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
