MAX7042ATJ+T

RF Receivers Overview

The MAX7042ATJ+T is a fully integrated, low-power CMOS superheterodyne RF receiver designed for frequency-shift-keyed (FSK) applications. It operates at frequencies of 308MHz, 315MHz, 418MHz, and 433.92MHz with a sensitivity of -110dBm. The device supports a maximum data rate of 66kbps and draws 7.2mA during reception. It accepts supply voltages of 2.4V to 3.6V or 4.5V to 5.5V. Packaged in a 32-pin TQFN-EP surface mount format, it integrates the complete receiver chain for efficient PCB implementation.

RF Receivers Feature Summary

• Fully integrated CMOS superheterodyne architecture
• Low-power operation suitable for battery applications
• Supports FSK modulation protocols
• High sensitivity for reliable signal detection

RF Receivers Applications

• Home automation systems
• Wireless sensor networks
• Remote control interfaces
• Security alarm systems

RF Receivers Procurement Notes

Verify the specific suffix variant against the target frequency band, as the MAX7042 family includes options for 308MHz, 315MHz, 418MHz, and 433.92MHz. Confirm that the +T designation matches the required tape-and-reel packaging configuration. Ensure the voltage range aligns with the system's power supply design, noting the dual-range capability. Cross-reference the manufacturer part number to avoid confusion with similar model numbers in the same product line.

RF Receivers Selection Notes

Select this component when a compact, low-power solution for FSK signals is required. The integrated superheterodyne design reduces external component count compared to direct-conversion alternatives. Consider the 32-pin TQFN package for space-constrained designs. Evaluate the 66kbps data rate limit against application throughput needs. Verify thermal performance requirements given the small form factor.

RF Receivers Part Context

This part belongs to the Maxim Integrated MAX704x series of low-power RF receivers. It shares architectural similarities with other devices in the family but is distinguished by its specific frequency coverage and pinout. The series targets cost-sensitive wireless applications requiring robust performance in noisy environments. The ATJ+T variant specifically denotes the automotive-grade temperature range and tape-and-reel packaging.

RF Receivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult Analog Devices official resources for current obsolescence notices or recommended upgrades.