RS8521XF

Overview

The RS8521XF is a single-channel, zero-drift CMOS operational amplifier manufactured by Jiangsu Runic Technology. It features rail-to-rail input and output capabilities with a supply voltage range of 2.5V to 5.5V (±1.25V to ±2.75V). Key electrical parameters include a maximum input offset voltage of 5μV, an input offset drift of 0.005μV/°C, and a gain bandwidth product of 350kHz. The device offers a slew rate of 0.17V/μs, low noise of 3.2μVp-p (0.01Hz to 10Hz), and high common-mode rejection ratio of 130dB. It operates within a temperature range of -40°C to +125°C and is housed in a compact SOT23-5 package.

Feature Summary

• Utilizes auto-zero techniques to achieve near-zero drift over time and temperature variations.
• Provides rail-to-rail input and output swing for maximum dynamic range.
• Delivers high precision with ultralow offset voltage and noise characteristics.

Applications

• Precision sensor signal conditioning
• Medical instrumentation
• High-resolution data acquisition systems

Procurement Notes

Verify the specific suffix 'XF' against the manufacturer's official datasheet to confirm pinout and packaging details. Ensure compatibility with the required operating temperature range and supply voltage specifications. Confirm RoHS compliance status if required for your assembly process. Cross-reference the part number with the latest revision history to avoid obsolete variants.

Selection Notes

Select this component when ultra-low offset voltage and minimal drift are critical requirements. The CMOS architecture ensures low power consumption suitable for battery-operated devices. Consider the 350kHz bandwidth and 0.17V/μs slew rate for applications requiring moderate speed with high DC accuracy. The SOT23-5 package is ideal for space-constrained designs.

Part Context

The RS8521XF belongs to the RS852x series of zero-drift operational amplifiers from Runic Technology. This family includes dual and quad versions such as the RS8522 and RS8524. The series is designed for applications demanding high precision and stability without external calibration components. The technology leverages auto-zeroing to maintain performance across wide temperature ranges.

Replacement Considerations

Check for direct substitutes within the RS852x family, such as the RS8522XK for dual-channel needs. Verify pin compatibility and electrical parameter equivalence before substitution. Consult the manufacturer's cross-reference guide for approved alternatives.