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X9470 Datasheet Rf Power Amplifier Bias Controller

Manufacturer: Renesas

Overview: X9470 NOT RECOMMENDED FOR NEW DESIGNS NO RECOMMENDED REPLACEMENT contact our Technical Support Center at 1-888-INTERSIL or www.intersil.com/tsc RF Power Amplifier (PA) Bias Controller DATASHEET FN8204 Rev 0.

Datasheet Details

Part number X9470
Manufacturer Renesas
File Size 935.05 KB
Description RF Power Amplifier Bias Controller
Datasheet X9470-Renesas.pdf

General Description

The Intersil X9470 RF PA Bias Controller contains all of the necessary analog components to sense the PA drain current through an external sense resistor and automatically control the gate bias voltage of an LDMOS PA.

The external sense resistor voltage is amplified by an instrumentation amplifier and the output of the amplifier along with an external reference voltage is fed to the inputs of a comparator.

The comparator output indicates which direction the LDMOS gate bias voltage will move in the next calibration cycle.

Key Features

  • Programmable Bias Controller IC for Class A and AB LDMOS Power Amplifiers.
  • Adaptive System on Chip Solution.
  • Bias Current Calibration to better than ±4% using Reference Trim DCP.
  • Automatic Bias Point Tracking and Calibration.
  • IDQ Sensing and Tracking.
  • Programmable Instrumentation Amplifier to Scale Wide Range of IDQ.
  • Programmable Gate Bias Driver.
  • All Programmable settings are Nonvolatile.
  • All Settings Recalled at Powe.

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X9470 Distributor