RS8551XF

Overview

The RS8551XF is a single-channel CMOS operational amplifier manufactured by Runic Technology. It features a low input offset voltage of 1.5 µV and an input bias current of 1 pA. The device operates within a supply voltage range of 2.7 V to 5.5 V, consuming 640 µA of supply current. It provides a gain-bandwidth product of 4.5 MHz and a slew rate of 2.7 V/µs. The output supports full swing capabilities with a maximum output current of 50 mA per channel. It is housed in a SOT-23-5 package and functions reliably across a temperature range of -40°C to 125°C.

Feature Summary

• CMOS architecture enabling low power consumption and high input impedance
• Full-swing output capability for maximizing dynamic range
• Low input offset voltage and bias current for precision signal conditioning

Applications

• Precision instrumentation circuits
• Signal buffering in data acquisition systems
• Sensor interface applications requiring low drift

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into the assembly process. Ensure the selected variant matches the required operating temperature range and package dimensions for the target PCB layout.

Selection Notes

Select this component when a single-channel amplifier with rail-to-rail output is required alongside ultra-low input bias current. The CMOS technology offers a favorable trade-off between speed and power consumption compared to bipolar alternatives. Consider the 4.5 MHz bandwidth limit when designing for higher frequency signal processing tasks.

Part Context

The RS8551XF belongs to the RS855x series of precision amplifiers from Runic Technology. This series focuses on providing high accuracy in compact surface-mount packages suitable for portable and battery-powered devices. The family typically includes variants with different pin configurations or performance optimizations while maintaining the core CMOS architecture.

Replacement Considerations

Consult official substitution guides for direct pin-compatible alternatives within the RS855x series or comparable single-channel CMOS op-amps from other manufacturers. Verify that any substitute maintains the 1.5 µV offset voltage and 1 pA bias current specifications to preserve circuit accuracy.