详细描述
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 RFMD’s 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 50? matched input and output ports requiring no external matching components.
The RF3234 features RFMD’s 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.
特点
High Efficiency at Rated POUTVBATT = 3.5VGSM850/EGSM900 = 41%DCS1800/PCS1900 = 33%
Integrated Power Flattening Circuit
Integrated VBATT Tracking Circuit
8kV Robust ESD Protection at Antenna Port
No External Routing
Low Rx Insertion Loss
One High Linearity Tx/Rx UMTS Port
0dBm to 6dBm Drive Level, >50dB of Dynamic Range
Scalability to DB UMTS and? EDGE+DB UMTS with pin compatible RF3232 and RF3233