LMV951_14 Datasheet, PDF (1/24 Pages) National Semiconductor (TI) – 2.7 MHz, Rail-to-Rail Input and Output Amplifier with Shutdown Option

LMV951
www.ti.com
SNOSAI3C – OCTOBER 2006 – REVISED APRIL 2013
LMV951 1V, 2.7 MHz, Rail-to-Rail Input and Output Amplifier with Shutdown Option
Check for Samples: LMV951
FEATURES
1
•2 (Typical 1.0V Supply, unless Otherwise Noted)
• Ensured 1V Single Supply Operation
• Wide Bandwidth
• No V_OS Glitch over the Input CMVR
• No Input I_BIAS Current Reversal over V_CM
Range
• Buffered Output Stage
• High Output Drive Capability
• Output Short Circuit
– Sink Current 35 mA
– Source Current 45 mA
• Rail-to-Rail Buffered Output
– At 600Ω Load 32 mV from Either Rail
– At 2 kΩ Load 12 mV from Either Rail
• Temperature Range −40°C to 125°C
DESCRIPTION
The LMV951 amplifier is capable of operating at
supply voltages from 0.9V to 3V with specified specs
at 1V and 1.8V single supply.
The input common mode range extends to both
power supply 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 loading. 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.
APPLICATIONS
• Battery Operated Systems
• Battery Monitoring
• Supply Current Monitoring
VIRTUAL GROUND CIRCUIT
1V
R₁
V⁺
+
R₂
-
V^-
SD
C₁
.01 PF
VIRTUAL GROUND
C₂
1 PF
160
140
120
100
80
60
40
20
0
-20
1
Open Loop Gain and Phase
160
V⁺ = 1V
140
120
PHASE
100
80
60
GAIN
40
20
0
-20
10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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