4270-52

Overview

The pSemi 4270-52 is an UltraCMOS SPST RF switch IC designed for CATV applications. It operates from 1 MHz to 3 GHz with a 75 Ohm impedance. Key electrical parameters include a typical insertion loss of 0.7 dB and high off-isolation of 63 dB. The device utilizes Si technology and functions within a temperature range of -40°C to +85°C. It is housed in a 6-DFN (3x3) package with an exposed pad, suitable for SMD/SMT installation.

Feature Summary

• Absorptive RF switch architecture providing high isolation performance
• Optimized for CATV signal distribution networks
• UltraCMOS technology integration for efficient operation

Applications

• CATV signal routing
• RF switching in cable television infrastructure
• Broadband signal distribution systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct impedance and package configuration. Confirm RoHS compliance status through current datasheets. Check factory pack quantities and reel specifications prior to order placement. Ensure compatibility with existing PCB footprint requirements for the 6-DFN package.

Selection Notes

Select this component for applications requiring 75 Ohm impedance matching in CATV environments. Consider the 63 dB isolation rating for signal integrity needs. Evaluate the 0.7 dB insertion loss against system budget constraints. Verify thermal management capabilities within the specified operating temperature range.

Part Context

This part belongs to the UltraCMOS series of RF switches from pSemi. It is categorized under Wireless & RF Integrated Circuits. The 4270-52 specifically targets the CATV market segment, distinguishing it from general-purpose RF switches by its optimized impedance and absorption characteristics.

Replacement Considerations

Cross-reference with other pSemi UltraCMOS SPST variants for potential pin-compatible alternatives. Verify functional equivalence regarding impedance and frequency range before substitution.