XR18910IL

Sensor And Detector Interfaces Overview

The MaxLinear XR18910IL is an 8-channel sensor interface analog front end designed for bridge sensors. It integrates an 8:1 differential multiplexer, a programmable gain instrumentation amplifier (PGA), and a 10-bit offset correction DAC. The device operates on a 2.7V to 5.25V analog supply and a 1.7V to 5.25V digital supply, consuming up to 559μA. It features eight fixed voltage gains ranging from 2V/V to 760V/V with ±0.5% error. An integrated LDO provides selectable 3V or 2.65V output for sensor excitation. Control is managed via an I2C interface supporting standard and fast modes.

Sensor And Detector Interfaces Feature Summary

• Integrates an 8:1 differential multiplexer for connecting multiple bridge sensors to a single signal path.
• Includes a 10-bit offset correction DAC providing independent calibration for each of the eight channels.
• Features a programmable gain instrumentation amplifier with selectable gains from 2V/V to 760V/V.
• Contains an onboard low-dropout regulator (LDO) offering selectable 3V or 2.65V outputs for external sensor power.

Sensor And Detector Interfaces Applications

• Bridge sensor interfaces
• Pressure and temperature sensing systems
• Strain gauge amplification
• Industrial process control instrumentation
• Precision weigh scales

Sensor And Detector Interfaces Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific I2C slave address suffix matches system requirements, as variants exist for addresses 0x64 through 0x67. Check RoHS compliance documentation for environmental standards. Ensure ESD handling protocols are followed during assembly due to the sensitivity of the CMOS input structure.

Sensor And Detector Interfaces Selection Notes

Select this component when interfacing multiple low-level differential bridge sensors requiring high precision. The wide gain range accommodates various sensor sensitivities without external amplifiers. Verify that the required I2C bus speed does not exceed 400 kHz. Ensure the application temperature falls within the -40°C to +85°C industrial range. Consider the QFN-24 package size constraints for PCB layout.

Sensor And Detector Interfaces Part Context

The XR18910 belongs to MaxLinear's sensor interface family, specifically targeting applications requiring multi-channel signal conditioning. It replaces discrete solutions involving separate MUXes, amplifiers, and DACs. The device simplifies design by consolidating these functions into a single QFN-24 package, reducing board space and component count for industrial and consumer sensing applications.

Sensor And Detector Interfaces Replacement Considerations

Substitutes include other MaxLinear sensor interfaces such as the XR18910IL-66 or XR18910IL-65, which share identical functionality but differ in their default I2C slave addresses. No cross-manufacturer replacements are confirmed in public datasheets.