LM2903 Comparator: Datasheet, Schematic, and Application

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The LM2903 consists of two independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages. Operation from dual supplies also is possible as long as the difference between the two supplies is 2 V to 36 V, and Vcc is at least 1.5 V more positive than the input common-mode voltage. The current drain is independent of the supply voltage. The outputs can be connected to other open-collector outputs to achieve wired-AND relationships.

Texas Instruments LM2903P technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments LM2903P.

●Single-Supply or Dual Supplies

●Wide Range of Supply Voltage

一Maximum Rating:2 V to 36 V

一Tested to 30 V: Non-V Devices

一Tested to 32 V: V-Suffix Devices

●Low Supply-Current Drain Independent of Supply Voltage: 0.4 mA (Typical) Per Comparator

●Low Input Bias Current: 25 nA (Typical)

●Low Input Offset Current: 3 nA (Typical) (LM139)

●Low Input Offset Voltage: 2 mV (Typical)

●Common-Mode Input Voltage Range Includes Ground

●Differential Input Voltage Range Equal to Maximum-Rated Supply Voltage: +36 V

●Low Output Saturation Voltage

●Output Compatible With TTL, MOS, and CMOS

●On Products Compliant to MIL -PRF -38535, All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters.

LM2903 will typically be used to compare a single signal to a reference or two signals against each other. Many users take advantage of the open-drain output to drive the comparison logic output to a logic voltage level to an MCU or logic device. The wide supply range and high voltage capability make LM2903 optimal for level shifting to a higher or lower voltage.

The typical application circuit for LM2903 is shown below:

lm2903 Typical Application

As the functional block diagram is shown below, the LM2903 is a dual comparator with the ability to operate up to 36 V on the supply pin. This standard device has proven ubiquity and versatility across a wide range of applications. This is due to the very wide supply voltages range (2 V to 36 V), low Iq and fast response of the devices. The open-drain output allows the user to configure the output's logic low voltage (VOL) and can be used to enable the comparator to be used in AND functionality.

LM2903 Functional Block Diagram

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Download datasheets and manufacturer documentation for Texas Instruments LM2903P.