LM2903AVQDRG4

Overview

The LM2903AVQDRG4 is a dual differential voltage comparator manufactured by Texas Instruments, designed for single or dual power supply operation. It features an SOIC-8 surface-mount package with 14 pins in the broader family context but specifically utilizes an 8-pin configuration for this dual-channel device. The component operates within a single supply voltage range of 2 V to 32 V and supports standard dual supply voltages including ±3 V, ±5 V, ±9 V, ±12 V, and ±15 V. Key electrical parameters include a typical response time of 1.3 µs, a maximum input offset voltage of 4 mV, and a quiescent current ranging from 1 mA to 2.5 mA. It functions across an extended temperature range from -40 °C to +125 °C.

Feature Summary

• Dual differential voltage comparison capability with open collector and open drain output configurations
• Wide single-supply operating voltage range supporting diverse power architectures
• Extended industrial temperature rating suitable for harsh environmental conditions

Applications

• Automotive electronic systems requiring AEC-Q100 qualified components
• General-purpose analog signal processing circuits
• Voltage monitoring and threshold detection applications

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the package type matches the required PCB footprint, noting potential variations between SOIC and TSSOP forms within the same series. Ensure the automotive grade designation aligns with project reliability standards before finalizing procurement specifications.

Selection Notes

Select this component when dual independent comparators are required in a compact surface-mount format. Consider the 1.3 µs propagation delay for timing-sensitive designs. Evaluate the 4 mV input offset voltage against system accuracy requirements. Verify that the open-drain/open-collector outputs match the pull-up resistor strategy of the target logic interface.

Part Context

This device belongs to the LM2903V series of dual differential comparators from Texas Instruments. It shares functional similarities with the LM193, LM293, and LM393 families but offers enhanced automotive qualification through the Q1 designation. The component serves as a robust alternative to operational amplifiers in switching applications due to its optimized response characteristics.

Replacement Considerations

LM2903AVQDRQ1 is a confirmed substitute part number within the same automotive-grade family.