The TRF3701 is an ultralow-noise directquadrature modulator that is capable of converting complex input signals from baseband or IF directly up to RF. An internal analog combiner sums the real and imaginary components of the RF outputs. This combined output can feed the RF preamp directly at frequencies of up to 1.5 GHz. The modulator is implemented as a double-balanced mixer. An internal local oscillator (LO) phase splitter accommodates a single-ended LO input, eliminating the need for a costly external balun.

• P1dB of 7dBm
• -156 dBm/Hz Noise Floor
• -150 dBm/Hz Noise at POUT = 0 dBm
• Typical Unadjusted Carrier Suppression > 35 dBc at 1 GHz
• Typical Unadjusted Sideband Suppression > 40 dBc at 1 GHz
• Differential or Single-Ended I, Q Inputs
• Convenient Single-Ended LO Input
• Silicon Germanium Technology
• APPLICATIONS
  • Cellular Base Transceiver Station Transmit Channel
  • IF Sampling Applications
  • TDMA: GSM, IS-136, EDGE/UWC-136
  • CDMA: IS-95, UMTS, CDMA2000
  • Wireless Local Loop
  • Wireless LAN IEEE 802.11
  • LMDS, MMDS
  • Wideband Baseband Transceivers