The LOG104 is a versatile integrated circuit that computes the logarithm or log ratio of an input current relative to a reference current.
●The LOG104 is tested over a wide dynamic range of input signals. In log ratio applications, a signal current can come from a photodiode, and a reference current from a resistor in series with a precision external reference.
●The output signal at VOUT is trimmed to 0.5V per decade of input current, allowing seven decades of input current, dynamic range.
●Low DC offset voltage and temperature drift allow accurate measurement of low-level signals over a wide environmental temperature range. The LOG104 is specified over the temperature range 5°C to +75°C, with operation over 40°C to +85°C.
● EASY-TO-USE COMPLETE CORE FUNCTION
● HIGH ACCURACY: 0.01% FSO Over 5 Decades
● WIDE INPUT DYNAMIC RANGE:
● 7.5 Decades, 100pA to 3.5mA
● LOW QUIESCENT CURRENT: 1mA
● WIDE SUPPLY RANGE: ±4.5V to ±18V
● APPLICATIONS
● LOG, LOG RATIO, ANTI-LOG COMPUTATION:
● Communication, Analytical, Medical, Industrial, Test, General Instrumentation
● PHOTODIODE SIGNAL COMPRESSION AMP
● ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL(A/D)CONVERTER
●Note: Protected under US Patent #6,667,650; other patents pending.
●All trademarks are the property of their respective owners.
