详细描述
The RF7173 is a dual band (GSM850/PCS1900 or EGSM900/DCS1800) GSM/GPRS Class 12
compliant transmit module with two symmetrical receive ports that has been specifically tuned for better efficiency. 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/PCS1900 or EGSM900/DCS1800 handset and eliminates the need for a PA-to-antenna switch module matching network.
The RF7173 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 RF7173 also integrates an ESD filter to provide excellent ESD protection at the antenna port. The RF7173 is designed to provide maximum efficiency at rated POUT.
特点
Enhanced Performance Transmit Module
No External Routing
Enhanced Efficiency at Rated POUT , VBATT = 3.6V, GSM850/EGSM900 42%, DCS1800/PCS1900 36%
Low Rx Insertion Loss
Symmetrical Rx Ports
0dBm to 6dBm Drive Level, > 50dB of Dynamic Range
Excellent ESD Protection at Antenna Port: 8kV
Integrated Power Flattening Circuit
VBATT Tracking Circuit