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HFA3767 - 130MHz CDMA/AMPS Quadrature Modulator and AGC

Description

PIN NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 NAME TX_PE GND TXI+ TXINC TXQTXQ+ MIX_GND DPS_GND DPS_VCC LO_GND LO_IN CAP AGC_GND TX_IF+ TX_IFAGC_V CC GCT AGC_CTRL VCC DESCRIPTION Power enable control input.

HIGH for normal operation.

LOW for power down.

Features

  • I/Q Amplitude and Phase Balance.
  • . 0.5dB, 2o.
  • 130MHz AGC Amplifier/Attenuator range.
  • . . . >70dB.
  • Low LO Drive Level.
  • . . . . -10dBm.
  • Power Enable/Disable Control.
  • Single Supply Battery Operation.
  • . 2.7 to 3.3V.

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Full PDF Text Transcription

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® HFA3767 www.DataSheet4U.com P RE L I M I N A RY Data Sheet February 1998 FN4298.3 130MHz CDMA/AMPS Quadrature Modulator and AGC The HFA3767 is a monolithic bipolar quadrature modulator with gain control for CDMA/AMPS cellular applications. An upconverter quadrature mixer and an output gain control stage with better than 70dB of dynamic range are integrated in the design. A local oscillator input requires low drive levels and a divide by two phase shifter with duty cycle compensation achieves excellent phase and amplitude balance properties. The HFA3767 is one of the four chips in the PRISM™ chip set and is housed in a 20 lead SSOP package ideally suited to cellular handset applications. Features • I/Q Amplitude and Phase Balance . . . . . . . . . . . 0.
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