LM2903DR2G

Overview

The LM2903DR2G is a dual independent precision voltage comparator manufactured by onsemi, housed in an SOIC-8 surface-mount package. It supports single supply operation from 2.0 Vdc to 36 Vdc and split supplies of ±1.0 Vdc to ±18 Vdc. The device features open-collector outputs capable of sinking up to 16 mA. Electrical characteristics include a maximum input offset voltage of 7.0 mV at 25°C and a typical response time of 1.5 µs. Operating ambient temperature range extends from -40°C to +105°C.

Feature Summary

• Dual independent precision voltage comparators designed for single or split supply operation
• Open-collector output configuration compatible with DTL, ECL, TTL, MOS, and CMOS logic levels
• Input common mode range includes ground level, allowing signals down to zero volts
• Differential input voltage range equals the power supply voltage without damaging inputs

Applications

• Consumer electronics signal processing
• Automotive electronic control circuits
• Industrial instrumentation and sensing
• Zero crossing detection systems

Procurement Notes

Verify the specific suffix DR2G corresponds to the SOIC-8 tape and reel packaging format containing 2500 units per reel. Confirm that the operating temperature grade matches the required industrial range of -40°C to +105°C. Ensure compliance with RoHS standards and lead-free requirements as specified in the ordering information section of the datasheet.

Selection Notes

Select this component when dual comparators are required within a single integrated circuit footprint. The wide supply voltage range accommodates various system architectures. The low input bias current minimizes loading effects on high-impedance sensor interfaces. Verify that the open-collector output requirement aligns with the downstream logic interface design.

Part Context

This part belongs to the LM393 series family, which encompasses multiple variants including LM293, LM393E, LM2903E, and LM2903V. These devices share identical internal architecture but differ in manufacturing sites, temperature grades, and automotive qualification status. The LM2903 variant specifically targets extended industrial temperature applications compared to commercial grade options.

Replacement Considerations

LM2903EDR2G offers similar electrical performance with potentially tighter offset voltage specifications. LM2903VDG provides extended temperature capability up to +125°C in the same package. NCV2903DR2G is qualified for automotive applications requiring AEC-Q100 certification and PPAP capability.