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LOG101 PDF预览

LOG101

更新时间: 2024-01-08 08:14:57
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13页 280K
描述
Precision LOGARITHMIC AND LOG RATIO AMPLIFIER

LOG101 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:SOP, SOP8,.25针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.33.00.01Factory Lead Time:1 week
风险等级:5.24模拟集成电路 - 其他类型:LOG OR ANTILOG AMPLIFIER
标称带宽:0.01 MHzJESD-30 代码:R-PDSO-G8
JESD-609代码:e4长度:4.9 mm
湿度敏感等级:3负电源电压最大值(Vsup):-18 V
负电源电压最小值(Vsup):-4.5 V标称负供电电压 (Vsup):-5 V
最大负输入电压:-3.8 V功能数量:1
端子数量:8最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):260最大正输入电压:3.5 V
电源:+-5 V认证状态:Not Qualified
座面最大高度:1.75 mm子类别:Analog Computational Functions
最大供电电流 (Isup):1.5 mA最大供电电压 (Vsup):18 V
最小供电电压 (Vsup):4.5 V标称供电电压 (Vsup):5 V
表面贴装:YES技术:BIPOLAR
温度等级:INDUSTRIAL端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3.9 mmBase Number Matches:1

LOG101 数据手册

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LOG101  
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SBOS242B – MAY 2002 – REVISED JUNE 2004  
Precision  
LOGARITHMIC AND LOG RATIO AMPLIFIER  
DESCRIPTION  
FEATURES  
The LOG101 is a versatile integrated circuit that computes  
the logarithm or log ratio of an input current relative to a  
reference current.  
EASY-TO-USE COMPLETE CORE FUNCTION  
HIGH ACCURACY: 0.01% FSO Over 5 Decades  
WIDE INPUT DYNAMIC RANGE:  
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.  
7.5 Decades, 100pA to 3.5mA  
LOW QUIESCENT CURRENT: 1mA  
WIDE SUPPLY RANGE: ±4.5V to ±18V  
The output signal at VOUT is trimmed to 1V per decade of input  
current allowing seven decades of input current dynamic  
range.  
APPLICATIONS  
LOG, LOG RATIO COMPUTATION:  
Communication, Analytical, Medical, Industrial,  
Test, and General Instrumentation  
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 tem-  
perature range –5°C to +75°C, with operation over  
–40°C to +85°C.  
PHOTODIODE SIGNAL COMPRESSION AMPS  
ANALOG SIGNAL COMPRESSION IN FRONT  
Note: Protected under US Patent #6,667,650; other patents pending.  
OF ANALOG-TO-DIGITAL (A/D) CONVERTERS  
I2  
CC  
VOUT = (1V) LOG (I1/I2)  
V+  
4
8
I1  
LOG101  
1
Q1  
Q2  
3
A2  
A1  
VOUT  
R2  
R1  
5
6
GND  
V–  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright © 2002-2004, Texas Instruments Incorporated  
www.ti.com  

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Logarithmic and Log Ratio Amplifier 14-SOIC 0 to 70