CLC021AVGZ-3.3

Overview

The CLC021AVGZ-3.3 is a precision voltage reference integrated circuit manufactured by National Semiconductor, now part of Texas Instruments. It provides a fixed output voltage of 3.3V with high accuracy and low temperature drift. The device utilizes a bandgap reference architecture to ensure stable performance across varying environmental conditions. Designed for applications requiring precise voltage regulation, it offers low noise characteristics and high line and load regulation. The component is housed in an 8-pin VSSOP package, suitable for space-constrained designs.

Feature Summary

• Fixed 3.3V output voltage
• Low temperature coefficient
• High precision accuracy
• Low noise operation

Applications

• Data acquisition systems
• Portable instrumentation
• Battery-powered devices
• Precision analog circuits

Procurement Notes

Verify the manufacturer designation as National Semiconductor or Texas Instruments when sourcing. Confirm the specific suffix '3.3' indicates the fixed 3.3V output variant. Ensure the package type matches the required 8-pin VSSOP footprint for PCB layout compatibility. Check for hermetic sealing requirements if operating in harsh environments.

Selection Notes

Select this component when a stable, low-drift voltage reference is needed for precision analog signal processing. Consider the low noise specification for sensitive measurement applications. Evaluate the power supply rejection ratio (PSRR) against system noise requirements. Compare thermal stability specifications with alternative references to ensure compliance with operational temperature ranges.

Part Context

This part belongs to the CLC021 series of voltage references from National Semiconductor. The series includes various output voltage options and package types. The CLC021AVGZ-3.3 specifically denotes the 3.3V fixed output version in a VSSOP package. It is designed to complement other precision analog components in data conversion and sensor interface circuits.

Replacement Considerations

Potential substitutes include other 3.3V precision voltage references from manufacturers like Analog Devices or Maxim Integrated. Verify pinout compatibility and electrical specifications such as initial accuracy and temperature drift before substitution. Ensure the replacement device meets the same package and thermal requirements.