SI4133T-BM

Clock Generators, PLLs, Frequency Synthesizers Overview

The Si4133T-BM is a dual RF synthesizer integrated circuit designed for the Aero transceiver chipset. It supports quad-band GSM/GPRS communications (GSM 850, E-GSM 900, DCS 1800, PCS 1900) and GPRS Class 12 compliance. The device features an integer-N PLL architecture with fully integrated RF and IF VCOs, loop filters, varactors, and resonators. Operating on a 2.7 V to 3.0 V supply, it consumes 16–19 mA in receive mode and 22–27 mA in transmit mode. The component utilizes a 5 x 5 mm QFN28 package.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual RF synthesizer with integrated RF and IF VCOs
• Integer-N PLL architecture for fast transient response
• Supports GSM 850, E-GSM 900, DCS 1800, and PCS 1900 bands
• 3-wire serial interface for control

Clock Generators, PLLs, Frequency Synthesizers Applications

• Multi-band GSM wireless handsets
• GPRS wireless data modems
• Aero transceiver chipset integration

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure compatibility with required packaging or environmental specifications. Confirm that the component meets all absolute maximum ratings during handling and assembly.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when designing multi-band GSM/GPRS terminals requiring a highly integrated frequency synthesizer. Ensure the design accommodates the 2.7 V to 3.0 V operating voltage range and provides adequate thermal management for the specified power consumption levels.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The Si4133T-BM functions as the frequency synthesizer within the Silicon Labs Aero transceiver family. It interfaces with the Si4200 GSM transceiver and the Si4201 universal baseband interface to form a complete RF front-end solution for cellular communications.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Public confirmed substitute part numbers are not available.