LOG2112 Series
Dual precision logarithmic and log ratio amplifier with on-chip 2.5-V voltage reference
Manufacturer: Texas Instruments
Catalog
Dual precision logarithmic and log ratio amplifier with on-chip 2.5-V voltage reference
Key Features
• EASY-TO-USE COMPLETE FUNCTIONOUTPUT SCALING AMPLIFIERON-CHIP 2.5V VOLTAGE REFERENCEHIGH ACCURACY: 0.2% FSO Over 5 DecadesWIDE INPUT DYNAMIC RANGE:7.5 Decades, 100pA to 3.5mALOW QUIESCENT CURRENT: 1.75mAWIDE SUPPLY RANGE: ±4.5V to ±18VPACKAGES: SO-14 (narrow) and SO-16APPLICATIONSLOG, LOG RATIO:Communication, Analytical, Medical, Industrial, Test, General InstrumentationPHOTODIODE SIGNAL COMPRESSION AMPANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D) CONVERTERABSORBANCE MEASUREMENTOPTICAL DENSITY MEASUREMENTAll trademarks are the property of their respective owners.EASY-TO-USE COMPLETE FUNCTIONOUTPUT SCALING AMPLIFIERON-CHIP 2.5V VOLTAGE REFERENCEHIGH ACCURACY: 0.2% FSO Over 5 DecadesWIDE INPUT DYNAMIC RANGE:7.5 Decades, 100pA to 3.5mALOW QUIESCENT CURRENT: 1.75mAWIDE SUPPLY RANGE: ±4.5V to ±18VPACKAGES: SO-14 (narrow) and SO-16APPLICATIONSLOG, LOG RATIO:Communication, Analytical, Medical, Industrial, Test, General InstrumentationPHOTODIODE SIGNAL COMPRESSION AMPANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D) CONVERTERABSORBANCE MEASUREMENTOPTICAL DENSITY MEASUREMENTAll trademarks are the property of their respective owners.
Description
AI
The LOG112 and LOG2112 are versatile integrated circuits that compute the logarithm or log ratio of an input current relative to a reference current. VLOGOUTof 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.
The LOG112 and LOG2112 are versatile integrated circuits that compute the logarithm or log ratio of an input current relative to a reference current. VLOGOUTof 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.