The HFA3763 is a highly integrated baseband converter for quadrature modulation applications. The HFA3763 400MHz quadrature modulator and AGC is one of the seven chips in the PRISM? full duplex chip set (see Typical Application Diagram). It features all the necessary blocks for baseband modulation of I and Q signals. An output AGC and Baseband shaping filters are integrated in the design. Four filter bandwidths are programmable via a two bit digital control interface.

特性 Features

? Integrates all IF Transmit Functions

? Broad Frequency Range . . . . . . . . . . . 10MHz to 400MHz

? I/Q Amplitude and Phase Balance . . . . . . . . . . . 0.2dB, 2°

? 5th Order Programmable

??? Low Pass Filter. . . . . . . . . . . . . . . . . . .2.2MHz - 17.6MHz

? 400MHz Output AGC Amplifier/Attenuator . . . . . . . .45dB

? Selectable Digital or Analog TX Baseband Inputs

? Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . . -15dBm

? Fast Transmit-on Switching . . . . . . . . . . . . . . . . . . . . . 1μs

? Power Management/Standby Mode

? Single Supply 2.7V to 5.5V Operation

Applications

? Wireless Local Loop Systems

? Wireless Local Area Networks

? PCMCIA Wireless Duplex Transceivers

? ISM Systems

? TDMA Packet Protocol Radios

? PCS/Wireless PBX