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LMV951 Datasheet

Rail-to-Rail Input and Output Amplifier

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October 2006
LMV951
1V, 2.7 MHz, Rail-to-Rail Input and Output Amplifier with
Shutdown Option
General Description
The LMV951 amplifier is capable of operating at supply
voltages from 0.9V to 3V with guaranteed specs at 1V and
1.8V single supply.
The input common mode range extends to both power sup-
ply rails without the offset glitch and input bias current phase
reversal inherent to most rail to rail input amplifiers.
Contrary to a conventional rail to rail output amplifier the
LMV951 has a buffered output stage providing an open loop
gain which is relatively unaffected by resistive output load-
ing. At 1V supply voltage, the LMV951 is able to source and
sink in excess of 35 mA and offers a gain bandwidth product
of 2.7 MHz.
In shutdown mode the LMV951 consumes less than 50 nA of
supply current.
Features
(Typical 1.0V supply, unless otherwise noted)
n Guaranteed 1V single supply operation
n Wide bandwidth
n No VOS glitch over the input CMVR
n No input IBIAS current reversal over VCM range
n Buffered output stage
n High output drive capability
n Output short circuit
— Sink current
35 mA
— Source current
45 mA
n Rail-to-rail buffered output
@ 600load
32 mV from either rail
@ 2 kload
12 mV from either rail
n Temperature range
−40˚C to 125˚C
Applications
n Battery operated systems
n Battery monitoring
n Supply current monitoring
Virtual Ground Circuit
Open Loop Gain and Phase
20123145
© 2006 National Semiconductor Corporation DS201231
20123154
www.national.com


National Semiconductor Electronic Components Datasheet

LMV951 Datasheet

Rail-to-Rail Input and Output 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 Model
Machine Model
Supply Voltage (V+ – V)
VIN Differential
Voltage at Input/Output Pin
2000V
200V
3.1V
±0.3V
V+ +0.3V, V−0.3V
Current at Input Pin
Junction Temperature (Note 3)
Mounting Temperature
Infrared or Convection (20 sec)
±10 mA
+150˚C
235˚C
Operating Ratings (Note 1)
Temperature Range (Note 3)
Supply Voltage
Thermal Resistance (θJA) (Note 3)
−40˚C to +125˚C
0.9V to 3V
170˚C/W
1V Electrical Characteristics (Note 4)
Unless otherwise specified, all limits guaranteed for at TA = 25˚C, V+ = 1, V= 0V, VCM = 0.5V, Shutdown = 0V, and
RL = 1 M. Boldface limits apply at the temperature extremes.
Symbol
Parameter
Conditions
Min Typ Max
(Note 5) (Note 6) (Note 5)
Units
VOS Input Offset Voltage
1.5 2.8
mV
3.0
TC VOS
IB
Input Offset Average Drift
Input Bias Current
0.15
32
µV/˚C
80 nA
85
IOS
CMRR
PSRR
Input Offset Current
Common Mode Rejection
Ratio
0V VCM 1V
0.1V VCM 1V
Power Supply Rejection Ratio 1V V+ 1.8V, VCM = 0.5V
1V V+ 3V, VCM = 0.5V
0.2
67 77
55
76 85
73
70 92
67
68 85
65
nA
dB
dB
VCM Input Common-Mode Voltage CMRR 67 dB
Range
CMRR 55 dB
0 1.2
V
0 1.2
AV
VOUT
Large Signal Voltage Gain
Output Voltage Swing High
VOUT = 0.1V to 0.9V
RL = 600to 0.5V
VOUT = 0.1V to 0.9V
RL = 2 kto 0.5V
RL = 600to 0.5V
90 106
85
90 112
86
50 25
62
dB
Output Voltage Swing Low
RL = 2 kto 0.5V
RL = 600to 0.5V
25 12
36
70 32
85
mV from
rail
RL = 2 kto 0.5V
35 10
40
IOUT
IS
Output Short Circuit Current
(Note 7)
Supply Current
Sourcing
VO = 0V, VIN(DIFF) = ±0.2V
Sinking
VO = 1V, VIN(DIFF) = ±0.2V
Active Mode VSD <0.4V
Shutdown Mode VSD >0.6V
20 45
15
20 35
13
mA
370
0.01
480
520
1.0
3.0
µA
SR Slew Rate
(Note 8)
1.4 V/µs
www.national.com
2


Part Number LMV951
Description Rail-to-Rail Input and Output Amplifier
Maker National Semiconductor
Total Page 17 Pages
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