AD8310ARMZ-REEL7 Datasheet

Linear - Amplifiers - Special Purpose


The AD8310( AD8310ARMZ-REEL7 ) is a complete, dc&minus;440 MHz demodulating logarithmic amplifier (log amp) with a very fast voltage mode output, capable of driving up to 25 mA into a grounded load in under 15 ns. It uses the progressive compression (successive detection) technique to provide a dynamic range of up to 95 dB to &plusmn;3 dB law conformance or 90 dB to a &plusmn;1 dB error bound up to 100 MHz. It is extremely stable and easy to use, requiring no significant external components. A single-supply voltage of 2.7 V to 5.5 V at 8 mA is needed, corresponding to a power consumption of only 24 mW at 3 V. A fast-acting CMOScompatible enable pin is provided. Each of the six cascaded amplifier/limiter cells has a smallsignal gain of 14.3 dB, with a &minus;3 dB bandwidth of 900 MHz. A total of nine detector cells are used to provide a dynamic range that extends from &minus;91 dBV (where 0 dBV is defined as the amplitude of a 1 V rms sine wave), an amplitude of about &plusmn;40 &mu;V, up to +4 dBV (or &plusmn;2.2 V). The demodulated output is accurately scaled, with a log slope of 24 mV/dB and an intercept of &minus;108 dBV. The scaling parameters are supply- and temperature-independent. AD8310ARMZ-REEL7 Features &bull; Multistage demodulating logarithmic amplifier &bull; Voltage output, rise time <15 ns &bull; High current capacity: 25 mA into grounded RL&bull; 95 dB dynamic range: &minus;91 dBV to +4 dBV &bull; Single supply of 2.7 V min at 8 mA typ &bull; DC&ndash;440 MHz operation, &plusmn;0.4 dB linearity &bull; Slope of +24 mV/dB, intercept of &minus;108 dBV &bull; Highly stable scaling over temperature &bull; Fully differential dc-coupled signal path &bull; 100 ns power-up time, 1 mA sleep current AD8310ARMZ-REEL7 Applications &bull; Conversion of signal level to decibel form &bull; Transmitter antenna power measurement &bull; Receiver signal strength indication (RSSI) &bull; Low cost radar and sonar signal processing &bull; Network and spectrum analyzers &bull; Signal-level determination down to 20 Hz &bull; True-decibel ac mode for multimeters


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Manufacturer information


Diodes Incorporated is a leading global manufacturer and supplier of high-quality, application-specific, standard products within the broad discrete, logic and analog semiconductor markets. Diodes Incorporated primarily serves the computing, consumer, communications, industrial and automotive segments. Diodes’ diverse product portfolio includes parts for LCD/LED TVs and displays, desktop, notebook and tablet computing, smartphones and hand-held devices, set-top boxes, power supplies and USB protection as well as many other application areas.

Diodes Incorporated offers a wide array of products including diodes, rectifiers, transistors, MOSFETs, gate drivers, protection devices, function-specific arrays, amplifiers and comparators, Hall-effect sensors and temperature sensors, power management devices including LED drivers, AC-DC converters and controllers, DC-DC switching regulators, linear voltage regulators, current monitors, and voltage reference and shunt regulators, along with special function devices including USB power switches, load switch devices, voltage supervisors and motor controllers.

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