PRODUCT DESCRIPTION

The ADL53101 low cost, dual logarithmic amplifier converts input current over a wide dynamic range to a linear-in-dB output voltage. It is optimized to determine the optical power in wide-ranging optical communication system applications, including control circuitry for lasers, optical switches, attenuators, and amplifiers, as well as system monitoring.

FEATURES

2 independent channels optimized for photodiode interfacing

6-decade input dynamic range

Law conformance 0.3 dB from 3 nA to 3 mA

Temperature-stable logarithmic outputs

Nominal slope 10 mV/dB (200 mV/dec), externally scalable

Intercepts may be independently set by external resistors

User-configurable output buffer amplifiers

Single- or dual-supply operation

Space-efficient, 24-lead 4 mm × 4 mm LFCSP

Low power:

APPLICATIONS

Gain and absorbance measurements

Multichannel power monitoring

General-purpose baseband log compression