本公司分销TI,德州仪器,主要IC产品有：数字信号处理器、模拟和混合信号器件、数字逻辑、ASIC、微控制器、语音和图形处理器、可编程逻辑、军用器件等。

LOG112  状态:   ACTIVE

片上电压参考为 2.5V 的精密对数和对数比放大器

相关型号： LOG112AIDE4 LM358DR LM324DR TMS320LF2407APGEA TL494CN NE555 LM358 TMS320F2812PGFA TL494 LM393 TVP5150AM1PBSR

说明

The LOG112 and LOG2112 are versatile integrated circuits that compute the logarithm or log ratio of an input current relative to a reference current. V_LOGOUT of 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.

特性

• EASY-TO-USE COMPLETE FUNCTION
• OUTPUT SCALING AMPLIFIER
• ON-CHIP 2.5V VOLTAGE REFERENCE
• HIGH ACCURACY: 0.2% FSO Over 5 Decades
• WIDE INPUT DYNAMIC RANGE:
     7.5 Decades, 100pA to 3.5mA
• LOW QUIESCENT CURRENT: 1.75mA
• WIDE SUPPLY RANGE: ±4.5V to ±18V
• PACKAGES: SO-14 (narrow) and SO-16
• APPLICATIONS
  • LOG, LOG RATIO:
       Communication, Analytical, Medical, Industrial, Test, General Instrumentation
  • PHOTODIODE SIGNAL COMPRESSION AMP
  • ANALOG SIGNAL COMPRESSION IN FRONT OF ANALOG-TO-DIGITAL (A/D) CONVERTER
  • ABSORBANCE MEASUREMENT
  • OPTICAL DENSITY MEASUREMENT

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