ADL5315ACPZ-WP

Overview

The ADL5315ACPZ-WP is a precision high-side current mirror manufactured by Analog Devices Inc. in an 8-lead LFCSP package. It accurately mirrors input current with a 1:1 ratio over a wide range of 3 nA to 3 mA, maintaining linearity within 1%. The device operates on a single supply voltage from 2.7 V to 8 V and features a stable mirror input voltage held 1 V below the supply using an internal reference or external setting.

Feature Summary

• Mirrors input current with a precise 1:1 ratio across six decades
• Maintains linearity within 1% over the full operating range
• Features adjustable input current limit for circuit protection

Applications

• Optical power monitoring from a single photodiode
• General voltage biasing with precision current monitoring
• Voltage-to-current conversion circuits

Procurement Notes

Verify that the 'WP' suffix denotes a specific wafer lot or processing variant distinct from standard tape-and-reel packaging. Confirm RoHS compliance status directly with the manufacturer as datasheet details may vary by revision. Ensure the component matches the required 8-lead LFCSP footprint and pinout specifications before integration into the design.

Selection Notes

Select this component when a wide dynamic range current mirroring capability is required alongside high accuracy. It is particularly suitable for interfacing with PIN photodiodes where a linear-in-dB output is needed. Consider the 2.7 V to 8 V supply range and the miniature 2 mm x 3 mm package size for space-constrained applications.

Part Context

This part belongs to the ADL5315 family of precision current mirrors designed for optical sensing applications. It complements other logarithmic amplifiers like the ADL5310 to form complete detection systems. The WP variant shares core electrical characteristics with the standard ACPZ-R7 version but may differ in physical handling or lot traceability.

Replacement Considerations

The ADL5315ACPZ-R7 is a confirmed substitute with identical electrical performance. Verify if the 'WP' suffix indicates any non-functional differences such as packaging format or specific quality certifications before swapping.