GENERAL DESCRIPTION
The ADL5306∗ is a low cost microminiature logarithmic converter optimized for determining optical power in fiber optic systems. The ADL5306 is derived from the AD8304 and AD8305 translinear logarithmic converters. This family of devices provides wide measurement dynamic range in a versatile and easy-to-use form. A single-supply voltage between 3 V and 5.5 V is adequate; dual supplies may optionally be used. Low quiescent current (5 mA typical) permits use in battery-operated applications.

FEATURES
    Optimized for fiber optic photodiode interfacing
    Measures current over 3 decades Law conformance 0.1 dB from 100 nA to 100 μA
    Single- or dual-supply operation (3 V to ±5.5 V total)
    Full log-ratio capabilities
    Temperature stable
    Nominal slope of 10 mV/dB (200 mV/decade)
    Nominal intercept of 1 nA (set by external resistor) Optional adjustment of slope and intercept
    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
    Low cost optical power measurement
    Wide range baseband logarithmic compression
    Measurement of current and voltage ratios
    Optical absorbance measurement