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 ¡À1 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: ¨C58 to ¨C13 dBV (MAX9930/MAX9933), ¨C48 to ¨C3 dBV (MAX9931), and ¨C43 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.