LMV791 17 MHz, Low Noise, CMOS Input, 1.8V Operational Amplifier
September 2005
LMV791
17 MHz, Low Noise, CMOS Input, 1.8V Operational
Amplifier
General Description
The LMV791 low noise, CMOS input operational amplifier
while
offers a low input voltage noise density of 5.8 nV/
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
5.5V and can operate from a single supply. The LMV791
features a rail-to-rail output stage capable of driving a 600鈩?/div>
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鈥檚 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
鈥?/div>
@
10 k鈩?load
25 mV from rail
35 mV from rail
鈥?/div>
@
2 k鈩?load
n
Total harmonic distortion
0.01%
@
1 kHz, 600鈩?/div>
n
Temperature range
鈭?0
o
C to 125
o
C
Applications
n
n
n
n
n
Photodiode Amplifiers
Active filters and buffers
Low noise signal processing
Medical Instrumentation
Sensor interface applications
Typical Application
20116869
Photodiode Transimpedance Amplifier
20116839
Input Referred Voltage Noise vs. Frequency
漏 2005 National Semiconductor Corporation
DS201168
www.national.com
next