RF3234

Product Summary

The RF3234 is a quad band (GSM850/EGSM900/DCS1800/PCS1900) GSM/GPRS Class 12 compliant transmit module with two symmetrical receive ports and one high linearity UMTS port. This transmit module builds upon RFMDs leading power amplifier with PowerStar integrated power control technology, pHEMT switch technology, and integrated transmit filtering for best-in-class harmonic performance. The results are high performance, reduced solution size, and ease of implementation. The device is designed for use as the final portion of the transmitter section in a GSM850/EGSM900/DCS1800/PCS1900 and UMTS handset and eliminates the need for a PA-to-antenna switch module matching network. The device provides 50Ω matched input and output ports requiring no external matching components. The RF3234 features RFMDs latest integrated power-flattening circuit, which significantly reduces current and power variation into load mismatch. Additionally, a VBATT tracking feature is incorporated to maintain switching performance as supply voltage decreases. The RF3234 also integrates an ESD filter to provide excellent ESD protection at the antenna port.

Parametrics

RF3234 absolute maximum ratings: (1)Supply Voltage: -0.3 to +6.0 V; (2)Power Control Voltage (VRAMP): -0.3 to +3.0 V; (3)Input RF Power: +10 dBm; (4)Max Duty Cycle: 50 %; (5)Output Load VSWR: 20:1; (6)Operating Temperature: -30 to +85 °C; (7)Storage Temperature: -55 to +150 °C.

Features

RF3234 features: (1)High Efficiency at Rated POUT VBATT=3.5V, Low Band = 40%, High Band = 35%; (2)Integrated Power Flattening Circuit for Lower Power Variation under Mismatch Conditions; (3)Integrated VBATT Tracking Circuit for Improved Switching Spectrum under Low VBATT Conditions; (4)Dual Mode Operation; (5)Digital Bias Control; (6)EDGE Low Power Mode; (7)8kV Robust ESD Protection at Antenna Port; (8)Symmetrical RX Ports; (9)Two High Linearity TX/RX UMTS Ports; (10)0dBm to 6dBm Drive Level, >50dB of Dynamic Range.

Diagrams