详细描述
The RF7171 is a quad-band (GSM850/EGSM900/DCS1800/PCS1900) GSM/GPRS, Class 12 compliant transmit module with two interchangeable receive ports. 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 handset and eliminates the need for a PA-to-antenna switch module matching network. The device provides 50 ohm matched input and output ports requiring no external matching components.
The RF7171 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 RF7171 also integrates an ESD filter to provide excellent ESD protection at the antenna port. The RF7171 is designed to provide maximum efficiency at rated POUT.
特点
Enhanced Performance Transmit Module
No External Routing
High Efficiency at Rated POUTVBATT = 3.5 VGSM850 = 40%EGSM900 = 41%DCS1800 = 37.5%PCS1900 = 37.5%
Low RX Insertion Loss
Two Symmetrical RX Ports
0 dBm to 6 dBm Drive Level, >50 dB of Dynamic Range
Integrated Power Flattening Circuit
VBATT Tracking Circuit