LMV321-N, LMV321-N-Q1, LMV358-N, LMV358-N-Q1
LMV324-N, LMV324-N-Q1
SNOS012I –AUGUST 2000–REVISED FEBRUARY 2013
www.ti.com
APPLICATION INFORMATION
BENEFITS OF THE LMV321-N/LMV358-N/LMV324-N
Size
The small footprints of the LMV321-N/LMV358-N/LMV324-N packages save space on printed circuit boards, and
enable the design of smaller electronic products, such as cellular phones, pagers, or other portable systems. The
low profile of the LMV321-N/LMV358-N/LMV324-N make them possible to use in PCMCIA type III cards.
Signal Integrity
Signals can pick up noise between the signal source and the amplifier. By using a physically smaller amplifier
package, the LMV321-N/LMV358-N/LMV324-N can be placed closer to the signal source, reducing noise pickup
and increasing signal integrity.
Simplified Board Layout
These products help you to avoid using long PC traces in your PC board layout. This means that no additional
components, such as capacitors and resistors, are needed to filter out the unwanted signals due to the
interference between the long PC traces.
Low Supply Current
These devices will help you to maximize battery life. They are ideal for battery powered systems.
Low Supply Voltage
Texas Instruments provides guaranteed performance at 2.7V and 5V. These guarantees ensure operation
throughout the battery lifetime.
Rail-to-Rail Output
Rail-to-rail output swing provides maximum possible dynamic range at the output. This is particularly important
when operating on low supply voltages.
Input Includes Ground
Allows direct sensing near GND in single supply operation.
Protection should be provided to prevent the input voltages from going negative more than −0.3V (at 25°C). An
input clamp diode with a resistor to the IC input terminal can be used.
Ease of Use and Crossover Distortion
The LMV321-N/LMV358-N/LMV324-N offer specifications similar to the familiar LM324-N. In addition, the new
LMV321-N/LMV358-N/LMV324-N effectively eliminate the output crossover distortion. The scope photos in
Figure 49 and Figure 50 compare the output swing of the LMV324-N and the LM324-N in a voltage follower
configuration, with VS = ± 2.5V and RL (= 2 kΩ) connected to GND. It is apparent that the crossover distortion
has been eliminated in the new LMV324-N.
Figure 49. Output Swing of LMV324
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Product Folder Links: LMV321-N LMV321-N-Q1 LMV358-N LMV358-N-Q1 LMV324-N LMV324-N-Q1
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