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Part Number: LOG101
Description: `The LOG101 is a versatile integrated circuit that computes the log...
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LOG101
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DataSheet
General Description
LOG101 General Description
`The LOG101 is a versatile integrated circuit that computes the logarithm or log ratio of an input current relative to a reference current.
`The LOG101 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 1V 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 LOG101 is specified over the temperature range 5 to +75, with operation over 40 to +85.
LOG101 Maximum Ratings
Supply Voltage, V+ to V .................................................................... 36V
Input Voltage .................................................... (V) 0.5 to (V+) + 0.5V
Input Current ..................................................................................±10mA
Output Short-Circuit(2) ............................................................. Continuous
Operating Temperature ......................................................40 to +85
Storage Temperature ..................................................... ..55 to +125
Junction Temperature ...................................................................... +150
Lead Temperature (soldering, 10s) ................................................. +300
LOG101 Features
· 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
· 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
LOG101 Typical Application
· LOG, LOG RATIO COMPUTATION: Communication, Analytical, Medical, Industrial, Test, and General Instrumentation
· PHOTODIODE SIGNAL COMPRESSION AMPS
· ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D) CONVERTERS
· PHOTODIODE SIGNAL COMPRESSION AMPS
· ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D) CONVERTERS
LOG101 Connection Diagram
LOG101
PDF/DataSheet Download
- Datasheet: LOG101
- File Size: 287763 KB
- Manufacturer: BURR-BROWN [Burr-Brown Corporation]
- Click here to Download
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