MAX2235EUP+

RF Amplifiers Overview

The MAX2235EUP+ is a low-voltage silicon RF power amplifier designed for the 900 MHz ISM band, covering 800 MHz to 1 GHz. It operates from a single +2.7 V to +5.5 V supply and delivers 1 W of output power at +3.6 V. The device features an autoramping function that adjusts gain based on input drive level. It utilizes a thermally enhanced 20-pin TSSOP package with an exposed pad for efficient heat dissipation.

RF Amplifiers Feature Summary

• Integrates an autoramping mechanism to optimize linearity and efficiency across varying input drive levels.
• Designed for direct operation from single-cell lithium-ion or multi-cell nickel-cadmium battery sources.
• Utilizes a thermally enhanced surface-mount package to support high-power RF applications.

RF Amplifiers Applications

• 900 MHz ISM-Band Applications
• Two-Way Pagers
• Analog Mobile Radio Systems

RF Amplifiers Procurement Notes

Verify the suffix 'T' indicates reel packaging when ordering. Confirm the specific voltage rating matches the system requirement of 2.7 V to 5.5 V. Ensure the thermal management design accommodates the power dissipation characteristics of the 20-TSSOP-EP package. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm current production status.

RF Amplifiers Selection Notes

Select this component for designs requiring high output power in the 900 MHz range with simplified biasing requirements. The integrated autoramping feature reduces the need for complex external control circuitry. Consider the thermal performance of the PCB layout due to the exposed pad requirement. This device is suitable for portable applications where battery life and linear performance are critical constraints.

RF Amplifiers Part Context

The MAX2235 belongs to Maxim Integrated's portfolio of RF power amplifiers targeting ISM bands. It complements other devices like the MAX2233 by offering higher output power capabilities within the same frequency range. The series is characterized by its compatibility with standard low-voltage digital logic supplies, facilitating integration into consumer wireless devices.

RF Amplifiers Replacement Considerations

The MAX2233EEE+ is a documented alternative within the same family, though it offers lower output power (250 mW) compared to the MAX2235's 1 W capability. Verify pinout compatibility and thermal requirements before substitution.