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7.4 I/O connector circuit(PIN)
Charging input
Data download
7.5 System Overview
The RF7176 simplifies the phone design by eliminating the need for the complicated control
loop, harmonic filters, and TX/RX switch along with their associated matching components. The
power control loop can be driven directly from the DAC output in the baseband circuit. The
module has two RX ports for GSM850/EGSM900 and DCS1800/PCS1900. To control the mode of
operation, there are three logic control signals. TX Enable, Gpctrl1. The RF7176 offers high
efficiency at the rated pout as backed-off efficiency is improved in this TXM.
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