LMV981 Single / LMV982 Dual
1.8V, RRIO Operational Amplifiers with Shutdown
General Description
LMV981/LMV982 are low voltage, low power operational
amplifiers. LMV981/LMV982 are guaranteed to operate from
+1.8V to +5.0V supply voltages and have rail-to-rail input
and output. LMV981/LMV982 input common mode voltage
extends 200mV beyond the supplies which enables user
enhanced functionality beyond the supply voltage range.
The output can swing rail-to-rail unloaded and within 105mV
from the rail with 600
load at 1.8V supply. LMV981/
LMV982 are optimized to work at 1.8V which make them
ideal for portable two-cell battery powered systems and
single cell Li-Ion systems.
LMV981/LMV982 offer a shutdown pin that can be used to
disable the device and reduce the supply current. The device
is in shutdown when the SHDN-pin = low.
LMV981/LMV982
exhibit
excellent
speed-power
ratio,
achieving 1.4MHz gain bandwidth product at 1.8V supply
voltage with very low supply current. LMV981/LMV982 are
capable of driving a 600
load and up to 1000pF capacitive
load with minimal ringing. LMV981/LMV982 have a high DC
gain of 101dB, making them suitable for low frequency ap-
plications.
LMV981 is offered in space saving 6-Bump micro SMD,
SC70-6 and SOT23-6 packages. The 6-Bump micro SMD
package has only a 1.006mm x 1.514mm x 0.945mm foot-
print. LMV982 is offered in space saving MSOP-10 package.
These small packages are ideal solutions for area con-
strained PC boards and portable electronics such as cellular
phones and PDAs.
Features
(Typical 1.8V Supply Values; Unless Otherwise Noted)
n
Guaranteed 1.8V, 2.7V and 5V specifications
n
Output swing
-- w/600
load
80mV from rail
-- w/2k
load
30mV from rail
n
V
CM
200mV beyond rails
n
Supply current (per channel)
100A
n
Gain bandwidth product
1.4MHz
n
Maximum V
OS
4.0mV
n
Gain w/600
load
101dB
n
Ultra tiny package micro SMD
1.0mm x 1.5mm
n
Turn-on time from shutdown
19s
n
Temperature range
-40C to 125C
Applications
n
Industrial and automotive
n
Consumer communication
n
Consumer computing
n
PDAs
n
Portable audio
n
Portable/battery-powered electronic equipment
n
Supply current monitoring
n
Battery monitoring
Typical Application
200214H0
December 2002
LMV981
Single
/
LMV982
Dual
1.8V
,
RRIO
Operational
Amplifiers
with
Shutdown
2002 National Semiconductor Corporation
DS200214
www.national.com
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)
Machine Model
200V
Human Body Model
2000V
Differential Input Voltage
Supply Voltage
Supply Voltage (V
+
V
-
)
5.5V
Output Short Circuit to V
+
(Note 3)
Output Short Circuit to V
-
(Note 3)
Storage Temperature Range
-65C to 150C
Junction Temperature (Note 4)
150C
Mounting Temp.
Infrared or Convection (20 sec)
235C
Operating Ratings
(Note 1)
Supply Voltage Range
1.8V to 5.0V
Temperature Range
-40C to 125C
Thermal Resistance (
JA
)
6-Bump micro SMD
286C/W
SC70-6
414C/W
SOT23-6
265C/W
MSOP-10
235C/W
1.8V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25C. V
+
= 1.8V, V
-
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 M
and SHDN tied to V
+
. Boldface limits apply at the temperature extremes. See (Note 10).
Symbol
Parameter
Condition
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
OS
Input Offset Voltage
LMV981 (Single)
1
4
6
mV
LMV982 (Dual)
1
5.5
7.5
TCV
OS
Input Offset Voltage Average
Drift
5.5
V/C
I
B
Input Bias Current
15
35
50
nA
I
OS
Input Offset Current
13
25
40
nA
I
S
Supply Current (per channel)
103
185
205
A
In Shutdown
LMV981 (Single)
0.156
1
2
LMV982 (Dual)
0.178
3.5
5
CMRR
Common Mode Rejection
Ratio
LMV981, 0
V
CM
0.6V
1.4V
V
CM
1.8V
(Note 8)
60
55
78
dB
LMV982, 0
V
CM
0.6V
1.4V
V
CM
1.8V (Note 8)
55
50
76
-0.2V
V
CM
0V
1.8V
V
CM
2.0V
50
72
PSRR
Power Supply Rejection
Ratio
1.8V
V
+
5V
75
70
100
dB
CMVR
Input Common-Mode Voltage
Range
For CMRR
Range
50dB
T
A
= 25C
V
-
-0.2
-0.2 to 2.1
V
+
+0.2
V
T
A
= -40C to
85C
V
-
V
+
T
A
= 125C
V
-
+0.2
V
+
-0.2
LMV981/LMV982
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2
1.8V DC Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25C. V
+
= 1.8V, V
-
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 M
and SHDN tied to V
+
. Boldface limits apply at the temperature extremes. See (Note 10).
Symbol
Parameter
Condition
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
A
V
Large Signal Voltage Gain
LMV981 (Single)
R
L
= 600
to 0.9V,
V
O
= 0.2V to 1.6V, V
CM
= 0.5V
77
73
101
dB
R
L
= 2k
to 0.9V,
V
O
= 0.2V to 1.6V, V
CM
= 0.5V
80
75
105
Large Signal Voltage Gain
LMV982 (Dual)
R
L
= 600
to 0.9V,
V
O
= 0.2V to 1.6V, V
CM
= 0.5V
75
72
90
dB
R
L
= 2k
to 0.9V,
V
O
= 0.2V to 1.6V, V
CM
= 0.5V
78
75
100
V
O
Output Swing
R
L
= 600
to 0.9V
V
IN
=
100mV
1.65
1.63
1.72
V
0.077
0.105
0.120
R
L
= 2k
to 0.9V
V
IN
=
100mV
1.75
1.74
1.77
0.024
0.035
0.04
I
O
Output Short Circuit Current
Sourcing, V
O
= 0V
V
IN
= 100mV
4
3.3
8
mA
Sinking, V
O
= 1.8V
V
IN
= -100mV
7
5
9
Ton
Turn-on Time from Shutdown
19
s
V
SHDN
Turn-on Voltage to enable
part
1.0
V
Turn-off Voltage
0.55
1.8V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25C. V
+
= 1.8V, V
-
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 M
and SHDN tied to V
+
. Boldface limits apply at the temperature extremes. See (Note 10).
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
SR
Slew Rate
(Note 7)
0.35
V/s
GBW
Gain-Bandwidth Product
1.4
MHz
m
Phase Margin
67
deg
G
m
Gain Margin
7
dB
e
n
Input-Referred Voltage Noise
f = 1kHz, V
CM
= 0.5V
60
i
n
Input-Referred Current Noise
f = 1kHz
0.06
THD
Total Harmonic Distortion
f = 1kHz, A
V
= +1
R
L
= 600
, V
IN
= 1 V
PP
0.023
%
Amp-to-Amp Isolation
(Note 9)
123
dB
LMV981/LMV982
www.national.com
3
2.7V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25C. V
+
= 2.7V, V
-
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 M
and SHDN tied to V
+
. Boldface limits apply at the temperature extremes. See (Note 10).
Symbol
Parameter
Condition
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
OS
Input Offset Voltage
LMV981 (Single)
1
4
6
mV
LMV982 (Dual)
1
6
7.5
mV
TCV
OS
Input Offset Voltage Average
Drift
5.5
V/C
I
B
Input Bias Current
15
35
50
nA
I
OS
Input Offset Current
8
25
40
nA
I
S
Supply Current (per channel)
105
190
210
A
In Shutdown
LMV981 (Single)
0.061
1
2
LMV982 (Dual)
0.101
3.5
5
CMRR
Common Mode Rejection
Ratio
LMV981, 0
V
CM
1.5V
2.3V
V
CM
2.7V (Note 8)
60
55
81
dB
LMV982, 0
V
CM
1.5V
2.3V
V
CM
2.7V (Note 8)
55
50
80
-0.2V
V
CM
0V
2.7V
V
CM
2.9V
50
74
PSRR
Power Supply Rejection
Ratio
1.8V
V
+
5V
V
CM
= 0.5V
75
70
100
dB
CMVR
Input Common-Mode Voltage
Range
For CMRR
Range
50dB
T
A
= 25C
V
-
-0.2
-0.2 to 3.0
V
+
+0.2
V
T
A
= -40C to
85C
V
-
V
+
T
A
= 125C
V
-
+0.2
V
+
-0.2
A
V
Large Signal Voltage Gain
LMV981(Single)
R
L
= 600
to 1.35V,
V
O
= 0.2V to 2.5V
87
86
104
dB
R
L
= 2k
to 1.35V,
V
O
= 0.2V to 2.5V
92
91
110
Large Signal Voltage Gain
LMV982 (Dual)
R
L
= 600
to 1.35V,
V
O
= 0.2V to 2.5V
78
75
90
R
L
= 2k
to 1.35V,
V
O
= 0.2V to 2.5V
81
78
100
V
O
Output Swing
R
L
= 600
to 1.35V
V
IN
=
100mV
2.55
2.53
2.62
V
0.083
0.110
0.130
R
L
= 2k
to 1.35V
V
IN
=
100mV
2.65
2.64
2.675
0.025
0.04
0.045
I
O
Output Short Circuit Current
Sourcing, V
O
= 0V
V
IN
= 100mV
20
15
30
mA
Sinking, V
O
= 0V
V
IN
= -100mV
18
12
25
Ton
Turn-on Time from Shutdown
12.5
s
LMV981/LMV982
www.national.com
4
2.7V DC Electrical Characteristics
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25C. V
+
= 2.7V, V
-
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 M
and SHDN tied to V
+
. Boldface limits apply at the temperature extremes. See (Note 10).
Symbol
Parameter
Condition
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
SHDN
Turn-on Voltage to enable
part
1.9
V
Turn-off Voltage
0.8
2.7V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25C. V
+
= 2.7V, V
-
= 0V, V
CM
= 1.0V, V
O
= 1.35V,
R
L
>
1 M
and SHDN tied to V
+
. Boldface limits apply at the temperature extremes. See (Note 10).
Symbol
Parameter
Conditions
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
SR
Slew Rate
(Note 7)
0.4
V/s
GBW
Gain-Bandwidth Product
1.4
MHz
m
Phase Margin
70
deg
G
m
Gain Margin
7.5
dB
e
n
Input-Referred Voltage Noise
f = 1kHz, V
CM
= 0.5V
57
i
n
Input-Referred Current Noise
f = 1kHz
0.082
THD
Total Harmonic Distortion
f = 1kHz, A
V
= +1
R
L
= 600k
, V
IN
= 1V
PP
0.022
%
Amp-to-Amp Isolation
(Note 9)
123
dB
5V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25C. V
+
= 5V, V
-
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 M
and SHDN tied to V
+
. Boldface limits apply at the temperature extremes. See (Note 10).
Symbol
Parameter
Condition
Min
(Note 6)
Typ
(Note 5)
Max
(Note 6)
Units
V
OS
Input Offset Voltage
LMV981 (Single)
1
4
6
mV
LMV982 (Dual)
1
5.5
7.5
TCV
OS
Input Offset Voltage Average
Drift
5.5
V/C
I
B
Input Bias Current
14
35
50
nA
I
OS
Input Offset Current
9
25
40
nA
I
S
Supply Current (per Channel)
116
210
230
A
In Shutdown
LMV981 (Single)
0.201
1
2
A
LMV982 (Dual)
0.302
3.5
5
CMRR
Common Mode Rejection
Ratio
0
V
CM
3.8V
4.6V
V
CM
5.0V (Note 8)
60
55
86
dB
-0.2V
V
CM
0V
5.0V
V
CM
5.2V
50
78
PSRR
Power Supply Rejection
Ratio
1.8V
V
+
5V
V
CM
= 0.5V
75
70
100
dB
LMV981/LMV982
www.national.com
5
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