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LMV791 Datasheet

1.8V Operational Amplifier

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September 2005
LMV791
17 MHz, Low Noise, CMOS Input, 1.8V Operational
Amplifier
General Description
The LMV791 low noise, CMOS input operational amplifier
offers a low input voltage noise density of 5.8 nV/
while
consuming only 1.15 mA of quiescent current. The LMV791
is a unity gain stable op amp and has a gain bandwidth of 17
MHz. The LMV791 has a supply voltage range of 1.8V to
www.DataSheet4U.c5o.5mV and can operate from a single supply. The LMV791
features a rail-to-rail output stage capable of driving a 600
load and sourcing as much as 60 mA of current.
The LMV791 provides optimal performance in low voltage
and low noise systems. A CMOS input stage, with typical
input bias currents in the range of a few femtoAmperes, and
an input common mode voltage range which includes
ground make the LMV791 ideal for low power sensor appli-
cations. The LMV791 has a built-in enable feature which can
be used to optimize power dissipation in low power applica-
tions.
The LMV791 is manufactured using National’s advanced
VIP50 process and is available in a 6-pin TSOT23 package.
Features
(Typical 5V supply, unless otherwise noted)
n Input referred voltage noise
5.8 nV/
n Input bias current
0.1 pA
n Unity gain bandwidth
17 MHz
n Supply current
1.15 mA
n Guaranteed 2.5V and 5.0V performance
n Rail-to-rail output swing
@ 10 kload
@ 2 kload
25 mV from rail
35 mV from rail
n Total harmonic distortion
n Temperature range
0.01% @1 kHz, 600
−40oC to 125oC
Applications
n Photodiode Amplifiers
n Active filters and buffers
n Low noise signal processing
n Medical Instrumentation
n Sensor interface applications
Typical Application
20116869
Photodiode Transimpedance Amplifier
20116839
Input Referred Voltage Noise vs. Frequency
© 2005 National Semiconductor Corporation DS201168
www.national.com


National Semiconductor Electronic Components Datasheet

LMV791 Datasheet

1.8V 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)
Input/Output Pin Voltage
Storage Temperature Range
Junction Temperature (Note 3)
±2000V
±200V
0.3V
6.0V
V+ +0.3V, V−0.3V
−65˚C to 150˚C
+150˚C
Soldering Information
Infrared or Convection (20 sec)
Wave Soldering Lead Temp (10
sec)
235˚C
260˚C
Operating Ratings (Note 1)
Temperature Range (Note 3)
−40˚C to 125˚C
Supply Voltage (V+ – V)
−40˚C TA 125˚C
2V to 5.5V
0˚C TA 125˚C
1.8V to 5.5V
Package Thermal Resistance (θJA (Note 3))
6-Pin TSOT23
170˚C/W
www.DataSheet4U.com 2.5V Electrical Characteristics
Unless otherwise specified, all limits are guaranteed for TA = 25˚C, V+ = 2.5V, V= 0V, VCM = V+/2, VEN = V+. Boldface limits
apply at the temperature extremes.
Symbol
Parameter
VOS Input Offset Voltage
Conditions
Min
(Note 5)
Typ
(Note 4)
0.1
Max
(Note 5)
±1.35
±1.65
Units
mV
TC VOS Input Offset Average Drift
IB Input Bias Current
(Note 6)
VCM = 1.0V
(Notes 7, 8)
1.0
0.05
µV/˚C
0.5
pA
50
IOS
CMRR
PSRR
CMVR
Input Offset Current
Common Mode Rejection
Ratio
Power Supply Rejection
Ratio
Input Common-Mode Voltage
Range
(Note 8)
0V VCM 1.4V
2V V+ 5.5V, VCM = 0V
1.8V V+ 5.5V, VCM = 0V
CMRR 60 dB
CMRR 55 dB
80
75
80
75
80
−0.3
-0.3
10
94
100
98
1.5
1.5
fA
dB
dB
V
AVOL
VOUT
IOUT
IS
Large Signal Voltage Gain
Output Swing High
VOUT = 0.15V to 2.2V,
RLOAD = 2 kto V+/2
VOUT = 0.15V to 2.2V,
RLOAD = 10 kto V+/2
RLOAD = 2 kto V+/2
RLOAD = 10 kto V+/2
Output Swing Low
RLOAD = 2 kto V+/2
RLOAD = 10 kto V+/2
Output Short Circuit Current
Supply Current per Amplifier
Sourcing to V
VIN = 200 mV (Note 9)
Sinking to V+
VIN = –200 mV (Note 9)
Enable Mode VEN > 2.1
Shutdown Mode VEN < 0.4
85 98
80
88 110
84
dB
75 25
82
65 20
71 mV from
30 75 rail
78
15 65
67
35 47
28
7 15
5
mA
0.95
1.30
1.65
mA
0.02
1
5
µA
www.national.com
2


Part Number LMV791
Description 1.8V Operational Amplifier
Maker National Semiconductor
Total Page 16 Pages
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