STW81103ATR

Overview

The STW81103ATR is a general-purpose RF frequency synthesizer manufactured by STMicroelectronics. It operates within a frequency range of 2.5GHz to 5GHz and features an integrated Voltage Controlled Oscillator (VCO). The device supports both Fractional-N and Integer-N synthesis architectures, offering flexibility for multi-band applications. It is housed in a compact 28-pin VFQFPN package with an exposed pad, measuring 5x5 mm, designed for surface-mount assembly. The component accepts clock inputs ranging from 10MHz to 200MHz and can generate outputs up to 5000MHz.

Feature Summary

• Integrates Voltage Controlled Oscillator (VCO) for compact design
• Supports Fractional-N and Integer-N synthesis modes
• Multi-band capability covering 2.5GHz to 5GHz output range

Applications

• General purpose RF systems
• Wireless communication infrastructure
• Test and measurement equipment

Procurement Notes

Verify the specific datasheet revision and RoHS compliance status (RoHS3 Compliant) prior to procurement. Confirm that the 28-VFQFPN (5x5) package dimensions align with your PCB footprint requirements. Ensure the input clock specifications (10MHz-200MHz) match your system's reference clock source capabilities.

Selection Notes

Select this component when a high-integration solution combining a VCO and synthesizer is required for the 2.5GHz to 5GHz band. Consider the 28-pin VFQFPN package for space-constrained designs. Verify compatibility with both Fractional-N and Integer-N loop filter configurations based on phase noise and spurious performance requirements.

Part Context

This part belongs to STMicroelectronics' RF IC portfolio, specifically categorized under RF Misc ICs and Modules. It serves as a key building block for generating stable local oscillator signals in wireless transceivers and receivers. The active product status indicates ongoing manufacturing support.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official STMicroelectronics resources or authorized distributors for qualified alternatives if this specific package or pinout is unavailable.