CLC401AJ

Overview

The CLC401AJ is a single low-power, low-cost, rail-to-rail I/O operational amplifier manufactured by National Semiconductor. It belongs to the CLCx011 family of ultra-low cost voltage feedback amplifiers designed for battery-powered applications. The device operates from a supply range of 2.5V to 5.5V and features an input voltage range that exceeds both the negative and positive rails. Key electrical characteristics include a small signal bandwidth of 4.9MHz, a slew rate of 5.3V/µs, and a typical supply current of 136µA per amplifier at 5V.

Feature Summary

• Rail-to-rail input and output capability with input voltage range exceeding supply rails
• Ultra-low power consumption suitable for battery-operated systems
• High-speed performance with 4.9MHz bandwidth and 5.3V/µs slew rate

Applications

• Portable and battery-powered communication/computing systems
• ADC buffering in data acquisition circuits
• Active filtering and signal conditioning
• Portable test instruments and medical equipment

Procurement Notes

Verify the specific manufacturer source, as CLC parts are often distributed by third-party semiconductor brokers like Cadeka Microcircuits or Rochester Electronics rather than directly by National Semiconductor. Confirm the package type matches the required footprint, as the CLC4011 family includes single, dual, and quad variants with different pin counts. Ensure the 'AJ' suffix corresponds to the correct temperature grade and packaging configuration for your design requirements.

Selection Notes

Select this component when designing for space-constrained, battery-powered devices requiring high bandwidth without excessive power drain. The rail-to-rail I/O feature simplifies interface design with modern low-voltage logic and ADCs. Compare against other members of the CLCx011 family (CLC1011, CLC2011) to determine if single, dual, or quad configurations better suit the board layout and channel count needs.

Part Context

The CLC401AJ is part of the COMLINEAR CLCx011 series, which bridges the gap between high-performance bipolar op-amps and low-cost CMOS devices. This family is engineered to provide superior dynamic performance while maintaining the low power and cost advantages of CMOS technology. The single-channel CLC401 variant is specifically packaged for compact surface-mount applications.

Replacement Considerations

Direct substitutes within the same family include the CLC1011 (single) and CLC2011 (dual), provided the pinout and package dimensions are compatible. Verify that any replacement maintains the 4.9MHz bandwidth and 136µA supply current specifications to ensure circuit performance parity.