ADL5308ACCZ

Overview

The ADL5308ACCZ is a logarithmic transimpedance amplifier optimized for wide dynamic range signal level monitoring in fiber optic systems. It produces an accurate, temperature-compensated output voltage proportional to the logarithm of the ratio between the input current at pin INP and a reference current. The device features a fast transient response with rise/fall times under 2.4 µs and settling times under 3.5 µs. It offers a logarithmic slope of 200 mV/decade and operates over an input current range from 10 pA to 25 mA.

Feature Summary

• Fast transient response with minimal undershoot and flat frequency response
• Accurately trimmed logarithmic response with low conformance error
• Built-in comparator with adjustable hysteresis and latch enable
• Adaptive photodiode biasing to minimize dark current and saturation

Applications

• Optical power monitoring
• Erbium-doped fiber amplifiers (EDFA)

Procurement Notes

Verify the specific suffix ACCZ corresponds to the standard LGA package configuration. Confirm that the I2C interface timing requirements align with your system controller capabilities. Ensure proper ESD precautions are taken during handling due to the sensitivity of the input stage. Check for any regional shipping restrictions or compliance certifications required for your deployment environment.

Selection Notes

Select this component when high-speed optical signal monitoring with wide dynamic range is required. It is suitable for applications needing direct optical gain measurements via the ratio input. Consider the small LGA package size for space-constrained designs. Evaluate the need for adaptive photodiode biasing to optimize performance across varying light levels.

Part Context

The ADL5308 is part of Analog Devices' portfolio of precision analog signal chain components designed for telecommunications and sensing applications. It integrates logarithmic conversion, comparator functions, and photodiode bias control into a single monolithic chip, reducing the need for external discrete components and simplifying board layout.

Replacement Considerations

No public confirmed substitute part numbers are available.