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LOG102AIDRG4 PDF预览

LOG102AIDRG4

更新时间： 2024-11-24 14:43:11
品牌 Logo 应用领域
德州仪器 - TI 放大器光电二极管
页数 文件大小 规格书
17页 474K
描述
LOG OR ANTILOG AMPLIFIER, 1.4MHz BAND WIDTH, PDSO14, GREEN, PLASTIC, MS-012AB, SOIC-14

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LOG102AIDRG4 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：GREEN, PLASTIC, MS-012AB, SOIC-14针数：14
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：5.84
Is Samacsys：N模拟集成电路 - 其他类型：LOG OR ANTILOG AMPLIFIER
标称带宽：1.4 MHzJESD-30 代码：R-PDSO-G14
JESD-609代码：e4长度：8.65 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：14最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP14,.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)：2 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：COMMERCIAL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

LOG102AIDRG4 数据手册

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LOG102  
L
O
G
1
0
2
SBOS211B – DECEMBER 2001– REVISED APRIL 2005  
Precision  
LOGARITHMIC AND LOG RATIO AMPLIFIER  
FEATURES  
DESCRIPTION  
The LOG102 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 LOG RATIO FUNCTION  
● OUTPUT AMPLIFIERS FOR SCALING AND  
SIGNAL LOSS INDICATION  
The LOG102 is tested over a wide dynamic range of input  
signals. In log ratio applications, a signal current can be  
generated by a photodiode, and a reference current from a  
resistor in series with a precision external voltage reference.  
● HIGH ACCURACY: 0.15% FSO Total Error Over  
6 Decades  
● WIDE INPUT DYNAMIC RANGE:  
6 Decades, 1nA to 1mA  
In the block diagram shown below, A3 and A4 are identical,  
uncommitted op amps that can be used for a variety of  
functions, such as filtering, offsetting, adding gain or as a  
comparator to detect loss of signal.  
● LOW QUIESCENT CURRENT: 1.25mA  
● SO-14 PACKAGE  
The output signal at VLOG OUT is trimmed to 1V per decade of  
input current. It can be scaled with an output amplifier, either  
A3 or A4.  
APPLICATIONS  
● ONET, OPTICAL POWER METERS  
Low dc offset voltage and temperature drift allow accurate  
measurement of low-level signals over a wide environmental  
temperature range. The LOG102 is specified over the tem-  
perature range, 0°C to +70°C, with operation over –40°C to  
+85°C.  
● LOG, LOG RATIO COMPUTATION:  
Communication, Analytical, Medical, Industrial,  
Test, General Instrumentation  
● PHOTODIODE SIGNAL COMPRESSION AMP  
NOTE: U.S. Patent Pending.  
● ANALOG SIGNAL COMPRESSION IN FRONT  
OF A/D CONVERTER  
● ABSORBANCE MEASUREMENT  
● OPTICAL DENSITY MEASUREMENT  
R1  
R2  
VLOG OUT = LOG (I1/I2)  
VOUT3 = G • LOG (I1/I2), G = 1 +R2/R1  
CC  
I2  
V+  
6
VLOG OUT  
+IN3  
3
–IN3  
5
4
14  
I1  
1
Q1  
Q2  
7
A3  
VOUT3  
+IN4  
A2  
A1  
12  
8
A4  
VOUT4  
A4 can be used  
as comparator for  
signal loss detect.  
9
10  
11  
–IN4  
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 © 2001-2005, Texas Instruments Incorporated  
www.ti.com  
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LOG102AIDRG4 替代型号

型号 品牌 替代类型 描述 数据表
LOG102AIDG4 TI

完全替代

 Logarithmic and Log Ratio Amplifier 14-SOIC 0 to 70
LOG102AIDR TI

完全替代

 LOGARITHMIC AND LOG RATIO AMPLIFIER
LOG102AID TI

类似代替

 LOGARITHMIC AND LOG RATIO AMPLIFIER

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