MAX9931EUA+

MAXIM INTEGRATED PRODUCTS  MAX9931EUA+  芯片, 射频探测器

The is a 2MHz to 1.6GHz 45dB RF-detecting power amplifier PA controller in 8 pin µMAX package. This low cost, low power logarithmic amplifier designed to control RF power amplifier PA, transimpedance amplifier TIA and to detect RF power levels. A typical dynamic range of 45dB makes the logarithmic amplifier useful in a variety of wireless & GPON fibre video applications such as transmitter power measurement and RSSI for terminal devices. Logarithmic amplifier provides much wider measurement range and superior accuracy to controllers based on diode detectors. The choice of three different input voltage ranges eliminates the need for external attenuators, thus simplifying PA control-loop design. The logarithmic amplifier is a voltage measuring device with a typical signal range of -48dBV to -3dBV. It is used in RSSI for fibre modules, low frequency RF OOK and ASK applications, transmitter power measurement and control, TSI for wireless terminal devices.

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Supply voltage range is 2.7V to 5.25V

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Operating temperature range from -40°C to 85°C

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Maximum supply current is 12mA, shutdown supply current of 13µA

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Small-signal bandwidth is 20MHz

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Slew rate is 8V/µs at VOUT = 0.2V to 2.6V from CLPF

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Temperature stable linear in dB response

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Fast response of 70ns 10dB step, frequency range from 2MHz to 1.6GHz

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Output sourcing capability of 10mA

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Low power of 17mW at 3V typ

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Input power range from -48dBV to -3dBV & equivalent power range -35dBm to 10dBm 50 ohm termination