Logarithmic amplifiers
Logarithmically scaled outputs for a wide, dynamic range of voltage or current inputs
Our logarithmic amplifiers are designed for measuring low-level and wide dynamic range currents common in optical modules, lasers, and medical equipment. These devices offer low log conformity and wide dynamic range capability and are offered in tiny 4-mm x 4-mm lead-less packages for space constrained applications.
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Design & development resources
Simulation tool
PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool
SPICE-based analog simulation program
TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Evaluation board
LOG114 Evaluation Module
The LOG114EVM is a ready-to-use platform for evaluating the performance of the LOG114 in various configurations.The LOG114EVM comes configured to operate on a single 5-V power supply. The circuit used in the LOG114EVM is designed to operate over a wide range of input currents (10 nA to 10 mA) and (...)
Technical resources
Analog Design Journal
Integrated logarithmic amplifiers for industrial applications
This article describes the operation and architecture of integrated log amps and provides two application examples using our LOG112 and LOG2112.
Selection guide
Enhanced Product Selection Guide (Rev. C)
Discover log amp devices optimized for avionics and defense applications.
EVM User's guide
LOG114EVM User Guide
Learn more about the characteristics, operation, and use of the LOG114EVM evaluation board.