LMC662
CMOS Dual Operational Amplifier
General Description
The LMC662 CMOS Dual operational amplifier is ideal for
operation from a single supply. It operates from +5V to +15V
and features rail-to-rail output swing in addition to an input
common-mode range that includes ground. Performance
limitations that have plagued CMOS amplifiers in the past
are not a problem with this design. Input V
OS
, drift, and
broadband noise as well as voltage gain into realistic loads
(2 k
and 600) are all equal to or better than widely
accepted bipolar equivalents.
This chip is built with National's advanced Double-Poly
Silicon-Gate CMOS process.
See the LMC660 datasheet for a Quad CMOS operational
amplifier with these same features.
Features
n
Rail-to-rail output swing
n
Specified for 2 k
and 600 loads
n
High voltage gain:
126 dB
n
Low input offset voltage:
3 mV
n
Low offset voltage drift:
1.3 V/C
n
Ultra low input bias current:
2 fA
n
Input common-mode range includes V
-
n
Operating range from +5V to +15V supply
n
I
SS
= 400 A/amplifier; independent of V+
n
Low distortion:
0.01% at 10 kHz
n
Slew rate:
1.1 V/s
Applications
n
High-impedance buffer or preamplifier
n
Precision current-to-voltage converter
n
Long-term integrator
n
Sample-and-hold circuit
n
Peak detector
n
Medical instrumentation
n
Industrial controls
n
Automotive sensors
Connection Diagram
8-Pin DIP/SO
00976301
Typical Application
Low-Leakage Sample-and-Hold
00976315
Ordering Information
Package
Temperature Range
NSC
Drawing
Transport
Media
Industrial
Commercial
8-Pin
Small Outline
LMC662AIM
LMC662CM
M08A
Rail
LMC662AIMX
LMC662CMX
Tape and Reel
8-Pin
Molded DIP
LMC662AIN
LMC662CN
N08E
Rail
April 2003
LMC662
CMOS
Dual
Operational
Amplifier
2003 National Semiconductor Corporation
DS009763
www.national.com
Absolute Maximum Ratings
(Note 3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Differential Input Voltage
Supply Voltage
Supply Voltage (V
+
- V
-
)
16V
Output Short Circuit to V
+
(Note 12)
Output Short Circuit to V
-
(Note 1)
Lead Temperature
(Soldering, 10 sec.)
260C
Storage Temp. Range
-65C to +150C
Voltage at Input/Output Pins
(V
+
) +0.3V, (V
-
) -0.3V
Current at Output Pin
18 mA
Current at Input Pin
5 mA
Current at Power Supply Pin
35 mA
Power Dissipation
(Note 2)
Junction Temperature
150C
ESD Tolerance (Note 8)
1000V
Operating Ratings
(Note 3)
Temperature Range
LMC662AI
-40C
T
J
+85C
LMC662C
0C
T
J
+70C
Supply Voltage Range
4.75V to 15.5V
Power Dissipation
(Note 10)
Thermal Resistance (
JA
) (Note 11)
8-Pin Molded DIP
101C/W
8-Pin SO
165C/W
DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25C. 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.
Parameter
Conditions
Typ
(Note 4)
LMC662AI
LMC662C
Units
Limit
Limit
(Note 4)
(Note 4)
Input Offset Voltage
1
3
6
mV
3.3
6.3
max
Input Offset Voltage
1.3
V/C
Average Drift
Input Bias Current
0.002
pA
4
2
max
Input Offset Current
0.001
pA
2
1
max
Input Resistance
>
1
Tera
Common Mode
0V
V
CM
12.0V
83
70
63
dB
Rejection Ratio
V
+
= 15V
68
62
min
Positive Power Supply
5V
V
+
15V
83
70
63
dB
Rejection Ratio
V
O
= 2.5V
68
62
min
Negative Power Supply
0V
V
-
-10V
94
84
74
dB
Rejection Ratio
83
73
min
Input Common-Mode
V
+
= 5V & 15V
-0.4
-0.1
-0.1
V
Voltage Range
For CMRR
50 dB
0
0
max
V
+
- 1.9
V
+
- 2.3
V
+
- 2.3
V
V
+
- 2.5
V
+
- 2.4
min
Large Signal
R
L
= 2 k
(Note 5)
2000
440
300
V/mV
Voltage Gain
Sourcing
400
200
min
Sinking
500
180
90
V/mV
120
80
min
R
L
= 600
(Note 5)
1000
220
150
V/mV
Sourcing
200
100
min
Sinking
250
100
50
V/mV
60
40
min
LMC662
www.national.com
2
DC Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25C. 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.
Parameter
Conditions
Typ
(Note 4)
LMC662AI
LMC662C
Units
Limit
Limit
(Note 4)
(Note 4)
Output Swing
V
+
= 5V
4.87
4.82
4.78
V
R
L
= 2 k
to V
+
/2
4.79
4.76
min
0.10
0.15
0.19
V
0.17
0.21
max
V
+
= 5V
4.61
4.41
4.27
V
R
L
= 600
to V
+
/2
4.31
4.21
min
0.30
0.50
0.63
V
0.56
0.69
max
V
+
= 15V
14.63
14.50
14.37
V
R
L
= 2 k
to V
+
/2
14.44
14.32
min
0.26
0.35
0.44
V
0.40
0.48
max
V
+
= 15V
13.90
13.35
12.92
V
R
L
= 600
to V
+
/2
13.15
12.76
min
0.79
1.16
1.45
V
1.32
1.58
max
Output Current
Sourcing, V
O
= 0V
22
16
13
mA
V
+
= 5V
14
11
min
Sinking, V
O
= 5V
21
16
13
mA
14
11
min
Output Current
Sourcing, V
O
= 0V
40
28
23
mA
V
+
= 15V
25
21
min
Sinking, V
O
= 13V
39
28
23
mA
(Note 12)
24
20
min
Supply Current
Both Amplifiers
0.75
1.3
1.6
mA
V
O
= 1.5V
1.5
1.8
max
AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25C. 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.
Parameter
Conditions
Typ
(Note 4)
LMC662AI
LMC662C
Units
Limit
Limit
(Note 4)
(Note 4)
Slew Rate
(Note 6)
1.1
0.8
0.8
V/s
0.6
0.7
min
Gain-Bandwidth Product
1.4
MHz
Phase Margin
50
Deg
Gain Margin
17
dB
Amp-to-Amp Isolation
(Note 7)
130
dB
Input-Referred Voltage Noise
F = 1 kHz
22
Input-Referred Current Noise
F = 1 kHz
0.0002
LMC662
www.national.com
3
AC Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25C. 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.
Parameter
Conditions
Typ
(Note 4)
LMC662AI
LMC662C
Units
Limit
Limit
(Note 4)
(Note 4)
Total Harmonic Distortion
F = 10 kHz, A
V
= -10
%
R
L
= 2 k
, V
O
= 8 V
PP
0.01
V
+
= 15V
Note 1: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature and/or multiple Op Amp shorts
can result in exceeding the maximum allowed junction temperature of 150C. Output currents in excess of
30 mA over long term may adversely affect reliability.
Note 2: The maximum power dissipation is a function of T
J(max)
,
JA
, and T
A
. The maximum allowable power dissipation at any ambient temperature is P
D
=
(T
J(max)
T
A
)/
JA
.
Note 3: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings 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 4: Typical values represent the most likely parametric norm. Limits are guaranteed by testing or correlation.
Note 5: V
+
= 15V, V
CM
= 7.5V and R
L
connected to 7.5V. For Sourcing tests, 7.5V
V
O
11.5V. For Sinking tests, 2.5V V
O
7.5V.
Note 6: V
+
= 15V. Connected as Voltage Follower with 10V step input. Number specified is the slower of the positive and negative slew rates.
Note 7: Input referred. V
+
= 15V and R
L
= 10 k
connected to V
+
/2. Each amp excited in turn with 1 kHz to produce V
O
= 13 V
PP
.
Note 8: Human body model, 1.5 k
in series with 100 pF.
Note 9: A military RETS electrical test specification is available on request.
Note 10: For operating at elevated temperatures the device must be derated based on the thermal resistance
JA
with P
D
= (T
J
T
A
)/
JA
.
Note 11: All numbers apply for packages soldered directly into a PC board.
Note 12: Do not connect output to V
+
when V
+
is greater than 13V or reliability may be adversely affected.
LMC662
www.national.com
4
Typical Performance Characteristics
V
S
=
7.5V, T
A
= 25C unless otherwise specified
Supply Current vs. Supply Voltage
Offset Voltage
00976324
00976325
Input Bias Current
Output Characteristics Current Sinking
00976326
00976327
Output Characteristics Current Sourcing
Input Voltage Noise vs. Frequency
00976328
00976329
LMC662
www.national.com
5
PDF 
ZIP