Texas Instruments

LOG102AIDR  

OP Amps, Buffer Amps ICs

LOG102AIDR Description

The LOG102AIDR from Texas Instruments is a precision logarithmic and log ratio amplifier designed for high-accuracy signal processing in demanding applications. Packaged in a 14-SOIC surface-mount form factor and supplied in Tape & Reel (TR), this IC integrates a single logarithmic amplifier circuit with a 1.4 MHz gain bandwidth product and a 0.5V/µs slew rate, enabling efficient dynamic response. Operating within a 9V to 36V supply range, it features an ultra-low 5 pA input bias current and 300 µV input offset voltage, ensuring minimal error in sensitive measurements. Though marked as Obsolete, it remains ROHS3 Compliant and REACH Unaffected, suitable for legacy designs requiring stable performance in 0°C to 70°C environments.

LOG102AIDR Features

• High Precision: Logarithmic and log ratio functionality with 45 kHz bandwidth for accurate signal compression/expansion.
• Low Power: Consumes only 1.25mA supply current, ideal for battery-operated systems.
• Wide Voltage Range: Supports 9V–36V spans, accommodating diverse power supplies.
• Low Noise: 5 pA input bias current minimizes distortion in high-impedance circuits.
• Robust Packaging: MSL 3 (168 hours) moisture sensitivity ensures reliability in humid conditions.

LOG102AIDR Applications

The LOG102AIDR excels in:

• Optical Power Measurement: Logarithmic compression for photodiode outputs in fiber optics.
• Medical Instrumentation: Accurate signal scaling in ECG or ultrasound equipment.
• Industrial Control: Dynamic range compression in process sensors (e.g., pH probes).
• Communications: RF power monitoring and dB-linear signal processing.

Conclusion of LOG102AIDR

A versatile yet discontinued solution, the LOG102AIDR offers unmatched logarithmic accuracy and low-power operation for legacy designs. Its wide supply range and low noise make it ideal for precision analog systems, though newer alternatives should be considered for future-proofing. Engineers relying on stable, high-performance logarithmic amplification will find this IC a reliable choice for niche applications.

LOG102AIDR Documents

Download datasheets and manufacturer documentation for LOG102AIDR

Datasheets :

LOG102      

PCN Obsolescence/ EOL :

EOL 11/Jan/2016      

HTML Datasheet :

LOG102