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LOG101 對數(shù)放大器

數(shù)據(jù):

描述

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.

特性

  • 易于使用的完整核心功能
  • 高精度:超過5年的0.01%FSO
  • < li>寬輸入動態(tài)范圍:
    7.5十年,100pA至3.5mA
  • 低靜態(tài)電流:1mA
  • 寬電源范圍:±4.5V至±18V
  • 應用程序
    • 日志,日志比率,反日志計算:
      通信,分析,醫(yī)療,工業(yè),測試和一般儀器
    • 光電信號壓縮AMPS
    • 模擬到數(shù)字(A /D)轉(zhuǎn)換器前面的模擬信號壓縮

注意:受美國專利保護# 6667650;其他專利正在申請中。

參數(shù) 與其它產(chǎn)品相比 對數(shù)放大器

 
Scale Factor (V/decade)
Input Current Range (Min) (nA)
Input Current Range (Max) (mA)
Conformity Error (initial 5 decades) (Max) (%)
Conformity Error (initial 5 decades) (typ. over temp) (%/degree C)
Offset Voltage (Input Amplifiers) (Max) (mV)
Vs (+/-) (Min) (V)
Vs (+/-) (Max) (V)
Iq (Max) (mA)
Reference Type
Auxiliary Op Amps
Full-Scale Output Voltage (Min) (+/- V)
Full-Scale Output Voltage (Max) (+/- V)
Operating Temperature Range (C)
Pin/Package
Package Group
Package Size: mm2:W x L (PKG)
Specified Voltage (+/- V)
LOG101
1    
100    
3.5    
0.2    
0.0001    
1.5    
4.5    
18    
1.5    
External    
0    
1.2    
1.5    
-40 to 85    
8SOIC    
SOIC    
8SOIC: 29 mm2: 6 x 4.9(SOIC)    
5    

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