ADL5310ACP

Overview

The ADL5310ACP is a dual logarithmic converter manufactured by Analog Devices Inc. It operates within a supply voltage range of 3 V to 12 V and draws a quiescent current of approximately 9.5 mA. The device provides a 120 dB dynamic range, accepting input currents from 3 nA to 3 mA. It features a nominal slope of 10 mV/dB (200 mV/decade) with law conformance of 0.3 dB across the specified range. The component utilizes a 24-lead LFCSP package rated for operation between -40°C and +85°C.

Feature Summary

• Dual independent channels optimized for photodiode interfacing
• Temperature-stable logarithmic outputs with externally scalable slope
• User-configurable output buffer amplifiers for signal processing
• Supports single-supply or dual-supply operation

Applications

• Gain and absorbance measurements
• Multichannel power monitoring in optical systems
• General-purpose baseband log compression

Procurement Notes

Verify the specific suffix against the manufacturer's ordering guide to confirm packaging type and tape-and-reel specifications. Ensure compatibility with the required operating temperature range and supply voltage constraints. Confirm that the exposed pad connection requirements are met during PCB layout to maintain thermal performance and electrical grounding integrity.

Selection Notes

Select this component when a wide dynamic range logarithmic conversion is required for low-level current signals. The dual-channel architecture allows for simultaneous ratio measurements or independent channel monitoring. Consider the external resistor requirements for setting reference currents and intercept points if precise calibration is necessary for the target application.

Part Context

This device belongs to the ADL5310 family of translinear logarithmic amplifiers. It serves as a compact solution for converting wide-ranging input currents into linear-in-dB output voltages. The design integrates internal bias circuitry shared between channels to improve power consumption and channel matching compared to discrete implementations.

Replacement Considerations

The ADL5310 is functionally equivalent to the dual AD8305 but offers an enhanced dynamic range of 120 dB. Verify pinout compatibility and package dimensions when substituting with other logarithmic converters in the Analog Devices portfolio.