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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8SOP
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：2
- Output Type：Open-Collector
- Voltage - Supply, Single/Dual (±)：3V ~ 32V, ±1.5V ~ 16V
- Voltage - Input Offset (Max)：4.5mV @ 1.4V
- Current - Input Bias (Max)：0.05µA @ 1.4V
- Current - Output (Typ)：16mA @ 5V
- Current - Quiescent (Max)：1mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-40°C ~ 125°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SOP-J
- Grade：-
- Qualification：-
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Overview
The LM2903FJ-E2 is a dual ground-sense analog comparator manufactured by ROHM Semiconductor. It operates within a supply voltage range of 3 V to 32 V and consumes 600 uA of operating current. The device features an open collector output capable of sourcing 16 mA per channel, with a typical response time of 1 us. Input characteristics include a maximum offset voltage of 4.5 mV and an input bias current of 250 nA. It functions reliably across a temperature range of -40 C to +125 C and is housed in an SOP-8 surface-mount package.
Feature Summary
- Ground-sense input and output capability allowing signals near the negative rail
- Open collector output structure for flexible logic interfacing
- Wide operating supply voltage range supporting diverse power systems
Applications
- General purpose voltage monitoring circuits
- Threshold detection applications
- Over-voltage protection schemes
Procurement Notes
Verify the specific suffix E2 against the manufacturer's latest datasheet to confirm pinout compatibility and RoHS status. Confirm the SOP-8 package dimensions match the target PCB footprint. Ensure the open collector output requirements align with the system pull-up configuration before finalizing procurement.
Selection Notes
Select this component when low power consumption and ground-referenced signal handling are required. The dual-channel configuration suits space-constrained designs needing two independent comparison functions. Verify that the 16 mA output drive capability meets the load requirements without external buffering.
Part Context
This part belongs to the LM2903 series of dual comparators from ROHM Semiconductor. It shares functional similarities with other industry-standard dual comparators but offers specific ground-sense input characteristics. The SOP-8 package provides a compact solution for surface-mount assembly processes.
Replacement Considerations
Cross-reference with LM2903 variants from other manufacturers for pin-compatible alternatives. Verify electrical parameter equivalence, particularly offset voltage and response time, before substituting.
