描述 Description

The TRF370315 and TRF370333 are low-noise direct quadrature modulators, capable of converting complex modulated signals from baseband or IF directly up to RF. The TRF370315 and TRF370333 are ideal for high-performance direct RF modulation from 350 MHz up to 4 GHz. These modulators are implemented as a double-balanced mixer. The RF output block consists of a differential to single-ended converter and an RF amplifier capable of driving a single-ended 50-Ω load without any need of external components. The TRF370333 and TRF370315 devices have different common-mode voltage ratings at the I/Q baseband inputs. The TRF370315 requires a 1.5-V common-mode voltage, and the TRF370333 requires a 3.3-V common-mode voltage.

特性 Features

? 75-dBc Single-Carrier WCDMA ACPR at –11-dBm Channel Power
? Low Noise Floor: –163 dBm/Hz
? OIP3 of 23 dBm
? P1dB of 9 dBm
? Unadjusted Carrier Feedthrough of –40 dBm
? Unadjusted Side-Band Suppression of –40 dBc
? Single Supply: 4.5 V–5.5 V Operation
? Silicon Germanium Technology
? TRF370333 With 3.3-V CM at I, Q Baseband Inputs
? TRF370315 With 1.5-V CM at I, Q Baseband Inputs
? APPLICATIONS
? Cellular Base Transceiver Station Transmit Channel
? CDMA: IS95, UMTS, CDMA2000, TD-SCDMA
? TDMA: GSM, IS-136, EDGE/UWC-136
? Wireless Local Loop
? Wireless MAN Wideband Transceivers

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