X9470 Datasheet (Renesas) - RF Power Amplifier Bias Controller

X9470, RF Power Amplifier Bias Controller

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 a

X9470 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