AD8305 Logarithmic Converter

AD8305 Logarithmic Converter

The AD83051 is an inexpensive microminiature logarithmic converter optimized for determining optical power in fiber optic systems. It uses an advanced implementation of a classic translinear (junction based) technique to provide a large dynamic range in a versatile and easily used form. A single-sup.

Features

Optimized for fiber optic photodiode interfacing Measures current over 5 decades Law conformance 0.1 dB from 10 nA to 1 mA Single- or dual-supply operation (3 V to 12 V total) Full log-ratio capabilities Nominal slope of 10 mV/dB (200 mV/decade) Nominal intercept of 1 nA (set by external resistor) Optional adjustment of slope and intercept Complete and temperature stable Rapid response time for a given current level Miniature 16-lead chip scale package (LFCSP 3 mm × 3 mm) Low power: ~5 mA quiescent current APPLICATIONS Optical power measurement Wide range baseband logarithmic compression Measu.