LOG101 对数放大器

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 VOUT 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

LOG101
Scale Factor (V/decade) 1    
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
LOG101 特性
LOG101 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
LOG101AID ACTIVE -40 to 85 8.35 | 1ku SOIC (D) | 8 75 | TUBE  
LOG101AIDE4 ACTIVE -40 to 85 8.35 | 1ku SOIC (D) | 8 75 | TUBE  
LOG101AIDR ACTIVE -40 to 85 6.95 | 1ku SOIC (D) | 8 2500 | LARGE T&R  
LOG101AIDRE4 ACTIVE -40 to 85 6.95 | 1ku SOIC (D) | 8 2500 | LARGE T&R  
LOG101 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
LOG101AID Green (RoHS & no Sb/Br)   CU NIPDAUAG   Level-2-260C-1 YEAR LOG101AID LOG101AID
LOG101AIDE4 Green (RoHS & no Sb/Br)   CU NIPDAUAG   Level-2-260C-1 YEAR LOG101AIDE4 LOG101AIDE4
LOG101AIDR Green (RoHS & no Sb/Br)   CU NIPDAUAG   Level-2-260C-1 YEAR LOG101AIDR LOG101AIDR
LOG101AIDRE4 Green (RoHS & no Sb/Br)   CU NIPDAUAG   Level-2-260C-1 YEAR LOG101AIDRE4 LOG101AIDRE4
LOG101 应用技术支持与电子电路设计开发资源下载
  1. LOG101 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 LOG101 with the LOG101 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)
LOG101 工具与软件
培训内容 型号 软件/工具类型
LOG101EVM 评估模块 LOG101EVM 开发电路板/EVM