MAX293CSA+

Overview

The MAX293CSA+ is an active, eighth-order, low-pass switched-capacitor filter manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates within a supply voltage range of 4.75 V to 11 V and supports a cutoff frequency of 25 kHz. The device features a single channel and is housed in an SOIC-8 surface-mount package. It functions reliably across a temperature range from 0°C to +70°C. This component integrates filtering capabilities suitable for precision signal processing applications requiring high attenuation and stable performance.

Feature Summary

• Implements eighth-order low-pass filtering using switched-capacitor technology
• Provides precise cutoff frequency control via external clock input
• Operates on a single power supply within specified voltage limits

Applications

• Signal conditioning in data acquisition systems
• Anti-aliasing filters in analog-to-digital conversion stages
• Audio processing circuits requiring steep roll-off characteristics

Procurement Notes

Verify the specific suffix and tape-and-reel packaging details against the manufacturer's official datasheet before procurement. Confirm that the supplier provides genuine components with traceable origin. Ensure compatibility with the required operating temperature range and supply voltage specifications for the target application environment.

Selection Notes

Select this component when an eighth-order response is necessary without cascading multiple lower-order stages. Ensure the available clock frequency allows for the desired 25 kHz cutoff while maintaining adequate clock-to-cutoff ratio. Verify that the SOIC-8 footprint fits the PCB layout constraints and that the thermal dissipation meets the system requirements.

Part Context

This part belongs to the MAX291/MAX293 family of switched-capacitor filters. These devices are designed to replace traditional passive LC or RC networks, offering smaller size and easier tuning. The MAX293 variant specifically provides the eighth-order low-pass configuration, distinguishing it from other orders or filter types within the same product line.

Replacement Considerations

Check for direct pin-compatible alternatives within the MAX29x series if different order responses are needed. Verify that any substitute maintains the same SOIC-8 package and electrical characteristics. Consult the manufacturer's obsolescence notices to ensure long-term availability.