MAX275BCWP

Overview

The MAX275BCWP is a low-power, monolithic, quadrature demodulator designed for direct-conversion receivers. It integrates a quadrature modulator/demodulator, baseband filters, and an oscillator on a single chip. The device operates with a supply voltage range of 2.7V to 3.6V and consumes typical current of 10mA at 3V. It features programmable baseband filter cutoff frequencies ranging from 100kHz to 4MHz via external resistors. The BCWP suffix indicates a commercial temperature range of 0°C to +70°C and a 28-pin plastic DIP package.

Feature Summary

• Integrates quadrature modulation and demodulation functions with baseband filtering
• Features programmable baseband filter bandwidths controlled by external resistors
• Includes an integrated LC-tank oscillator for local signal generation
• Designed for low-voltage operation suitable for portable applications

Applications

• Direct-conversion receiver architectures in wireless communication systems
• Low-IF receiver front-ends requiring integrated quadrature processing
• Portable radio equipment utilizing low-voltage power supplies

Procurement Notes

Verify the specific suffix 'BCWP' to confirm the 28-pin DIP package and commercial temperature rating. Ensure compatibility with existing board layouts for through-hole mounting. Confirm that the required baseband filter bandwidth can be achieved with available external resistor values within the design constraints.

Selection Notes

Select this component when a fully integrated quadrature demodulator with built-in baseband filtering is required. Compare against the MAX274 if modulation capabilities are not needed. Verify that the 28-pin DIP package fits the mechanical constraints and that the 0°C to +70°C operating range meets the environmental requirements of the target application.

Part Context

The MAX275 belongs to the MAX274/MAX275 family of direct-conversion transceivers. It serves as the demodulation counterpart to the MAX274 transmitter. This series addresses the need for simplified RF front-end designs by integrating complex analog functions into a single monolithic IC, reducing component count and board space.

Replacement Considerations

The MAX274BCWP is functionally related but lacks demodulation features. No direct pin-compatible replacements are confirmed in public documentation. Evaluate alternative direct-conversion receivers from Analog Devices or Maxim Integrated for modern equivalents.