AD8310ARMZ Description

The Analog Devices Inc. AD8310ARMZ  is a complete, dc to 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. 

AD8310ARMZ Features

• Slope of +24 mV/dB, intercept of ?108 dBV

• Highly stable scaling over temperature

• The fully differential dc-coupled signal path

• 100 ns power-up time, 1 mA sleep current

• Multistage demodulating logarithmic amplifier

• Voltage output, rise time <15 ns

• High current capacity: 25 mA into grounded RL

• 95 dB dynamic range: ?91 dBV to +4 dBV

• A single supply of 2.7 V min at 8 mA Typ

• DC to 440 MHz operations, ±0.4 dB linearity

AD8310ARMZ Applications

• Conversion of signal level to decibel form

• Transmitter antenna power measurement

• Receiver signal strength indication (RSSI)

• Low-cost radar and sonar signal processing

• Network and spectrum analyzers

• Signal-level determination down to 20 Hz

• True-decibel ac mode for multimeters