AD8310ARMZ-REEL7

Product Summary

The AD8310ARMZ-REEL7 is a Logarithmic Amplifier. The AD8310ARMZ-REEL7 is a complete, 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 CMOS-compatible enable pin is provided. Each of the six cascaded amplifier/limiter cells has a small-signal 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. The applications of the AD8310ARMZ-REEL7 include 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 and True-decibel ac mode for multimeters.

Parametrics

AD8310ARMZ-REEL7 absolute maximum ratings: (1)Supply Voltage, VS: 7.5 V; (2)Input Power (re 50 Ω), Single-Ended: 18 dBm; (3)Differential Drive: 22 dBm; (4)Internal Power Dissipation: 200 mW; (5)θJA: 200℃/W; (6)Maximum Junction Temperature: 125℃; (7)Operating Temperature Range: -40℃ to +85℃; (8)Storage Temperature Range: -65℃ to +150℃; (9)Lead Temperature (Soldering 60 sec): 300℃.

Features

AD8310ARMZ-REEL7 features: (1)Multistage demodulating logarithmic amplifier; (2)Voltage output, rise time <15 ns; (3)High current capacity: 25 mA into grounded RL; (4)95 dB dynamic range: -91 dBV to +4 dBV; (5)Single supply of 2.7 V min at 8 mA typ; (6)DC–440 MHz operation, ±0.4 dB linearity; (7)Slope of +24 mV/dB, intercept of -108 dBV; (8)Highly stable scaling over temperature; (9)Fully differential dc-coupled signal path; (10)100 ns power-up time, 1 mA sleep current.

Diagrams