MAX274BCNG

Overview

The MAX274BCNG is a monolithic, continuous-time active filter manufactured by Analog Devices Inc. under the Maxim Integrated brand. It integrates four second-order biquad sections on a single chip to implement fourth- or eighth-order bandpass and lowpass filter responses. The device operates from a single 5V supply with a cutoff frequency range up to 150 kHz. Key electrical parameters include a maximum power dissipation of 30 mW and an operating temperature range of 0°C to +70°C for the BCNG variant. It utilizes external capacitors to set the center frequency and features a clock input for tuning stability.

Feature Summary

• Integrates four biquad sections for flexible fourth- or eighth-order filter configurations
• Continuous-time architecture eliminates aliasing effects associated with switched-capacitor designs
• Single-supply operation simplifies power requirements for portable applications
• External capacitor tuning allows precise control over center frequency

Applications

• Multichannel telemetry systems requiring signal conditioning
• Voiceband filtering in communication equipment
• Instrumentation front-end signal processing
• General-purpose analog signal filtering

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific lot traceability upon order placement. Ensure storage conditions align with semiconductor handling standards to maintain device integrity prior to assembly.

Selection Notes

Select this component when designing continuous-time filters that require high linearity and freedom from switching noise. Compare against switched-capacitor alternatives if aliasing rejection is critical. Verify that the required filter order can be achieved using the available internal biquad sections without excessive external components.

Part Context

The MAX274 belongs to the MAX274/MAX275 family of active filters. The 'B' suffix indicates a specific performance grade, while 'CNG' denotes the PDIP-28 package and commercial temperature range. This part complements the MAX275, which offers similar functionality with different pinout or specification variations.

Replacement Considerations

Direct replacements within the same family include the MAX274BMYG (SOIC-28 package) or the MAX275 series variants. Verify pin compatibility and thermal characteristics when substituting packages. Cross-reference datasheets to ensure equivalent electrical performance and interface requirements.