• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

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 V_OUT 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°C to +75°C, with operation over –40°C to +85°C.

特性

• 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
• APPLICATIONS
  • LOG, LOG RATIO, ANTI-LOG 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

Note: Protected under US Patent #6,667,650; other patents pending.