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LMC6462 Dual/LMC6464 Quad Micropower, Rail-to-Rail Input and Output CMOS Operational
Amplifier
February 2004
LMC6462 Dual/LMC6464 Quad
Micropower, Rail-to-Rail Input and Output CMOS
Operational Amplifier
General Description
The LMC6462/4 is a micropower version of the popular
LMC6482/4, combining Rail-to-Rail Input and Output Range
with very low power consumption.
The LMC6462/4 provides an input common-mode voltage
range that exceeds both rails. The rail-to-rail output swing of
the amplifier, guaranteed for loads down to 25 kΩ, assures
maximum dynamic sigal range. This rail-to-rail performance
of the amplifier, combined with its high voltage gain makes it
unique among rail-to-rail amplifiers. The LMC6462/4 is an
excellent upgrade for circuits using limited common-mode
range amplifiers.
The LMC6462/4, with guaranteed specifications at 3V and
5V, is especially well-suited for low voltage applications. A
quiescent power consumption of 60 µW per amplifier (at V
S
= 3V) can extend the useful life of battery operated systems.
The amplifier’s 150 fA input current, low offset voltage of
0.25 mV, and 85 dB CMRR maintain accuracy in battery-
powered systems.
Features
(Typical unless otherwise noted)
n
Ultra Low Supply Current 20 µA/Amplifier
n
Guaranteed Characteristics at 3V and 5V
n
Rail-to-Rail Input Common-Mode Voltage Range
n
Rail-to-Rail Output Swing
(within 10 mV of rail, V
S
= 5V and R
L
= 25 kΩ)
n
Low Input Current 150 fA
n
Low Input Offset Voltage 0.25 mV
Applications
n
n
n
n
n
Battery Operated Circuits
Transducer Interface Circuits
Portable Communication Devices
Medical Applications
Battery Monitoring
8-Pin DIP/SO
14-Pin DIP/SO
01205101
Top View
01205102
Top View
Low-Power Two-Op-Amp Instrumentation Amplifier
01205121
© 2004 National Semiconductor Corporation
DS012051
www.national.com
LMC6462 Dual/LMC6464 Quad
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
ESD Tolerance (Note 2)
Differential Input Voltage
Voltage at Input/Output Pin
Supply Voltage (V
+
− V
−
)
Current at Input Pin (Note 12)
Current at Output Pin
(Notes 3, 8)
Current at Power Supply Pin
Lead Temp. (Soldering, 10 sec.)
Storage Temperature Range
Junction Temperature (Note 4)
+
Operating Ratings
Supply Voltage
Junction Temperature Range
LMC6462AM, LMC6464AM
LMC6462AI, LMC6464AI
LMC6462BI, LMC6464BI
Thermal Resistance (θ
JA
)
(Note 1)
3.0V
≤
V
+
≤
15.5V
−55˚C
≤
T
J
≤
+125˚C
−40˚C
≤
T
J
≤
+85˚C
−40˚C
≤
T
J
≤
+85˚C
115˚C/W
193˚C/W
81˚C/W
126˚C/W
2.0 kV
±
Supply Voltage
(V ) + 0.3V, (V
−
) − 0.3V
16V
±
5 mA
±
30 mA
40 mA
260˚C
−65˚C to +150˚C
150˚C
N Package, 8-Pin Molded DIP
M Package, 8-Pin Surface
Mount
N Package, 14-Pin Molded DIP
M Package, 14-Pin
Surface Mount
5V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 5V, V
−
= 0V, V
CM
= V
O
= V
+
/2 and R
L
>
1M.
Boldface
limits apply at the temperature extremes.
LMC6462AI
Symbol
Parameter
Conditions
Typ
(Note 5)
V
OS
TCV
OS
I
B
I
OS
C
IN
R
IN
CMRR
Input Offset Voltage
Input Offset Voltage
Average Drift
Input Current
Input Offset Current
Common-Mode
Input Capacitance
Input Resistance
Common Mode
Rejection Ratio
0V
≤
V
CM
≤
15.0V,
V
+
= 15V
0V
≤
V
CM
≤
5.0V
V
+
= 5V
+PSRR
−PSRR
V
CM
Positive Power Supply
Rejection Ratio
Negative Power Supply
Rejection Ratio
Input Common-Mode
Voltage Range
5V
≤
V
≤
15V,
+
LMC6462BI
LMC6464BI
Limit
(Note 6)
3.0
3.7
LMC6462AM
LMC6464AM
Limit
(Note 6)
0.5
1.5
mV
max
µV/˚C
Units
LMC6464AI
Limit
(Note 6)
0.5
1.2
0.25
1.5
(Note 13)
(Note 13)
0.15
0.075
3
10
5
10
5
200
100
pA max
pA max
pF
Tera
Ω
>
10
85
85
85
85
−0.2
5.30
V
+
= 15V
For CMRR
≥
50 dB
15.30
−0.2
70
67
70
67
70
67
70
67
−0.10
0.00
5.25
5.00
−0.15
0.00
15.25
15.00
65
62
65
62
65
62
65
62
−0.10
0.00
5.25
5.00
−0.15
0.00
15.25
15.00
70
65
70
65
70
65
70
65
−0.10
0.00
5.25
5.00
−0.15
0.00
15.25
15.00
dB
min
dB
min
dB
min
V
max
V
min
V
max
V
min
V
−
= 0V, V
O
= 2.5V
−5V
≤
V
≤
−15V,
−
V = 0V, V
O
= −2.5V
V
+
= 5V
For CMRR
≥
50 dB
+
www.national.com
2
LMC6462 Dual/LMC6464 Quad
5V DC Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 5V, V
−
= 0V, V
CM
= V
O
= V
+
/2 and R
L
>
1M.
Boldface
limits apply at the temperature extremes.
LMC6462AI
LMC6462BI
LMC6464BI
Limit
(Note 6)
LMC6462AM
LMC6464AM
Limit
(Note 6)
V/mV
min
Sinking
R
L
= 25 kΩ
(Note 7)
Sinking
200
4.995
+
Symbol
Parameter
Conditions
Typ
(Note 5)
LMC6464AI
Limit
(Note 6)
Units
A
V
Large Signal
Voltage Gain
R
L
= 100 kΩ
(Note 7)
Sourcing
3000
400
2500
V/mV
min
V/mV
min
V/mV
min
4.990
4.980
0.010
0.020
4.975
4.965
0.020
0.035
14.975
14.965
0.025
0.035
14.900
14.850
0.050
0.150
19
15
22
17
24
17
55
45
55
70
110
140
60
70
120
140
4.950
4.925
0.050
0.075
4.950
4.850
0.050
0.150
14.950
14.925
0.050
0.075
14.850
14.800
0.100
0.200
19
15
22
17
24
17
55
45
55
70
110
140
60
70
120
140
4.990
4.970
0.010
0.030
4.975
4.955
0.020
0.045
14.975
14.955
0.025
0.050
14.900
14.800
0.050
0.200
19
15
22
17
24
17
55
45
55
75
110
150
60
75
120
150
V
min
V
max
V
min
V
max
V
min
V
max
V
min
V
max
mA
min
mA
min
mA
min
mA
min
µA
max
µA
max
µA
max
µA
max
Sourcing
V
O
Output Swing
V
+
= 5V
R
L
= 100 kΩ to V /2
0.005
V = 5V
R
L
= 25 kΩ to V
+
/2
0.010
V = 15V
R
L
= 100 kΩ to V
+
/2
0.010
V
+
= 15V
R
L
= 25 kΩ to V /2
0.025
I
SC
Output Short Circuit
Current
V+ = 5V
I
SC
Output Short Circuit
Current
V = 15V
I
S
Supply Current
+
+
+
+
4.990
14.990
14.965
Sourcing, V
O
= 0V
Sinking, V
O
= 5V
Sourcing, V
O
= 0V
Sinking, V
O
= 12V
(Note 8)
Dual, LMC6462
V = +5V, V
O
= V /2
Quad, LMC6464
V = +5V, V
O
= V /2
Dual, LMC6462
V = +15V, V
O
= V /2
Quad, LMC6464
V = +15V, V
O
= V /2
+
+
+
+
+
+
+
+
27
27
38
75
40
80
50
90
3
www.national.com
LMC6462 Dual/LMC6464 Quad
5V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 5V, V
−
= 0V, V
CM
= V
O
= V
+
/2 and R
L
>
1M.
Boldface
limits apply at the temperature extremes.
LMC6462AI
Symbol
Parameter
Conditions
Typ
(Note 5)
SR
GBW
φ
m
G
m
e
n
Slew Rate
Gain-Bandwidth Product
Phase Margin
Gain Margin
Amp-to-Amp Isolation
Input-Referred
Voltage Noise
i
n
Input-Referred
Current Noise
(Note 10)
f = 1 kHz
V
CM
= 1V
f = 1 kHz
0.03
(Note 9)
V
+
= 15V
28
50
50
15
130
80
LMC6464AI
Limit
(Note 6)
15
8
LMC6462BI
LMC6464BI
Limit
(Note 6)
15
8
LMC6462AM
LMC6464AM
Limit
(Note 6)
15
8
V/ms
min
kHz
Deg
dB
dB
Units
3V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C, V
+
= 3V, V
−
= 0V, V
CM
= V
O
= V
+
/2 and R
L
>
1M.
Boldface
limits apply at the temperature extremes.
LMC6462AI
Symbol
Parameter
Conditions
Typ
(Note 5)
V
OS
TCV
OS
I
B
I
OS
CMRR
PSRR
V
CM
Input Offset Voltage
Input Offset Voltage
Average Drift
Input Current
Input Offset Current
Common Mode
Rejection Ratio
Power Supply
Rejection Ratio
Input Common-Mode
Voltage Range
3.0
V
O
Output Swing
R
L
= 25 kΩ to V
+
/2
2.95
0.15
I
S
Supply Current
Dual, LMC6462
V
O
= V
+
/2
Quad, LMC6464
V
O
= V
+
/2
80
40
3.0
2.9
0.1
55
70
110
140
3.0
2.9
0.1
55
70
110
140
3.0
2.9
0.1
55
70
110
140
µA
max
For CMRR
≥
50 dB
−0.10
0.0
0.0
0.0
3V
≤
V
≤
15V, V = 0V
+
−
LMC6462BI
LMC6464BI
Limit
(Note 6)
3.0
3.7
LMC6462AM
LMC6464AM
Limit
(Note 6)
2.0
3.0
mV
max
µV/˚C
Units
LMC6464AI
Limit
(Note 6)
2.0
2.7
0.9
2.0
(Note 13)
(Note 13)
0V
≤
V
CM
≤
3V
0.15
0.075
74
80
10
5
60
60
10
5
60
60
200
100
60
60
pA
pA
dB
min
dB
min
V
max
V
min
V
min
V
max
µA
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