MAX274ACNG

Overview

The MAX274ACNG+ is a fourth-order continuous-time active filter manufactured by Analog Devices Inc. (Maxim Integrated). It operates on a single 5V supply with a minimum voltage of 2.37V and a maximum of 5.5V. The device features a cutoff frequency of 150kHz and supports low-pass and band-pass filter configurations. It is housed in a 28-lead SO-Wide surface-mount package and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Continuous-time architecture for precise filtering without clock jitter
• Configurable as fourth-order low-pass or band-pass filters
• Single-supply operation compatible with standard logic levels

Applications

• Audio signal processing
• Instrumentation front ends
• Data acquisition systems

Procurement Notes

Verify the specific suffix 'ACNG+' against the official datasheet to confirm the exact temperature grade and lead-free status. Confirm availability through authorized distributors, as stock levels fluctuate. Ensure the ordering information matches the required package type and electrical specifications before finalizing procurement.

Selection Notes

Select this component when a fourth-order response is required without the complexity of switched-capacitor designs. Compare the 150kHz cutoff frequency against system requirements. Verify that the SO-Wide-28 package fits the PCB layout constraints. Consider the MAX275 if higher order filtering is needed.

Part Context

The MAX274 belongs to the MAX274/MAX275 family of continuous-time active filters. It is distinct from the MAX260/261/262 series, which are switched-capacitor devices. This family provides stable performance independent of clock noise, making it suitable for applications where timing precision is critical.

Replacement Considerations

The MAX275 is a related part offering eighth-order filtering capabilities. Direct pin-compatible replacements should be verified against the datasheet. No other direct substitutes are publicly confirmed.