Dual Log Converter Makes Optical Power Monitoring Easier Than Ever

Feb. 2, 2004
Many optical data-transmission systems require accurate measurement of the light output at different parts of the systems. Some of these systems need light power as a feedback signal to optimize system performance. The hard part is accurately...

Many optical data-transmission systems require accurate measurement of the light output at different parts of the systems. Some of these systems need light power as a feedback signal to optimize system performance. The hard part is accurately measuring power.

Analog Devices optimized its ADL5310 dual logarithmic converter for such situations. Potential applications include laser-control circuitry, optical switches, attenuators, and system monitoring. The device will help simplify the design of control loops for erbium-doped fiber amplifiers (EDFAs), variable optical attenuators (VOAs), and optical add/drop multiplexers.

The inputs to the ADL5310 come from photodiodes whose varying currents are converted into linear-in-decibel voltage outputs. The input dynamic range spans six decades from 3 nA to 3 mA. The nominal output slope of 10 mV/dB (200 mV/decade) is externally scalable. External resistors may independently set intercepts. The output buffer amplifiers are user-configurable. The device operates from a single supply as low as 3 V. However, dual-supply operation is possible as well.

The ADL5310 is housed in a space-efficient 24-lead 4- by 4-mm LFCSP. Pricing is $11.33 each in 1000-unit quantities.

Analog Deviceswww.analog.com/ADL5310 (800) 262-5643

Sponsored Recommendations

Board-Mount DC/DC Converters in Medical Applications

March 27, 2024
AC/DC or board-mount DC/DC converters provide power for medical devices. This article explains why isolation might be needed and which safety standards apply.

Use Rugged Multiband Antennas to Solve the Mobile Connectivity Challenge

March 27, 2024
Selecting and using antennas for mobile applications requires attention to electrical, mechanical, and environmental characteristics: TE modules can help.

Out-of-the-box Cellular and Wi-Fi connectivity with AWS IoT ExpressLink

March 27, 2024
This demo shows how to enroll LTE-M and Wi-Fi evaluation boards with AWS IoT Core, set up a Connected Health Solution as well as AWS AT commands and AWS IoT ExpressLink security...

How to Quickly Leverage Bluetooth AoA and AoD for Indoor Logistics Tracking

March 27, 2024
Real-time asset tracking is an important aspect of Industry 4.0. Various technologies are available for deploying Real-Time Location.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!