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LMV981 Single / LMV982 Dual 1.8V, RRIO Operational Amplifiers with Shutdown
November 2005
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 600Ω 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. The output will be
high impedance in shutdown.
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 600Ω 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/600Ω load
80mV from rail
— w/2kΩ load
30mV from rail
n
V
CM
200mV beyond rails
n
Supply current (per channel)
100µA
n
Gain bandwidth product
1.4MHz
n
Maximum V
OS
4.0mV
n
Gain w/600Ω load
101dB
n
Ultra tiny package micro SMD
1.0mm x 1.5mm
n
Turn-on time from shutdown
19µs
n
Temperature range
−40˚C to 125˚C
Applications
n
n
n
n
n
n
n
n
Industrial and automotive
Consumer communication
Consumer computing
PDAs
Portable audio
Portable/battery-powered electronic equipment
Supply current monitoring
Battery monitoring
Typical Application
200214H0
© 2005 National Semiconductor Corporation
DS200214
www.national.com
LMV981/LMV982
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
Human Body Model
Differential Input Voltage
Supply Voltage (V
+
–V
−
)
Output Short Circuit to V
+
(Note 3)
Output Short Circuit to V
−
(Note 3)
Storage Temperature Range
Junction Temperature (Note 4)
−65˚C to 150˚C
150˚C
200V
2000V
Mounting Temp.
Infrared or Convection (20 sec)
235˚C
Operating Ratings
(Note 1)
Supply Voltage Range
Temperature Range
Thermal Resistance (θ
JA
)
6-Bump micro SMD
SC70-6
SOT23-6
MSOP-10
286˚C/W
414˚C/W
265˚C/W
235˚C/W
1.8V to 5.0V
−40˚C to 125˚C
±
Supply Voltage
5.5V
1.8V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C. V
+
= 1.8V, V
−
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 MΩ and SHDN tied to V
+
.
Boldface
limits apply at the temperature extremes. See (Note 10).
Symbol
V
OS
Parameter
Input Offset Voltage
Condition
LMV981 (Single)
LMV982 (Dual)
TCV
OS
I
B
I
OS
I
S
Input Offset Voltage Average
Drift
Input Bias Current
Input Offset Current
Supply Current (per channel)
In Shutdown
LMV981 (Single)
LMV982 (Dual)
CMRR
Common Mode Rejection
Ratio
LMV981, 0
≤
V
CM
≤
0.6V
1.4V
≤
V
CM
≤
1.8V
(Note 8)
LMV982, 0
≤
V
CM
≤
0.6V
1.4V
≤
V
CM
≤
1.8V (Note 8)
−0.2V
≤
V
CM
≤
0V
1.8V
≤
V
CM
≤
2.0V
PSRR
CMVR
Power Supply Rejection
Ratio
Input Common-Mode Voltage
Range
1.8V
≤
V
+
≤
5V
For CMRR
Range
≥
50dB
T
A
= 25˚C
T
A
= −40˚C to
85˚C
T
A
= 125˚C
60
55
55
50
50
75
70
V
−
−0.2
V
−
V
−
+0.2
Min
(Note 6)
Typ
(Note 5)
1
1
5.5
15
13
103
0.156
0.178
78
35
50
25
40
185
205
1
2
3.5
5
µA
Max
(Note 6)
4
6
5.5
7.5
Units
mV
µV/˚C
nA
nA
76
72
100
−0.2 to 2.1
V
+
+0.2
V
+
V
+
−0.2
dB
dB
V
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2
LMV981/LMV982
1.8V DC Electrical Characteristics
Symbol
A
V
Parameter
Large Signal Voltage Gain
LMV981 (Single)
(Continued)
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C. V
+
= 1.8V, V
−
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 MΩ and SHDN tied to V
+
.
Boldface
limits apply at the temperature extremes. See (Note 10).
Condition
R
L
= 600Ω to 0.9V,
V
O
= 0.2V to 1.6V, V
CM
= 0.5V
R
L
= 2kΩ to 0.9V,
V
O
= 0.2V to 1.6V, V
CM
= 0.5V
Large Signal Voltage Gain
LMV982 (Dual)
R
L
= 600Ω to 0.9V,
V
O
= 0.2V to 1.6V, V
CM
= 0.5V
R
L
= 2kΩ to 0.9V,
V
O
= 0.2V to 1.6V, V
CM
= 0.5V
Min
(Note 6)
77
73
80
75
75
72
78
75
1.65
1.63
Typ
(Note 5)
101
105
90
100
1.72
0.077
R
L
= 2kΩ to 0.9V
V
IN
=
±
100mV
1.75
1.74
1.77
0.024
0.035
0.04
0.105
0.120
dB
dB
Max
(Note 6)
Units
V
O
Output Swing
R
L
= 600Ω to 0.9V
V
IN
=
±
100mV
V
I
O
Output Short Circuit Current
Sourcing, V
O
= 0V
V
IN
= 100mV
Sinking, V
O
= 1.8V
V
IN
= −100mV
4
3.3
7
5
8
9
19
1.0
V
0.55
mA
Ton
V
SHDN
Turn-on Time from Shutdown
Turn-on Voltage to enable
part
Turn-off Voltage
µs
1.8V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C. V
+
= 1.8V, V
−
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 MΩ and SHDN tied to V
+
.
Boldface
limits apply at the temperature extremes. See (Note 10).
Symbol
SR
GBW
Φ
m
G
m
e
n
i
n
THD
Parameter
Slew Rate
Gain-Bandwidth Product
Phase Margin
Gain Margin
Input-Referred Voltage Noise
Input-Referred Current Noise
Total Harmonic Distortion
Amp-to-Amp Isolation
f = 1kHz, V
CM
= 0.5V
f = 1kHz
f = 1kHz, A
V
= +1
R
L
= 600Ω, V
IN
= 1 V
PP
(Note 9)
(Note 7)
Conditions
Min
(Note 6)
Typ
(Note 5)
0.35
1.4
67
7
60
0.06
0.023
123
%
dB
Max
(Note 6)
Units
V/µs
MHz
deg
dB
3
www.national.com
LMV981/LMV982
2.7V DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25˚C. V
+
= 2.7V, V
−
= 0V, V
CM
= V
+
/2, V
O
= V
+
/2,
R
L
>
1 MΩ and SHDN tied to V
+
.
Boldface
limits apply at the temperature extremes. See (Note 10).
Symbol
V
OS
Parameter
Input Offset Voltage
Condition
LMV981 (Single)
LMV982 (Dual)
TCV
OS
I
B
I
OS
I
S
Input Offset Voltage Average
Drift
Input Bias Current
Input Offset Current
Supply Current (per channel)
In Shutdown
LMV981 (Single)
LMV982 (Dual)
CMRR
Common Mode Rejection
Ratio
LMV981, 0
≤
V
CM
≤
1.5V
2.3V
≤
V
CM
≤
2.7V (Note 8)
LMV982, 0
≤
V
CM
≤
1.5V
2.3V
≤
V
CM
≤
2.7V (Note 8)
−0.2V
≤
V
CM
≤
0V
2.7V
≤
V
CM
≤
2.9V
PSRR
CMVR
Power Supply Rejection
Ratio
Input Common-Mode Voltage
Range
1.8V
≤
V
+
≤
5V
V
CM
= 0.5V
For CMRR
Range
≥
50dB
T
A
= 25˚C
T
A
= −40˚C to
85˚C
T
A
= 125˚C
A
V
Large Signal Voltage Gain
LMV981(Single)
R
L
= 600Ω to 1.35V,
V
O
= 0.2V to 2.5V
R
L
= 2kΩ to 1.35V,
V
O
= 0.2V to 2.5V
Large Signal Voltage Gain
LMV982 (Dual)
R
L
= 600Ω to 1.35V,
V
O
= 0.2V to 2.5V
R
L
= 2kΩ to 1.35V,
V
O
= 0.2V to 2.5V
V
O
Output Swing
R
L
= 600Ω to 1.35V
V
IN
=
±
100mV
60
55
55
50
50
75
70
V
−
−0.2
V
−
V
−
+0.2
87
86
92
91
78
75
81
78
2.55
2.53
104
110
90
100
2.62
0.083
R
L
= 2kΩ to 1.35V
V
IN
=
±
100mV
2.65
2.64
2.675
0.025
I
O
Output Short Circuit Current
Sourcing, V
O
= 0V
V
IN
= 100mV
Sinking, V
O
= 0V
V
IN
= −100mV
Ton
Turn-on Time from Shutdown
20
15
18
12
30
25
12.5
mA
0.04
0.045
0.110
0.130
dB
Min
(Note 6)
Typ
(Note 5)
1
1
5.5
15
8
105
0.061
0.101
81
80
74
100
−0.2 to 3.0
V
+
+0.2
V
+
V
+
−0.2
V
35
50
25
40
190
210
1
2
3.5
5
µA
Max
(Note 6)
4
6
6
7.5
Units
mV
mV
µV/˚C
nA
nA
dB
dB
V
µs
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