ADL5304ACPZ-R7

Overview

The ADL5304ACPZ-R7 is a high-speed logarithmic converter from Analog Devices, packaged in a 32-lead, 5 mm × 5 mm LFCSP. It provides a measurement range of 1 pA to 10 mA (200 dB) with a nominal log slope of 10 mV/dB (200 mV/decade). The device features an overall bandwidth exceeding 4 MHz for inputs greater than 1 µA, and law conformance of ±0.25 dB from 100 pA to 100 µA. It operates on a single positive supply of 5 V or dual supplies ranging from 4.5 V to 10.5 V, functioning within a temperature range of -40°C to +85°C.

Feature Summary

• Optimized for very fast response at all input currents
• Adaptive photodiode biasing for low dark current
• Programmable log slope and intercept
• Log ratio or fixed-intercept operation

Applications

• High accuracy optical power measurement
• Wide range baseband log compression
• Versatile detector for high speed APC loops

Procurement Notes

Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm that the component meets RoHS standards as specified by the manufacturer. Ensure the ordering part number matches the exact package type and temperature rating required for your design. Cross-reference the datasheet revision to confirm pinout compatibility before finalizing procurement.

Selection Notes

Select this component for applications requiring wide dynamic range baseband signal processing. It is suitable for systems needing precise optical power monitoring without external calibration. Consider the adaptive photodiode bias feature if minimizing dark current is critical. Verify that the input current requirements fall within the specified 1 pA to 10 mA range for optimal performance.

Part Context

This part belongs to the ADL5304 series of high-speed logarithmic converters. It is designed for fiber optic supervisory systems and general-purpose log amplification. The device integrates precision voltage references and a reference current source, reducing external component count. It serves as a versatile detector for various analog signal conditioning tasks.

Replacement Considerations

Consult the official datasheet ordering guide for confirmed substitute part numbers. Verify pinout and electrical specifications match before substitution.