General Description
The MAX4000/MAX4001/MAX4002 low-cost, low-power logarithmic amplifiers are designed to control RF power amplifiers (PA) operating in the 0.1GHz to 2.5GHz frequency range. A typical dynamic range of 45dB makes this family of log amps useful in a variety of wireless applications including cellular handset PA control, transmitter power measurement, and RSSI for terminal devices.

Features
♦ Complete RF-Detecting PA Controllers
♦ Variety of Input Ranges
   MAX4000: -58dBV to -13dBV
   (-45dBm to 0dBm in 50Ω)
   MAX4001: -48dBV to -3dBV
   (-35dBm to +10dBm in 50Ω)
   MAX4002: -43dBV to +2dBV
   (-30dBm to +15dBm in 50Ω)
♦ Frequency Range from 100MHz to 2.5GHz
♦ Temperature Stable Linear-in-dB Response
♦ Fast Response: 70ns 10dB Step
♦ 10mA Output Sourcing Capability
♦ Low Power: 17mW at 3V (typ)
♦ Shutdown Current 30µA (max)
♦ Available in an 8-Bump UCSP and a Small 8-Pin
   µMAX Package

Applications
   Transmitter Power Measurement and Control
   TSSI for Wireless Terminal Devices
   Cellular Handsets (TDMA, CDMA, GPRS, GSM)
   RSSI for Fiber Modules