CLC420AJFQML

Overview

The CLC420AJFQML is a high-speed, monolithic operational amplifier manufactured by National Semiconductor. It features a JFET input stage and an internal compensation network designed for stability in unity-gain configurations. The device operates within a wide supply voltage range and supports a broad common-mode input voltage range that includes ground. Its architecture provides high slew rate and large signal bandwidth, making it suitable for demanding analog signal processing applications requiring precision and speed.

Feature Summary

• JFET input stage providing low bias current
• Internal frequency compensation for unity-gain stability
• Wide common-mode input voltage range including ground
• High slew rate and large signal bandwidth

Applications

• Precision sample-and-hold circuits
• High-speed video buffering
• Active filtering in communication systems
• Instrumentation amplifiers

Procurement Notes

Verify the manufacturer origin as National Semiconductor, now part of Texas Instruments, to ensure authenticity. Confirm the suffix 'MJ' or 'QML' indicates military or qualified reliability standards if required for your specific application. Check for RoHS compliance status depending on the production batch date. Ensure the package type matches the footprint requirements of your design.

Selection Notes

Select this component when a high-speed op-amp with JFET inputs is required. Consider the trade-off between the higher input impedance of JFETs and the potentially higher noise compared to bipolar devices. Evaluate the power supply requirements against the system's available rails. Ensure the thermal dissipation capabilities of the package are sufficient for the operating conditions.

Part Context

The CLC420 series belongs to a family of high-speed operational amplifiers known for their performance in video and data acquisition applications. The 'A' grade typically denotes tighter electrical specifications compared to standard grades. The 'JFQML' suffix indicates a specific package and qualification level, often associated with ruggedized or space-grade variants.

Replacement Considerations

Check for direct pin-compatible replacements from Texas Instruments or other manufacturers offering similar high-speed JFET op-amps. Verify that any substitute meets the same electrical specifications for slew rate, bandwidth, and input offset voltage. Ensure the replacement package is compatible with the existing PCB layout.