ICL8069ACSQ

Overview

The ICL8069ACSQ is a low-voltage shunt voltage reference integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 1.23V with an initial accuracy tolerance of ±1.626%. The device features a temperature coefficient of 50ppm/°C and operates within a junction current range up to 5mA. It supports a supply voltage range from 1.25V to 40V and functions reliably across an operating temperature range of -40°C to +85°C. The component is housed in an 8-SOIC surface-mount package.

Feature Summary

• Provides a stable, fixed 1.23V reference output suitable for precision applications
• Features low temperature drift characteristics for consistent performance across varying thermal conditions
• Operates over a wide input voltage range allowing flexibility in power supply design

Applications

• Portable instrumentation systems requiring precise voltage references
• Battery-powered equipment utilizing low-voltage operation
• Data acquisition systems needing accurate analog-to-digital conversion references

Procurement Notes

Verify the specific suffix ACSQ against official Analog Devices documentation to confirm the exact grade and packaging configuration. Ensure compatibility with existing PCB footprints for the 8-SOIC package. Confirm that the required operating temperature range aligns with the -40°C to +85°C specification. Check for any end-of-life notices or obsolescence warnings directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when a fixed 1.23V reference is required in space-constrained designs using surface-mount technology. Consider the ±1.626% initial accuracy and 50ppm/°C temperature coefficient for precision requirements. Evaluate the 5mA maximum cathode current capability against load demands. Compare against other series members if different accuracy grades or package types are needed for the specific application constraints.

Part Context

The ICL8069ACSQ belongs to the ICL8069 family of low-voltage shunt references. This series is designed to replace older bandgap references while offering improved performance in terms of size and stability. The part integrates the reference element and control circuitry into a compact SOIC package, facilitating easier integration into modern electronic designs compared to through-hole alternatives.

Replacement Considerations

Direct substitutes include other variants within the ICL8069 family such as ICL8069CCSA or ICL8069DCZQ, depending on the required accuracy grade and package type. Verify pinout compatibility and electrical specifications before substitution.