Designed to control RF power amplifiers and transimpedance amplifiers and to detect RF power levels, the MAX9930/MAX9931/MAX9932/MAX9933 logarithmic amplifiers operate in the 2-MHz to 1.6-GHz frequency range and have a typical dynamic range of 45 dB with an accuracy of ±1 dB, making them useful in a variety of wireless and GPON fiber video applications such as transmitter power measurement and RSSI for terminal devices. These devices provide a choice of three different input-voltage ranges, thus eliminating the need for external attenuators and therefore simplifying amplifier control-loop design.
Each of these amplifiers measure voltage in a distinct, typical signal range: –58 to –13 dBV (MAX9930/MAX9933), –48 to –3 dBV (MAX9931), and –43 to 2 dBV (MAX9932). Housed in 8-pin microMAX packages, all parts consume 5.9 mA with a 5-V supply, and the typical shutdown current is 13 µA. Furthermore, these devices feature a glitch-free output by asserting a power-on delay when coming out of shutdown. ($1.29 ea/1,000—available now.)
Maxim Integrated Products , Sunnyvale , CA
Customer Service 888-629-4642
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