The LOG112 and LOG2112 are versatile integrated circuits that compute the logarithm or log ratio of an input current relative to a reference current. VLOGOUT of the LOG112 and LOG2112 are trimmed to 0.5V per decade of input current, ensuring high precision over a wide dynamic range of input signals.
●The LOG112 and LOG2112 features a 2.5V voltage reference that may be used to generate a precision current reference using an external resistor.
●Low DC offset voltage and temperature drift allow accurate measurement of low-level signals over the specified temperature range of 5°C to +75°C.
● EASY-TO-USE COMPLETE FUNCTION
● OUTPUT SCALING AMPLIFIER
● ON-CHIP 2.5V VOLTAGE REFERENCE
● HIGH ACCURACY: 0.2% FSO Over 5 Decades
● WIDE INPUT DYNAMIC RANGE:
● 7.5 Decades, 100pA to 3.5mA
● LOW QUIESCENT CURRENT: 1.75mA
● WIDE SUPPLY RANGE: ±4.5V to ±18V
● PACKAGES: SO-14 (narrow) and SO-16
● APPLICATIONS
● LOG, LOG RATIO:
● Communication, Analytical, Medical, Industrial, Test, General Instrumentation
● PHOTODIODE SIGNAL COMPRESSION AMP
● ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D) CONVERTER
● ABSORBANCE MEASUREMENT
● OPTICAL DENSITY MEASUREMENT
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