详细描述
The RF3233 is a quad band (GSM850/EGSM900/DCS1800/PCS1900) GPRS/Linear EDGE Class 12 compliant transmit module with two symmetrical receive ports and two high linearity UMTS ports for single- and dual-band multi-mode applications. 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. RF3233 is designed to operate in either saturated mode for GMSK or linear mode for EDGE 8PSK signalling and also features EDGE low power mode. 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 RF3233 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 RF3233 also integrates an ESD filter to provide excellent ESD protection at the antenna port.
特点
High Efficiency at Rated POUT VBATT = 3.5VLow Band = 40%High Band = 35%
Integrated Power Flattening Circuit for Lower Power Variation under Mismatch Conditions
Integrated VBATT Tracking Circuit for Improved Switching Spectrum under Low VBATT Conditions
Dual Mode Operation
Digital Bias Control
EDGE Low Power Mode
8kV Robust ESD Protection at Antenna Port
Symmetrical Rx Ports
Two High Linearity Tx/Rx UMTS Ports
0dBm to 6dBm Drive Level, >50dB of Dynamic Range