AF151-1CJ

Overview

The AF151-1CJ is a dual universal active filter manufactured by National Semiconductor. It features a second-order Butterworth low-pass response and operates within a power supply range of ±5V to ±18V. The component is housed in a 24-pin CDIP package with a 0.600-inch width. Designed for continuous-time signal processing, it supports a cutoff frequency of 10kHz. This integrated circuit provides two independent filter sections in a single package, suitable for precision analog applications requiring stable filtering characteristics.

Feature Summary

• Dual operational amplifier architecture enabling two independent filter channels
• Butterworth low-pass frequency response characteristic
• Universal configuration capability for various analog signal processing tasks
• Continuous-time operation for real-time signal filtering

Applications

• Precision analog signal conditioning circuits
• Audio frequency filtering and equalization
• Instrumentation front-end noise reduction
• Data acquisition system anti-aliasing filters

Procurement Notes

Verify the manufacturer marking matches National Semiconductor specifications. Confirm the package type is 24-CDIP. Check for physical damage to pins. Ensure the part number suffix matches exactly. Request original datasheets for electrical parameter validation before integration.

Selection Notes

Select this component when dual-channel second-order filtering is required. Consider the ±5V to ±18V supply range compatibility. Evaluate the 10kHz cutoff frequency against system requirements. Assess the 24-CDIP package constraints for PCB layout. Compare performance against single-channel alternatives if space is limited.

Part Context

This device belongs to the family of dual universal active filters from National Semiconductor. It integrates two operational amplifiers per package. The design supports flexible circuit configurations. It serves as a building block for complex analog systems. The component simplifies multi-stage filter implementation.

Replacement Considerations

Direct substitutes include other dual universal active filters from National Semiconductor or Texas Instruments. Verify pin compatibility and electrical parameters. Check package dimensions for mechanical fit. Ensure equivalent bandwidth and supply voltage ranges match the application requirements.