RF137 Datasheet (Conexant) - Transceiver For GSM Applications

RF137, Transceiver For GSM Applications

www.DataSheet4U.com RF137 Transceiver For GSM Applications The RF137 Transceiver is a highly integrated device optimized for use in singleband or multi-band Global System for Mobile Communications (GSM) applications.

In the receive path, the device consists of selectable gain Intermediate Frequency (IF) amplifiers and an image reject downconverter with differential IF outputs.

In the transmit path, the device consists of an In-Phase and Quadrature (I/Q) modulator and a frequency translational l

RF137 Features

* an on-chip, dual-loop UHF/VHF frequency synthesizer circuit. It includes two sets of reference dividers, phase/frequency detectors, charge pumps, prescalers, main dividers, and control circuits. The device package and pinout of the RF137 are shown in Figure 1. A block diagram is shown in Figure 2. T