PE45140A-X

Overview

The PE45140A-X is an UltraCMOS RF power limiter designed for signal conditioning applications. It operates within a frequency range of 20MHz to 2GHz and supports up to 50W of input power. The device utilizes a low impedance to ground architecture to reflect incident power back to the source, ensuring protection against high-power signals. Control state changes are achieved by toggling the V_CTRL pin from -2.5V to +2.5V. This component is housed in a compact 12-lead 3x3 QFN package with a bare pad for thermal management.

Feature Summary

• UltraCMOS technology integration for robust RF signal limiting
• Low impedance to ground design reflecting incident power
• Voltage-controlled state switching via V_CTRL toggle

Applications

• Wireless communication systems requiring RF protection
• Signal conditioning circuits in general RF IC designs
• High-power receiver front-end protection

Procurement Notes

This component is officially obsolete and no longer manufactured by pSemi. Distributors may list remaining stock or recommend alternatives. Verify availability status directly with suppliers before procurement planning. Do not assume continuous production support. Check for manufacturer recommended substitutes if current inventory is unavailable.

Selection Notes

Select this part only if the specific 20MHz to 2GHz frequency range and 50W power handling meet system requirements. Note that the device is discontinued; alternative components must be evaluated for compatibility. Ensure control voltage levels align with the -2.5V to +2.5V toggle specification. Consider the 12-QFN package dimensions for PCB layout constraints.

Part Context

The PE45140A-X belongs to the UltraCMOS series of RF signal conditioning devices produced by pSemi. It is categorized under RF power limiters and filters. The product line focuses on protecting sensitive RF components from high-power incidents in wireless infrastructure and communication equipment.

Replacement Considerations

The manufacturer recommends the PE45450A-X as a direct substitute. Verify electrical parameter compatibility and pinout alignment before replacing the obsolete PE45140A-X with this recommended alternative.