Description

The CXM300GA-T4 is an electronic component, specifically a module for the RF section of GSM/GPRS handsets. It contains a fast-lock synthesizer and RF transceiver.

Specifications and features

The CXM300GA-T4 features:

• Receiver, transmitter, dual PLL, RF + IF VCOs
• Dual fast lock PLL (< 140 µs)
• No external RF or IF LO required
• Extremely small size: 8.0 × 8.0 × 1.3 mm
• Programmable baseband interface
• Tx sum-loop modulator
• Power save control on all functions
• Rx current 55 mA 3.0 V
• Tx current 75 mA 3.0 V
• On-chip LNA bias control
• On-chip transmit IF filtering
• 3-wire serial bus control
• 60-pin LFLGA module package

Application Scenarios

The CXM300GA-T4 can be used in the following scenarios:

• GPRS class 12
• GSM900/1800/1900 triple band
• GSM900/1800 dual band
• GSM900/1900 dual band
• GSM900 single band
• GSM1800 single band
• GSM1900 single band

Comparison

• Contains a fast-lock synthesizer and RF transceiver for high-quality performance
• Small size allows for easy incorporation into designs
• Programmable baseband interface for customization
• Tx sum-loop modulator improves efficiency and reduces power consumption

• May not be compatible with all GSM and GPRS handsets
• While small, still may not fit into certain designs
• Requires 3-wire serial bus control for operation