LM2924 National Semiconductor, LM2924 Datasheet

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LM2924

Manufacturer Part Number
LM2924
Description
Low Power Operational Amplifier/Voltage Comparator
Manufacturer
National Semiconductor
Datasheet
© 1999 National Semiconductor Corporation
LM392/LM2924
Low Power Operational Amplifier/Voltage Comparator
General Description
The LM392 series consists of 2 independent building block
circuits. One is a high gain, internally frequency compen-
sated operational amplifier, and the other is a precision volt-
age comparator. Both the operational amplifier and the volt-
age comparator have been specifically designed to operate
from a single power supply over a wide range of voltages.
Both circuits have input stages which will common-mode in-
put down to ground when operating from a single power sup-
ply. Operation from split power supplies is also possible and
the low power supply current is independent of the magni-
tude of the supply voltage.
Application areas include transducer amplifier with pulse
shaper, DC gain block with level detector, VCO, as well as all
conventional operational amplifier or voltage comparator cir-
cuits. Both circuits can be operated directly from the stan-
dard 5 V
and the output of the comparator will interface directly with
either TTL or CMOS logic. In addition, the low power drain
makes the LM392 extremely useful in the design of portable
equipment.
Advantages
n Eliminates need for dual power supplies
n An internally compensated op amp and a precision
n Allows sensing at or near ground
Connection Diagram
comparator in the same package
DC
power supply voltage used in digital systems,
DS007793
(Amplifier B = Operational Amplifier)
Order Number LM392M or LM2924M
Order Number LM392N or LM2924N
See NS Package Number M08A
See NS Package Number N08E
(Amplifier A = Comparator)
Dual-In-Line Package
(Top View)
n Power drain suitable for battery operation
n Pin-out is the same as both the LM358 dual op amp and
Features
n Wide power supply voltage range
n Low supply current drain — essentially independent of
n Low input biasing current:
n Low input offset voltage:
n Low input offset current:
n Input common-mode voltage range includes ground
n Differential input voltage range equal to the power
n Internally frequency compensated for unity gain
n Large DC voltage gain:
n Wide bandwidth (unity gain):
n Large output voltage swing:
n Low output saturation voltage:
n Output voltage compatible with all types of logic systems
the LM393 dual comparator
supply voltage:
supply voltage
ADDITIONAL OP AMP FEATURES
ADDITIONAL COMPARATOR FEATURES
Single supply:
Dual supply:
DS007793-1
±
600 µA
1.5V to
3V to 32V
100 dB
±
5 nA
2 mV
16V
50 nA
0V to V
1 MHz
250 mV at 4 mA
+
− 1.5V
www.national.com
April 1998

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