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LMV422 Datasheet

Dual Rail-to-Rail Output Operational Amplifier

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February 2005
www.DataSheet4U.com
LMV422
Dual Rail-to-Rail Output Operational Amplifier with
Power Select
General Description
The LMV422 dual rail-to-rail output amplifier offers a power
select pin (PS) that allows the user to select one of two
power modes depending on the level of performance de-
sired. This is ideal for AC coupled circuits where the circuit
needs to be kept active to maintain a quiescent charge on
the coupling capacitors with minimum power consumption.
For portable applications, the LMV422 operates in low power
mode consuming only 2 µA of supply current per channel at
a bandwidth of 27 kHz. This allows the user to reduce the
power consumption of an amplifier while maintaining an
active circuit. For additional bandwidth and output current
drive the amplifier can be switched to full power mode with 8
MHz bandwidth while consuming only 400 µA per channel.
The LMV422 features a rail-to-rail output voltage swing in
addition to an input common mode range that includes
ground. The LMV422 is designed for closed loop gains of
plus two (or minus one) or greater. The LMV422 is offered in
10-Pin MSOP miniature package to ease the adoption in
applications where board area is at a premium.
Features
n Supply voltage
n Supply current per channel
— Low power mode
— Full power mode
n Input common mode voltage range
n CMRR
n Output voltage swing
n Input offset voltage
n Bandwidth
— Low power mode
— Full power mode
n Stable for AV +2 or AV −1
Applications
n AC coupled circuits
n Portable instrumentation
n Smoke detectors
2.7V to 5.5V
2 µA
400 µA
−0.3V to 3.8V
85 dB
Rail-to-Rail
1 mV
27 kHz
8 MHz
Typical Application
AC Coupled Application
20109835
© 2005 National Semiconductor Corporation DS201098
www.national.com


National Semiconductor Electronic Components Datasheet

LMV422 Datasheet

Dual Rail-to-Rail Output Operational Amplifier

No Preview Available !

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)
Human Body
Machine Model
VIN Differential
Supply Voltage (V+ - V)
Storage Temperature Range
Junction Temperature (Note 4)
2000V
200V
±2V
2.5V to 5.5V
−65˚C to +150˚C
+150˚C
Soldering Information
Infrared or Convection (20 swecw)w.DataSheet4U.2c3o5m˚C
Wave Soldering Lead Temp. (10 sec)
260˚C
Operating Ratings (Note 1)
Supply Voltage (V+ – V)
Temperature Range
Package Thermal Resistance (θJA)
10-Pin MSOP
2.7V to 5.5V
−40˚C to +85˚C
210˚C/W
5V Full Power Mode Electrical Characteristics
Unless otherwise specified, all limits guaranteed for at TJ = 25˚C, V+ = 5V, V= 0V, VCM = VO = V+/2, PS = V. Boldface lim-
its apply at the temperature extremes.
Symbol
Parameter
Conditions
Min Typ Max
(Note 6) (Note 5) (Note 6)
Units
VOS Input Offset Voltage
VOS
TC VOS
IB
CMRR
PSRR
Input Offset Voltage Difference VOS in Full Power Mode −
VOS in Low Power Mode
Input Offset Average Drift
(Note 9)
Input Bias Current
Common Mode Rejection
Ratio
VCM Stepped from 0V to 3.5V
Power Supply Rejection Ratio V+ = 2.7V to 5V
14
mV
5.5
0.1 1
mV
2
5
68 85
60
66 90
60
µV/C
pA
dB
dB
CMVR
Input Common Mode Voltage CMRR 50 dB
Range
−0.3
3.8
V
AVOL
VO
Large Signal Voltage Gain
Output Swing High
Output Swing Low
VO = 0.75V to 4.25V
RL = 1 M
VO = 0.75V to 4.25V
RL = 10 k
RL = 10 kto V+/2
RL = 1 Mto V+/2
RL = 10 kto V+/2
RL = 1 Mto V+/2
72 100
70
75 102
70
4.93
4.97
4.88
4.94
4.98
4.89
33 180
230
25 120
170
dB
V
mV
ISC Output Short Circuit Current Sourcing, VO = 0V
VID = 100 mV
Sinking, VO = 5V
VID = −100 mV
IS Supply Current Per Channel PS 0.5V
35
9 16
mA
400 650
900
µA
SR
GBW
Slew Rate
Gain Bandwidth Product
VO = 3V, AV = +2
1.8 3.8
8
V/µs
MHz
en Input-Referred Voltage Noise f = 100 kHz
f = 1 kHz
20
nV/
25
www.national.com
2


Part Number LMV422
Description Dual Rail-to-Rail Output Operational Amplifier
Maker National Semiconductor
Total Page 10 Pages
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