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LOG101AIDRE4, LOG102, LOG102A

Table of contents:
Info of LOG101AIDRE4
Info of LOG102
Info of LOG102A

LOG101AIDRE4, LOG102, LOG102A Selling Leads, Datasheet

MFG:Texas Instruments Category:Integrated Circuits (ICs) Package Cooled:n/a D/C:09+

LOG101AIDRE4, LOG102, LOG102A Datasheet download

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Part Number: LOG101AIDRE4

Category: Integrated Circuits (ICs)

MFG: Texas Instruments

Package Cooled: n/a

D/C: 09+

Description: IC OPAMP LOGAR 45KHZ SGL 8SOIC

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LOG101AIDRE4 Parameters

Technical/Catalog Information	LOG101AIDRE4
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
Packaging	Tape & Reel (TR)
Amplifier Type	Logarithmic and Log Ratio
Number of Circuits	1 - Single
Package / Case	8-SOIC (3.9mm Width)
Slew Rate	-
Gain Bandwidth Product	-
Current - Supply	1mA
Current - Output / Channel	18mA
Voltage - Supply, Single/Dual (±)	±4.5 V ~ 18 V
Output Type	-
-3db Bandwidth	45kHz
Current - Input Bias	5pA
Operating Temperature	-5°C ~ 75°C
Voltage - Input Offset	300V
Drawing Number	296; 4040047-2; D; 8
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	LOG101AIDRE4 LOG101AIDRE4

LOG102 General Description

The LOG102 is a versatile integrated circuit that computes the logarithm or log ratio of an input current relative to a reference current.

The LOG102 is tested over a wide dynamic range of input signals. In log ratio applications, a signal current can be generated by a photodiode, and a reference current from a resistor in series with a precision external voltage reference.

A3 and A4 are identical, uncommitted op amps that can be used for a variety of functions, such as filtering, offsetting, adding gain or as a comparator to detect loss of signal.

The output signal at VLOG OUT is trimmed to 1V per decade of input current. It can be scaled with an output amplifier, either A3 or A4.

Low dc offset voltage and temperature drift allow accurate measurement of low-level signals over a wide environmental temperature range. The LOG102 is specified over the temperature range, 0°C to +70, with operation over 40 to +85.

LOG102 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

LOG102 Features

· EASY-TO-USE COMPLETE LOG RATIO FUNCTION
· OUTPUT AMPLIFIERS FOR SCALING AND SIGNAL LOSS INDICATION
· HIGH ACCURACY: 0.15% FSO Total Error Over 6 Decades
· WIDE INPUT DYNAMIC RANGE: 6 Decades, 1nA to 1mA
· LOW QUIESCENT CURRENT: 1.25mA
· SO-14 PACKAGE

LOG102 Typical Application

· ONET, OPTICAL POWER METERS
· LOG, LOG RATIO COMPUTATION: Communication, Analytical, Medical, Industrial, Test, General Instrumentation
· PHOTODIODE SIGNAL COMPRESSION AMP
· ANALOG SIGNAL COMPRESSION IN FRONT OF A/D CONVERTER
· ABSORBANCE MEASUREMENT
· OPTICAL DENSITY MEASUREMENT

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