HomedatasheetAD8314ARM

AD8314ARM Datasheet

Logarithmic Amplifiers
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Description

The AD8314ARM is a complete low cost subsystem for the measurement and control of RF signals in the frequency range of 100 MHz to 2.7 GHz, with a typical dynamic range of 45 dB, intended for use in a wide variety of cellular handsets and other wireless devices. It provides a wider dynamic range and better accuracy than possible using discrete diode detectors. In particular, its temperature stability is excellent over the full operating range of −40°C to +85°C. Its high sensitivity allows control at low power levels, thus reducing the amount of power that needs to be coupled to the detector. It is essentially a voltage-responding device, with a typical signal range of 1.25 mV to 224 mV rms or –58 dBV to −13 dBV. This is equivalent to −45 dBm to 0 dBm, re 50 Ω.For convenience, the signal is internally ac-coupled, using a 5 pF capacitor to a load of 3 kΩ in shunt with 2 pF. This highpass coupling, with a corner at approximately 16 MHz, determines the lowest operating frequency. Therefore, the source can be dc grounded. AD8314ARM Features • Complete RF detector/controller function • Typical range:−58 dBV to −13 dBV −45 dBm to 0 dBm, re 50 Ω • Frequency response from 100 MHz to 2.7 GHz • Temperature-stable linear-in-dB response Accurate to 2.7 GHz • Rapid response: 70 ns to a 10 dB step • Low power: 12 mW at 2.7 V • Power down to 20 μA AD8314ARM Application • Cellular handsets (TDMA, CDMA , GSM) • RSSI and TSSI for wireless terminal devices • Transmitter power measurement and control
Features

Parameters

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Manufacturer information

SILICON LABORATORIES
Warm Hint

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