LMV422MM NSC [National Semiconductor], LMV422MM Datasheet

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LMV422MM

Manufacturer Part Number
LMV422MM
Description
Dual Rail-to-Rail Output Operational Amplifier with
Manufacturer
NSC [National Semiconductor]
Datasheet

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© 2005 National Semiconductor Corporation
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.
Typical Application
DS201098
AC Coupled Application
Features
n Supply voltage
n Supply current per channel
n Input common mode voltage range
n CMRR
n Output voltage swing
n Input offset voltage
n Bandwidth
n Stable for A
Applications
n AC coupled circuits
n Portable instrumentation
n Smoke detectors
— Low power mode
— Full power mode
— Low power mode
— Full power mode
V
≥ +2 or A
V
≤ −1
20109835
February 2005
−0.3V to 3.8V
www.national.com
2.7V to 5.5V
Rail-to-Rail
400 µA
27 kHz
8 MHz
85 dB
1 mV
2 µA

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LMV422MM Summary of contents

Page 1

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 ...

Page 2

Absolute Maximum Ratings 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 V Differential IN + − Supply Voltage ( Storage ...

Page 3

Full Power Mode Electrical Characteristics Unless otherwise specified, all limits guaranteed for at T its apply at the temperature extremes. Symbol Parameter i Input-Referred Current Noise n t Time from Low Power Mode LF to Full Power Mode TH ...

Page 4

... Note 8: Slew rate is the average of the rising and falling slew rates. Note 9: Offset voltage average drift determined by dividing the change in V Connection Diagram Ordering Information Package Part Number LMV422MM 10-Pin MSOP LMV422MMX Simplified Schematic www.national.com , θ , and T . The maximum allowable power dissipation at any ambient temperature is J(MAX temperature extremes into the total temperature change ...

Page 5

Typical Performance Characteristics − Full Power Mode for Low Power Mode. Supply Current vs. Supply Voltage per Channel (Full Power Mode) Gain and Phase vs. Frequency Gain and Phase vs. Frequency Unless otherwise specified, V Supply Current ...

Page 6

Typical Performance Characteristics − Full Power Mode for Low Power Mode. (Continued) Phase Margin vs. Gain for Various Capacitive Load Input Offset Voltage vs. Output Voltage Noise vs. Frequency www.national.com Unless otherwise specified, V Phase Margin vs. ...

Page 7

Typical Performance Characteristics − Full Power Mode for Low Power Mode. (Continued) Small Signal Non-Inverting Response Small Signal Non-Inverting Response Large Signal Non-Inverting Response Unless otherwise specified, V Small Signal Non-Inverting Response 20109820 Small Signal Non-Inverting Response ...

Page 8

Application Information The LMV422 is a dual rail-to-rail output amplifier that can be switched between two active power modes. The power se- lect pin (PS) provides a method to optimize the power con- sumption, bandwidth and short circuit current. When ...

Page 9

Application Information Figure 3a AC COUPLED CIRCUITS The two power modes makes the LMV422 ideal for AC coupled circuit where the circuit needs to be kept active to maintain a quiescent charge on the coupling capacitors with minimum power consumption. ...

Page 10

Physical Dimensions inches (millimeters) unless otherwise noted National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and ...

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