LOG2112AIDW

Overview

The LOG2112AIDW is a precision logarithmic amplifier manufactured by Texas Instruments, housed in a 16-pin SOIC package. It features four channels with a 45 kHz 3dB bandwidth and operates on supply voltages between 9 V and 36 V. Key electrical specifications include an input bias current of 5 pA, an input offset voltage of 1.5 mV, and a typical common-mode rejection ratio of 100 dB. The device draws 3.5 mA of operating current and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Provides precise logarithmic amplification for signal processing applications
• Integrates four independent channels within a single compact package
• Delivers high common-mode rejection for accurate signal measurement

Applications

• Precision log and log ratio amplifier circuits
• RF detection systems requiring logarithmic response
• Signal conditioning for wide dynamic range inputs

Procurement Notes

Verify the specific suffix against official documentation to confirm packaging type and temperature grade. Ensure compatibility with required supply voltage ranges and thermal management strategies for the intended operating environment. Cross-reference datasheet revisions to confirm pinout and electrical characteristics match design requirements before finalizing procurement.

Selection Notes

Select this component when multi-channel logarithmic conversion is required with low input bias current. Evaluate the 45 kHz bandwidth against signal frequency needs. Confirm that the 9 V to 36 V supply range aligns with system power constraints. Consider the SOIC-16 footprint for PCB layout integration compared to alternative packages.

Part Context

This part belongs to the LOG2112 series of logarithmic amplifiers from Texas Instruments. It is categorized under amplifier ICs and specifically designed for precision analog signal processing tasks. The device complements other TI solutions by offering integrated multi-channel functionality in a standard surface-mount package.

Replacement Considerations

The LOG2112AIDWR is a verified substitute variant differing primarily in reel packaging rather than functional performance. Verify package compatibility and ordering quantity requirements when substituting tube-packaged units with reel-packaged equivalents.