General Description
The LM392 series consists of 2 independent building block
circuits. One is a high gain, internally frequency compensated
operational amplifier, and the other is a precision
voltage comparator. Both the operational amplifier and the
voltage 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 commonmode
input down to ground when operating from a single
power supply. Operation from split power supplies is also
possible and the low power supply current is independent of
the magnitude 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 circuits.
Both circuits can be operated directly from the standard
5 VDC power supply voltage used in digital systems,
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.

Features
n Wide power supply voltage range
Single supply: 3V to 32V
Dual supply: ±1.5V to ±16V
n Low supply current drain—essentially independent of
supply voltage: 600 μA
n Low input biasing current: 50 nA
n Low input offset voltage: 2 mV
n Low input offset current: 5 nA
n Input common-mode voltage range includes ground
n Differential input voltage range equal to the power
supply voltage
ADDITIONAL OP AMP FEATURES
n Internally frequency compensated for unity gain
n Large DC voltage gain: 100 dB
n Wide bandwidth (unity gain): 1 MHz
n Large output voltage swing: 0V to V+ − 1.5V
ADDITIONAL COMPARATOR FEATURES
n Low output saturation voltage: 250 mV at 4 mA
n Output voltage compatible with all types of logic systems