LMV301
Low Input Bias Current, 1.8V Op Amp w/ Rail-to-Rail
Output
General Description
The LMV301 CMOS operational amplifier is ideal for single
supply, low voltage operation with a guaranteed operating
voltage range from 1.8V to 5V. The low input bias current of
less than 0.182pA typical, eliminates input voltage errors that
may originate from small input signals. This makes the
LMV301 ideal for electrometer applications requiring low
input leakage such as sensitive photodetection transimped-
ance amplifiers and sensor amplifiers. The LMV301 also
features a rail-to-rail output voltage swing in addition to a
input common-mode range that includes ground. The
LMV301 will drive a 600
resistive load and up to 1000pF
capacitive load in unity gain follower applications. The low
supply voltage also makes the LMV301 well suited for
portable two-cell battery systems and single cell Li-Ion
systems.
The LMV301 exhibits excellent speed-power ratio, achieving
1MHz at unity gain with low supply current. The high DC gain
of 100dB makes it ideal for other low frequency applications.
The LMV301 is offered in a space saving SC-70 package,
which is only 2.0X2.1X1.0mm. It is also similar to the
LMV321 except the LMV301 has a CMOS input.
Key Specifications
(Typical values unless otherwise specified)
n
Input bias current
0.182pA
n
Gain bandwidth product
1MHz
n
Supply voltage
@
1.8V
1.8V to 5V
n
Supply current
150A
n
Input referred voltage noise
@
1kHz
40nV/
n
DC Gain (600
load)
100dB
n
Output voltage range
@
1.8V
0.024 to 1.77V
n
Input common-mode voltage range
-0.3V to V
+
- 1.2V
Applications
n
Thermocouple amplifiers
n
Photo current amplifiers
n
Transducer amplifiers
n
Sample and hold circuits
n
Low frequency active filters
Connection Diagram
SC70-5
20019301
Top View
Applications Circuit
Low Leakage Sample and Hold
20019307
Ordering Information
Package
Part Number
Package Marking
Transport Media
NSC Drawing
5-Pin SC70-5
LMV301MG
A48
1k Units Tape and Reel
MAA05A
LMV301MGX
3k Units Tape and Reel
March 2001
LMV301
Low
Input
Bias
Current,
1.8V
Op
Amp
w/
Rail-to-Rail
Output
2001 National Semiconductor Corporation
DS200193
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 7)
Machine Model
200V
Human Body Model
2000V
Differential Input Voltage
Supply Voltage
Supply Voltage (V
+
- V
-
)
5.5V
Output Short Circuit to V
+
(Note 2)
Output Short Circuit to V
-
(Note 2)
Storage Tempeature Range
-65C to 150C
Mounting Temperature
Infrared or Convection (20 sec)
235C
Junction Temperature (Note 3)
150C
Operating Ratings
(Note 1)
Supply Voltage
1.8V to 5.0V
Temperature Range
-40C
T
J
+85C
Thermal Resistance (
JA
)
Ultra Tiny SC70-5 Package
5-pin Surface Mount
478C/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, and R
L
>
1M
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Condition
Min
(Note 5)
Typ
(Note 4)
Max
(Note 5)
Units
V
OS
Input Offset Voltage
V
CM
= 0.4V, V
+
= 1.3V, = V
-
= -0.5V
0.9
8
9
mV
I
B
Input Bias Current
0.182
35
50
pA
I
S
Supply Current
V
CM
= 0.4V, V
+
= 1.3V, = V
-
= -0.5V
150
250
275
A
CMRR
Common Mode Rejection
Ratio
0.3V
V
CM
0.9V
62
60
108
dB
PSRR
Power Supply Rejection
Ratio
1.8V
V
+
5V,
0.9
V
CM
2.5V
67
62
110
dB
V
CM
Input Common-Mode Voltage
Range
For CMRR
50dB
-0.3
0
0.6
V
A
V
Large Signal Voltage Gain
Sourcing
R
L
= 600
to 0V, V
+
= 1.2V, V
-
=
-0.6V, V
O
= -0.2V to 0.8V, V
CM
= 0V
80
75
119
dB
R
L
= 2k
to 0V, V
+
= 1.2V, V
-
=
-0.6V, V
O
= -0.2V to 0.8V, V
CM
= 0V
80
75
111
Sinking
R
L
= 600
to 0V, V
+
= 1.2V, V
-
=
-0.6V, V
O
= -0.2V to 0.8V, V
CM
= 0V
80
75
94
dB
R
L
= 2k
to 0V, V
+
= 1.2V, V
-
=
-0.6V, V
O
= -0.2V to 0.8V, V
CM
= 0V
80
75
96
V
O
Output Swing
R
L
= 600
to 0.9V
V
IN
=
100mV
V
OH
1.65
1.63
1.72
V
V
OL
0.074
0.100
V
R
L
= 2k
to 0.9V
V
IN
=
100mV
V
OH
1.75
1.74
1.77
V
V
OL
0.024
0.035
0.040
V
I
O
Output Short Circuit Current
Sourcing,
V
O
= 0V, V
IN
= 100mV
4
3.3
8.4
mA
Sinking,
V
O
= 1.8V, V
IN
= -100mV
7
9.8
mA
LMV301
www.national.com
2
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, and R
L
>
1M
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Condition
Typ
(Note 4)
Units
SR
Slew Rate
(Note 6)
0.57
V/s
GBW
Gain Bandwidth Product
1
MHz
m
Phase Margin
60
Deg
G
m
Gain Margin
10
dB
e
n
Input-Referred Voltage
Noise
f = 1kHz, V
CM
= 0.5V
f = 100kHz
40
30
nV/
THD
Total Harmonic Distortion
f = 1kHz, A
V
= +1
RL = 600k
, V
IN
= 1V
PP
0.089
%
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, and R
L
>
1M
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Condition
Min
(Note 5)
Typ
(Note 4)
Max
(Note 5)
Units
V
OS
Input Offset Voltage
V
CM
= 0.35V, V
+
= 1.7V, V
-
= -1V
0.9
8
9
mV
I
B
Input Bias Current
0.182
35
50
pA
I
S
Supply Current
V
CM
= 0.35V, V
+
= 1.7V, V
-
= -1V
153
250
275
A
CMRR
Common Mode Rejection
Ratio
-0.15V
V
CM
1.35V
62
60
115
dB
PSRR
Power Supply Rejection
Ratio
1.8V
V+
5V
67
62
110
dB
V
CM
Input Common-Mode Voltage
Range
For CMRR
50dB
-0.3
0
1.5
V
A
V
Large Signal Voltage Gain
Sourcing
R
L
= 600
to 0V, V
+
= 1.35V, V
-
=
-1.35V, V
O
= -1V to 1V, V
CM
= 0V
80
75
100
dB
R
L
= 2k
to 0V, V
+
= 1.35V, V
-
=
-1.35V, V
O
= -1V to 1V, V
CM
= 0V
83
77
114
Sinking
R
L
= 600
to 0V, V
+
= 1.35V, V
-
=
-1.35V, V
O
= -1V to 1V, V
CM
= 0V
80
75
98
dB
R
L
= 2k
to 0V, V
+
= 1.35V, V
-
=
-1.35V, V
O
= -1V to 1V, V
CM
= 0V
80
75
99
V
O
Output Swing
R
L
= 600
to 1.35V
V
IN
=
100mV
V
OH
2.550
2.530
2.62
V
V
OL
0.078
0.100
V
R
L
= 2k
to 1.35V
V
IN
=
100mV
V
OH
2.650
2.640
2.675
V
V
OL
0.024
0.045
V
I
O
Output Short Circuit Current
Sourcing,
V
O
= 0V, V
IN
= 100mV
20
15
32
mA
Sinking,
V
O
= 2.7V, V
IN
= -100mV
19
12
24
mA
LMV301
www.national.com
3
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 and R
L
>
1M
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Condition
Typ
(Note 4)
Units
SR
Slew Rate
(Note 6)
0.60
V/s
GBW
Gain Bandwidth Product
1
MHz
m
Phase Margin
65
Deg
G
m
Gain Margin
10
dB
e
n
Input-Referred Voltage
Noise
f = 1kHz, V
CM
= 0.5V
f = 100kHz
40
30
nV/
THD
Total Harmonic Distortion
f = 1kHz, A
V
= +1
R
L
= 600k
, V
IN
= 1V
PP
0.077
%
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, and R
L
>
1M
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Condition
Min
(Note 5)
Typ
(Note 4)
Max
(Note 5)
Units
V
OS
Input Offset Voltage
V
CM
= 0.5V, V
+
= 3V, V
-
= -2V
0.9
8
9
mV
I
B
Input Bias Current
0.182
35
50
pA
I
S
Supply Current
V
CM
= 0.5V, V
+
= 3V, V
-
= -2V
163
260
285
A
CMRR
Common Mode Rejection
Ratio
-1.3V
V
CM
2.5V
62
61
111
dB
PSRR
Power Supply Rejection
Ratio
1.8V
V
+
5V
67
62
110
dB
V
CM
Input Common-Mode
Voltage Range
For CMRR
50dB
-0.3
0
3.8
V
A
V
Large Signal Voltage Gain
Sourcing
R
L
= 600
to 0V, V
+
= 2.5V, V
-
=
-2.5V, V
O
= -2V to 2V, V
CM
= 0V
86
82
117
dB
R
L
= 2k
to 0V, V
+
= 2.5V, V
-
=
-2.5V, V
O
= -2V to 2V, V
CM
= 0V
89
85
116
Sinking
R
L
= 600
to 0V, V
+
= 2.5V, V
-
=
-2.5V, V
O
= -2V to 2V, V
CM
= 0V
80
75
105
dB
R
L
= 2k
to 0V, V
+
= 2.5V, V
-
=
-2.5V, V
O
= -2V to 2V, V
CM
= 0V
80
75
107
V
O
Output Swing
R
L
= 600
to 2.5V
V
IN
=
100mV
V
OH
4.850
4.840
4.893
V
V
OL
0.1
0.150
1.160
V
R
L
= 2k
to 2.5V
V
IN
=
100mV
V
OH
4.935
4.966
V
V
OL
0.034
0.065
0.075
V
I
O
Output Short Circuit
Current
Sourcing,
V
O
= 0V, V
IN
= 100mV
85
68
108
mA
Sinking,
V
O
= 5V, V
IN
= -100mV
60
45
69
mA
LMV301
www.national.com
4
5V AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for T
J
= 25C. V
+
=
5V, V
-
= 0V, V
CM
= V
+
/2, V
O
= 2.5V and R
L
>
1M
. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Condition
Typ
(Note 4)
Units
SR
Slew Rate
(Note 6)
0.66
V/s
GBW
Gain Bandwidth Product
1
MHz
m
Phase Margin
70
Deg
G
m
Gain Margin
15
dB
e
n
Input-Referred Voltage
Noise
f = 1kHz, V
CM
= 1V
f = 100kHz
40
30
nV/
THD
Total Harmonic Distortion
f = 1kHz, A
V
= +1
R
L
= 600
, V
O
= 1V
PP
0.069
%
Note 1: 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 specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.
Note 2: Applies to both single supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the maximum allowed
junction temperature of 150C. Output currents in excess of 45mA over long term may adversely affect reliability.
Note 3: 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
. All numbers apply for packages soldered directly into a PC board.
Note 4: Typical value represent the most likely parametric norm.
Note 5: All limits are guaranteed by testing or statistical analysis.
Note 6: V
+
= 5V. Connected as voltage follower with 5V step input. Number specified is the slower of the positive and negative slew rates.
Note 7: Human body model, 1.5k
in series with 100pF. Machine model, 200
in series with 100pF.
Simplified Schematic
20019302
LMV301
www.national.com
5
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