GENERAL DESCRIPTION

The ADL5303is a monolithic logarithmic detector optimized for the measurement of low frequency signal power in fiber optic systems and offers a large dynamic range in a versatile and easily used form. Wide measurement range and accuracy are achieved using proprietary design and precise laser trimming.

FEATURES

Optimized for fiber optic photodiode interfacing

8 full decades of range

Law conformance: 0.1 dB from 1 nA to 1 mA

Single-supply operation: 3.0 V to 5.5 V

Complete and temperature stable

Accurate laser trimmed scaling

Logarithmic slope of 10 mV/dB (at the VLOG pin)

Basic logarithmic intercept at 100 pA

Easy adjustment of slope and intercept

Output bandwidth of 10 MHz, 15 V/μs slew rate

Miniature 16-lead package (LFCSP)

Low power: ~4.5 mA quiescent current (enabled)

APPLICATIONS

High accuracy optical power measurement

Wide range baseband log compression

Versatile detector for APC loops