详细描述
The RF7170 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 RF7170 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 RF7170 also integrates an ESD filter to provide excellent ESD protectino at the antenna port. The RF7170 is designed to provide maximum efficiency at rated POUT.
特点
Enhanced Performance Transmit Module
No External Routing
High Efficiency at Rated POUT GSM850=40% EGSM900=41% DCS1800=37%PCS1900=37%
VBATT=3.5V
Low RX Insertion Loss
Two Symmetrical RX Ports
0dBm to 6dBm Drive Level, >50dB of Dynamic Range
Integrated Power-Flattening Circuit for Lower Power Variation under Mismatch Conditions
VBATT Tracking Circuit for Improved Switching Spectrum Performance under Low VBATT Conditions