AD8310ARMZ-REEL7 product image


Linear - Amplifiers - Special Purpose
Analog Devices
The AD8310(AD8310ARMZ-REEL7 ) is a complete, dc−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 ±3 dB law conformance or 90 dB to a ±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 −3 dB bandwidth of 900 MHz. A total of nine detector cells are used to provide a dynamic range that extends from −91 dBV (where 0 dBV is defined as the amplitude of a 1 V rms sine wave), an amplitude of about ±40 μV, up to +4 dBV (or ±2.2 V). The demodulated output is accurately scaled, with a log slope of 24 mV/dB and an intercept of −108 dBV. The scaling parameters are supply- and temperature-independent. 
AD8310ARMZ-REEL7 Features
• 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 
• Single supply of 2.7 V min at 8 mA typ 
• DC–440 MHz operation, ±0.4 dB linearity 
• Slope of +24 mV/dB, intercept of −108 dBV 
• Highly stable scaling over temperature 
• Fully differential dc-coupled signal path 
• 100 ns power-up time, 1 mA sleep current 
AD8310ARMZ-REEL7 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 


Mounting TypeSurface Mount
Package / Case8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package8-MSOP
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