total Harmonic
F
e
1 kHz, A
V
eb
5
Distortion
R
L
e
100 k
X
,V
O
e
2V
pp
0.01
%
g
5V Supply
Note 1: Absolute Maxium Ratings indicate limits beyond which damage to the device may occur. Operating conditions indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications 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 110
§
C. Output currents in excess of
g
30 mA over long term may adversely affect reliability.
Note 3: The maximum power dissipation is a function of T
J(max)
,
i
JA
, and T
A
. The maximum allowable power dissipation at any ambient temperature is P
D
e
(T
J(max)
b
T
A
)/
i
JA
.
Note 4: Human body model, 1.5 k
X
in series with 100 pF.
Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed at room temperature (standard type face) or at operating temperature extremes (bold face type).
Note 7: V
a
e
15V, V
CM
e
7.5V and R
L
connected to 7.5V. For Sourcing tests, 7.5V
s
V
O
s
11.5V. For Sinking tests, 2.5V
s
V
O
s
7.5V.
Note 8: V
a
e
15V. Connected as Voltage Follower with 10V step input. Number specified in 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
i
JA
with P
D
e
(T
J
b
T
A
)/
i
JA
.
Note 10: All numbers apply for packages soldered directly into a PC board.
Note 11: Do not connect output to V
a
when V
a
is greater than 13V or reliability may be adversely affected.
4
Typical Performance Characteristics
V
S
e
g
7.5V, T
A
e
25
§
C unless otherwise specified
Offset Voltage vs
Supply Current vs
Temperature of Five
Input Bias Current
Supply Voltage
Representative Units
vs Temperature
Input Bias Current
Input Common-Mode
vs Input Common-Mode
Voltage Range vs
Output Characteristics
Voltage
Temperature
Current Sinking
Output Characteristics
Input Voltage Noise
Power Supply Rejection
Current Sourcing
vs Frequency
Ratio vs Frequency
TL/H/11136±2
5
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