TL2218-285PW

Overview

The TL2218-285PW is a precision micropower voltage reference integrated circuit manufactured by Texas Instruments. It provides a stable output voltage of 2.85V with low temperature drift, making it suitable for applications requiring high accuracy and stability over varying thermal conditions. The device operates within a supply voltage range of 2.7V to 40V and draws minimal quiescent current, enhancing energy efficiency in battery-powered systems. Packaged in a standard 8-pin SOIC (PW) format, it integrates a bandgap reference core with output buffering to drive loads up to 10mA while maintaining tight regulation. Its robust design ensures reliable performance across industrial temperature ranges, supporting diverse analog signal conditioning tasks.

Feature Summary

• Micropower operation with low quiescent current consumption for extended battery life
• Precision voltage reference with low initial accuracy and low temperature coefficient
• Integrated output buffer capable of sourcing and sinking load current
• Wide operating supply voltage range compatible with various system architectures

Applications

• Analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Portable instrumentation and measurement devices
• Battery-operated systems requiring stable reference voltages

Procurement Notes

Verify the exact part number suffix against official Texas Instruments documentation to confirm package type and temperature grade. Ensure compatibility with your PCB footprint and thermal requirements. Cross-reference with authorized distributors to confirm availability and authenticity. Check for any recent product change notifications that may affect specifications or packaging.

Selection Notes

Select this component when a stable 2.85V reference is needed with low power consumption. Consider the SOIC package size for space-constrained designs. Evaluate the temperature coefficient if operating in extreme environments. Compare with other TI voltage references like the TL431 or LM4040 series for specific accuracy or current requirements.

Part Context

The TL2218 series belongs to Texas Instruments' family of micropower voltage references. These devices are designed for applications where low power and high precision are critical. The TL2218-285PW specifically offers a fixed 2.85V output, distinguishing it from adjustable variants. It complements other TI analog components in data acquisition and sensor interface circuits.

Replacement Considerations

Direct replacements include other TL2218 variants with different output voltages or packages. For pin-compatible alternatives, consider the TL431 family or LM4040 series, ensuring voltage and current specifications match. Verify thermal performance and package dimensions before substitution.