LPC662
Low Power CMOS Dual Operational Amplifier
General Description
The LPC662 CMOS Dual operational amplifier is ideal for
operation from a single supply. It features a wide range of
operating voltage from +5V to +15V, 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. In-
put V
OS
, drift, and broadband noise as well as voltage gain
(into 100 k
and 5 k
) are all equal to or better than widely
accepted bipolar equivalents, while the power supply re-
quirement is typically less than 0.5 mW.
This chip is built with National's advanced Double-Poly
Silicon-Gate CMOS process.
See the LPC660 datasheet for a Quad CMOS operational
amplifier and LPC661 for a single CMOS operational ampli-
fier with these same features.
Applications
n
High-impedance buffer
n
Precision current-to-voltage converter
n
Long-term integrator
n
High-impedance preamplifier
n
Active filter
n
Sample-and-Hold circuit
n
Peak detector
Features
n
Rail-to-rail output swing
n
Micropower operation (
<
0.5 mW)
n
Specified for 100 k
and 5 k
loads
n
High voltage gain
120 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 includes GND
n
Operating range from +5V to +15V
n
Low distortion
0.01% at 1 kHz
n
Slew rate
0.11 V/s
n
Full military temperature range available
Connection Diagram
Ordering Information
Package
Temperature Range
NSC
Drawing
Transport
Media
Military
Industrial
8-Pin
LPC662AMD
D08C
Rail
Side Brazed
Ceramic DIP
8-Pin
LPC662AIM
M08A
Rail
Small Outline
or LPC662IM
Tape and Reel
8-Pin
LPC662AIN
N08E
Rail
Molded DIP
or LPC662IN
8-Pin
LPC662AMJ/883
J08A
Rail
Ceramic DIP
8-Pin DIP/SO
DS010548-1
Top View
March 1998
LPC662
Low
Power
CMOS
Dual
Operational
Amplifier
1999 National Semiconductor Corporation
DS010548
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 11)
Output Short Circuit to V
-
(Note 1)
Lead Temperature
(Soldering, 10 sec.)
260C
Storage Temp. Range
-65C to +150C
Junction Temperature
150C
ESD Rating
(C = 100 pF, R = 1.5 k
)
1000V
Power Dissipation
(Note 2)
Current at Input Pin
5 mA
Current at Output Pin
18 mA
Current at Power Supply Pin
35 mA
Voltage at Input/Output Pin
(V
+
) + 0.3V, (V
-
) -0.3V
Operating Ratings
(Note 3)
Temperature Range
LPC662AMJ/883
-55C
T
J
+125C
LPC662AM
-55C
T
J
+125C
LPC662AI
-40C
T
J
+85C
LPC662I
-40C
T
J
+85C
Supply Range
4.75V to 15.5V
Power Dissipation
(Note 9)
Thermal Resistance (
JA
) (Note 10)
8-Pin Ceramic DIP
100C/W
8-Pin Molded DIP
101C/W
8-Pin SO
165C/W
8-Pin Side Brazed Ceramic DIP
100C/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.
LPC662AM
LPC662AI
LPC662I
Parameter
Conditions
Typ
LPC662AMJ/883
Limit
Limit
Units
Limit
(Note 4)
(Note 4)
(Notes 4, 8)
Input Offset Voltage
1
3
3
6
mV
3.5
3.3
6.3
max
Input Offset Voltage
1.3
V/C
Average Drift
Input Bias Current
0.002
20
pA
100
4
4
max
Input Offset Current
0.001
20
pA
100
2
2
max
Input Resistance
>
1
Tera
Common Mode
0V
V
CM
12.0V
83
70
70
63
dB
Rejection Ratio
V
+
= 15V
68
68
61
min
Positive Power Supply
5V
V
+
15V
83
70
70
63
dB
Rejection Ratio
V
O
= 2.5V
68
68
61
min
Negative Power Supply
0V
V
-
-10V
94
84
84
74
dB
Rejection Ratio
82
83
73
min
Input Common-Mode
V
+
= 5V and 15V
-0.4
-0.1
-0.1
-0.1
V
Voltage Range
For CMRR
50 dB
0
0
0
max
V
+
- 1.9
V
+
- 2.3
V
+
- 2.3
V
+
- 2.3
V
V
+
- 2.6
V
+
- 2.5
V
+
- 2.5
min
Large Signal
R
L
= 100 k
(Note 5)
1000
400
400
300
V/mV
Voltage Gain
Sourcing
250
300
200
min
Sinking
500
180
180
90
V/mV
70
120
70
min
R
L
= 5 k
(Note 5)
1000
200
200
100
V/mV
Sourcing
150
160
80
min
Sinking
250
100
100
50
V/mV
35
60
40
min
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.
LPC662AM
LPC662AI
LPC662I
Parameter
Conditions
Typ
LPC662AMJ/883
Limit
Limit
Units
Limit
(Note 4)
(Note 4)
(Notes 4, 8)
Output Swing
V
+
= 5V
4.987
4.970
4.970
4.940
V
R
L
= 100 k
to V
+
/2
4.950
4.950
4.910
min
0.004
0.030
0.030
0.060
V
0.050
0.050
0.090
max
V
+
= 5V
4.940
4.850
4.850
4.750
V
R
L
= 5 k
to V
+
/2
4.750
4.750
4.650
min
0.040
0.150
0.150
0.250
V
0.250
0.250
0.350
max
V
+
= 15V
14.970
14.920
14.920
14.880
V
R
L
= 100 k
to V
+
/2
14.880
14.880
14.820
min
0.007
0.030
0.030
0.060
V
0.050
0.050
0.090
max
V
+
= 15V
14.840
14.680
14.680
14.580
V
R
L
= 5 k
to V
+
/2
14.600
14.600
14.480
min
0.110
0.220
0.220
0.320
V
0.300
0.300
0.400
max
Output Current
Sourcing, V
O
= 0V
22
16
16
13
mA
V
+
= 5V
12
14
11
min
Sinking, V
O
= 5V
21
16
16
13
mA
12
14
11
min
Output Current
Sourcing, V
O
= 0V
40
19
28
23
mA
V
+
= 15V
19
25
20
min
Sinking, V
O
= 13V
39
19
28
23
mA
(Note 11)
19
24
19
min
Supply Current
Both Amplifiers
86
120
120
140
A
V
O
= 1.5V
145
140
160
max
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3
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.
LPC662AM
LPC662AI
LPC662I
Parameter
Conditions
Typ
LPC662AMJ/883
Limit
Limit
Units
Limit
(Note 4)
(Note 4)
(Notes 4, 8)
Slew Rate
(Note 6)
0.11
0.07
0.07
0.05
V/s
0.04
0.05
0.03
min
Gain-Bandwidth Product
0.35
MHz
Phase Margin
50
Deg
Gain Margin
17
dB
Amp-to-Amp Isolation
(Note 7)
130
dB
Input Referred Voltage Noise
F = 1 kHz
42
Input Referred Current Noise
F = 1 kHz
0.0002
Total Harmonic Distortion
F = 1 kHz, A
V
= -10, V
+
= 15V
0.01
%
R
L
= 100 k
, V
O
= 8 V
PP
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 of 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 in-
tended 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: 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
= 100 k
connected to V
+
/2. Each amp excited in turn with 1 kHz to produce V
O
= 13 V
PP
.
Note 8: A military RETS electrical test specification is available on request. At the time of printing, the LPC662AMJ/883 RETS specification complied fully with the
boldface limits in this column. The LPC662AMJ/883 may also be procured to a Standard Military Drawing specification.
Note 9: 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 10: All numbers apply for packages soldered directly into a PC board.
Note 11: Do not connect output to V
+
when V
+
is greater than 13V or reliability may be adversely affected.
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4
Typical Performance Characteristics
V
S
=
7.5V, T
A
= 25C unless otherwise specified
Supply Current vs
Supply Voltage
DS010548-28
Input Bias Current
vs Temperature
DS010548-29
Input Common-Mode
Voltage Range vs
Temperature
DS010548-30
Output Characteristics
Current Sinking
DS010548-31
Output Characteristics
Current Sourcing
DS010548-32
Input Voltage Noise
vs Frequency
DS010548-33
Crosstalk Rejection
vs Frequency
DS010548-34
CMRR vs Frequency
DS010548-35
CMRR vs Temperature
DS010548-36
www.national.com
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