Data Sheet
LMV321
General
Purpose, Rail-to-Rail Output Amplifier
Rail-to-Rail Amplifiers
FEATURES
n
130μA supply current
n
1MHz gain bandwidth
n
Input voltage range with 5V supply:
-0.2V to 4.2V
n
Output voltage range with 5V supply:
0.065V to 4.99V
n
>
1V/μs slew rate
n
No crossover distortion
n
Fully specified at 2.7V and 5V supplies
n
LMV321: Pb-free TSOT-5
APPLICATIONS
n
Portable/battery-powered applications
n
Mobile communications, cell phones,
pagers
n
ADC buffer
n
Active filters
n
Portable test instruments
n
Signal conditioning
n
Medical Equipment
n
Portable medical instrumentation
LMV321
General
Purpose, Rail-to-Rail Output Amplifier
General Description
The LMV321 is a single channel, low cost, voltage feedback amplifier. The
LMV321 consumes only 130μA of supply current and is designed to operate
from a supply range of 2.7V to 5.5V (±1.35 to ±2.75). The input voltage
range extends 200mV below the negative rail and 800mV below the positive
rail.
The LMV321 is fabricated on a CMOS process. It offers 1MHz gain bandwidth
product and >1V/μs slew rate. The combination of low power, low supply
voltage operation, and rail-to-rail performance make the LMV321 well suited
for battery-powered systems. The LMV321 is packaged in the space saving
TSOT-5 package. TSOT-5 package is pin compatible with the SOT23-5
package.
Typical Performance Examples
Vout vs. Vcm
Slew Rate vs. Supply Voltage
μ
Rev 1A
Ω
V
in
= 1Vpp
Ordering Information
Part Number
LMV321IST5X
Package
TSOT-5
Pb-Free
Yes
RoHS Compliant
Yes
Operating Temperature Range
-40°C to +85°C
Packaging Method
Reel
Moisture sensitivity level for all parts is MSL-1.
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 - Fax. +1 510 668-7001
Data Sheet
LMV321 Pin Configuration
+IN
-V
S
-IN
LMV321 Pin Assignments
1
Pin No.
Pin Name
+IN
-V
S
-IN
OUT
+V
S
Description
Positive input
Negative supply
Negative input
Output
Positive supply
1
2
3
4
1
2
3
+
5
+V
S
-
LMV321
General
Purpose, Rail-to-Rail Output Amplifier
4
OUT
5
Notes:
1.Pin compatible to SOT23-5.
Rev 1A
©2009-2013 Exar Corporation
2/15
Rev 1A
Data Sheet
Absolute Maximum Ratings
The safety of the device is not guaranteed when it is operated above the “Absolute Maximum Ratings”. The device
should not be operated at these “absolute” limits. Adhere to the “Recommended Operating Conditions” for proper de-
vice function. The information contained in the Electrical Characteristics tables and Typical Performance plots reflect the
operating conditions noted on the tables and plots.
LMV321
General
Purpose, Rail-to-Rail Output Amplifier
Parameter
Supply Voltage
Input Voltage Range
Continuous Output Current
Min
Max
Unit
7
V
-V
S
-0.4V
+V
S
V
Output is protected against momentary short circuit
Reliability Information
Parameter
Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering, 10s)
Package Thermal Resistance
5-Lead TSOT
Notes:
Package thermal resistance (q
JA
), JDEC standard, multi-layer test boards, still air.
Min
-65
Typ
Max
150
150
260
Unit
°C
°C
°C
°C/W
221
ESD Protection
Product
Human Body Model (HBM)
Charged Device Model (CDM)
TSOT-5
2kV
2kV
Recommended Operating Conditions
Parameter
Operating Temperature Range
Supply Voltage Range
Min
-40
2.7
Typ
Max
+85
5.5
Unit
°C
V
Rev 1A
©2009-2013 Exar Corporation
3/15
Rev 1A
Data Sheet
Electrical Characteristics at +2.7V
T
A
= 25°C, V
S
= +2.7V, R
f
= R
g
=10 KΩ, R
L
= 10kΩ to V
S
/2, G = 2; unless otherwise noted.
Symbol
V
IO
dV
IO
I
b
I
OS
CMRR
PSRR
CMIR
V
OUT
I
S
GBWP
Φ
m
G
m
e
n
Parameter
Input Offset Voltage
Average Drift
Input Bias Current
Input Offset Current
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Common Mode Input Range
Output Voltage Swing
Supply Current
Gain Bandwidth Product
Phase Margin
Gain Margin
Input Voltage Noise
Conditions
Min
Typ
1.7
5
<1
<1
Max
7
250
50
Units
mV
DC Performance
LMV321
General
Purpose, Rail-to-Rail Output Amplifier
µV/°C
nA
nA
dB
dB
V
1.7
180
170
V
mV
mV
μA
MHz
°
dB
nV/√Hz
0V ≤ V
CM
≤ 1.7V
2.7V ≤ V
+
≤ 5V, V
O
=1V, V
CM
=1V
For V
CM
≤ 50 dB
R
L
= 10kΩ to V
S
/ 2
50
50
0
V
+
-100
63
60
-0.2
1.9
V
+
-10
60
110
AC Performance
C
L
=200 pF
1
60
10
f = 1kHz
46
Notes:
Min max specifications are guaranteed by testing, design, or characterization
Rev 1A
©2009-2013 Exar Corporation
4/15
Rev 1A
Data Sheet
Electrical Characteristics at +5V
T
A
= 25°C, V
S
= +5V, R
f
= R
g
=10kΩ, R
L
= 10kΩ to V
S
/2, G = 2; unless otherwise noted.
Boldface
limits apply at the
temperature extremes.
Symbol
V
IO
dV
IO
I
b
I
OS
CMRR
PSRR
CMIR
A
OL
V
OUT
Parameter
Input Offset Voltage
Average Drift
Input Bias Current
Input Offset Current
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Common Mode Input Range
Open-Loop Gain
Output Voltage Swing
Conditions
Min
Typ
1.7
5
<1
<1
Max
7
9
250
500
50
150
Units
DC Performance
LMV321
General
Purpose, Rail-to-Rail Output Amplifier
mV
µV/°C
nA
nA
dB
dB
V
0V ≤ V
CM
≤ 4V
2.7V ≤ V
+
≤ 5V, V
O
=1V, V
CM
=1V
For V
CM
≤ 50 dB
R
L
= 2kΩ
R
L
= 2kΩ to V
S
/ 2
50
50
0
15
10
V
+
-300
V
+
-400
65
60
-0.2
4.2
100
V
+
-40
120
300
400
4
V
V/mV
mV
mV
mV
R
L
= 10kΩ to V
S
/ 2
V
+
-100
V
+
-200
V
+
-10
65
180
280
mV
mA
mA
I
SC
I
S
Short Circuit Output Current
Supply Current
Sourcing V
O
=0V
Sinking V
O
=5V
5
10
60
160
130
250
350
μA
AC Performance
SR
GBWP
Φ
m
G
m
e
n
Slew Rate
Gain Bandwidth Product
Phase Margin
Gain Margin
Input Voltage Noise
f = 1kHz
C
L
=200 pF
>1
1
60
10
39
V/µs
MHz
°
dB
nV/√Hz
Rev 1A
Notes:
Min max specifications are guaranteed by testing, design, or characterization
©2009-2013 Exar Corporation
5/15
Rev 1A
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