LOG101/104 Precision Logarithmic and Logarithmic Ratio Amplifier

Related Component PDF Download:

LOG101/104 is a general purpose integrated circuit that logarithmically or logarithmically scales the input current relative to a reference current and tests the input signal over a wide dynamic range. When logarithmic ratio operations are applied, one signal current can come from a photodiode and the other from a series resistance with an external precise reference. The output signal of VOUT is fine tuned with input current per decimal 1V, allowing a dynamic range of 7 decimal input current. LOG101/104 has low DC misalignment voltage and low temperature drift characteristics and can be used to measure low level signals at wide ambient temperatures. LOG101/104 can be used for logarithmic, logarithmic ratio and inverse logarithmic calculations. Communication, analytical, medical, industrial, test and general instruments; Photodiode signal compression amplification; Compress analog signals at the front end of analog-digital (A/D) conversion. The legs of LOG101/104 are arranged as shown in the figure.

Internal block diagram: