General Description

The MAX9930–MAX9933 low-cost, low-power logarithmic amplifiers are designed to control RF power amplifiers (PA) and transimpedance amplifiers (TIA), and to detect RF power levels. These devices are designed to operate in the 2MHz to 1.6GHz frequency range.

Features

♦Complete RF-Detecting PA Controllers(MAX9930/MAX9931/MAX9932)

♦Complete RF Detector (MAX9933)

♦Variety of Input Ranges

  MAX9930/MAX9933: -58dBV to -13dBV(-45dBm to 0dBm for 50ΩTermination)

  MAX9931: -48dBV to -3dBV (-35dBm to +10dBm for 50ΩTermination)

  MAX9932: -43dBV to +2dBV (-30dBm to +15dBm for 50ΩTermination)

♦2MHz to 1.6GHz Frequency Range

♦Temperature Stable Linear-in-dB Response

♦Fast Response: 70ns 10dB Step

♦10mA Output Sourcing Capability

♦Low Power: 17mW at 3V (typ)

♦13µA (typ) Shutdown Current

♦Available in a Small 8-Pin µMAX Package

Applications

RSSI for Fiber Modules, GPON-CATV Triplexors

Low-Frequency RF OOK and ASK Applications

Transmitter Power Measurement and Control

TSI for Wireless Terminal Devices

Cellular Handsets (TDMA, CDMA, GPRS, GSM)