LOG104 对数放大器

The LOG104 is a versatile integrated circuit that computes the logarithm or log ratio of an input current relative to a reference current.

The LOG104 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 0.5V 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 LOG104 is specified over the temperature range –5°C to +75°C, with operation over –40°C to +85°C

LOG104
Scale Factor (V/decade) 0.5    
Input Current Range (Min) (nA) 100    
Input Current Range (Max) (mA) 3.5    
Conformity Error (initial 5 decades) (Max) (%) 0.2    
Conformity Error (initial 5 decades) (typ. over temp) (%/degree C) 0.0001    
Offset Voltage (Input Amplifiers) (Max) (mV) 1.5    
Vs (+/-) (Min) (V) 4.5    
Vs (+/-) (Max) (V) 18    
Iq (Max) (mA) 1.5    
Reference Type External    
Full-Scale Output Voltage (Min) (+/- V) 1.2    
Full-Scale Output Voltage (Max) (+/- V) 1.5    
Operating Temperature Range (C) -40 to 85    
Pin/Package 8SOIC    
Rating Catalog
LOG104 特性
LOG104 芯片订购指南
器件 状态 温度 价格 封装 | 引脚 封装数量 | 封装载体 丝印标记
LOG104AID ACTIVE -40 to 85 8.35 | 1ku SOIC (D) | 8 75 | TUBE  
LOG104AIDE4 ACTIVE -40 to 85 8.35 | 1ku SOIC (D) | 8 75 | TUBE  
LOG104AIDG4 ACTIVE -40 to 85 8.35 | 1ku SOIC (D) | 8 75 | TUBE  
LOG104 质量与无铅数据
器件 环保计划* 铅/焊球涂层 MSL 等级/回流焊峰 环保信息与无铅 (Pb-free) DPPM / MTBF / FIT 率
LOG104AID Green (RoHS & no Sb/Br)   CU NIPDAUAG   Level-3-260C-168 HR LOG104AID LOG104AID
LOG104AIDE4 Green (RoHS & no Sb/Br)   CU NIPDAUAG   Level-3-260C-168 HR LOG104AIDE4 LOG104AIDE4
LOG104AIDG4 Green (RoHS & no Sb/Br)   CU NIPDAUAG   Level-3-260C-168 HR LOG104AIDG4 LOG104AIDG4
LOG104 应用技术支持与电子电路设计开发资源下载
  1. LOG104 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器特殊功能放大器产品选型与价格 . xls
  3. 所选封装材料的热学和电学性质 (PDF 645 KB)
  4. 高速数据转换 (PDF 1967 KB)
  5. 使您的仪器放大器设计达到最佳效果 (zhct011.PDF, 897 KB)
  6. 低成本电流并联监视器 IC 使动圈式仪表设计复兴 (zhct030.PDF, 1.04 MB)
  7. Demystifying the Operational Transconductance Amplifier (sboa117.HTM, 8 KB)
  8. Using the LOG104 with the LOG104 to Generate 4mA to 20mA Output (PDF 167 KB)
  9. 在 PSPICE 中使用德州仪器 (TI) SPICE 模型 (zhca088.HTM, 8 KB)
  10. PowerPAD™ Thermally Enhanced Package (slma002g.HTM, 8 KB)
  11. 运算放大器的单电源操作 (PDF 2174 KB)
  12. Tuning in Amplifiers (PDF 44 KB)
  13. Op Amp Performance Analysis (PDF 76 KB)
  14. An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
  15. Level Shifting Signals with Differential Amplifiers (PDF 23 KB)
  16. Operational Amplifier Macromodels: A Comparison (PDF 59 KB)
LOG104 工具与软件
培训内容 型号 软件/工具类型
LOG104EVM 评估模块 LOG104EVM 开发电路板/EVM