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参数资料
| 型号： | LOG104AIDRE4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 模拟运算功能 |
| 英文描述： | LOG OR ANTILOG AMPLIFIER, 0.01 MHz BAND WIDTH, PDSO8 |
| 封装： | ROHS COMPLIANT, PLASTIC, MS-012AA, SOIC-8 |
| 文件页数： | 1/13页 |
| 文件大小： | 244K |
| 代理商： | LOG104AIDRE4 |
FEATURES
q EASY-TO-USE COMPLETE CORE FUNCTION
q HIGH ACCURACY: 0.01% FSO Over 5 Decades
q WIDE INPUT DYNAMIC RANGE:
7.5 Decades, 100pA to 3.5mA
q LOW QUIESCENT CURRENT: 1mA
q WIDE SUPPLY RANGE:
±4.5V to ±18V
Precision
LOGARITHMIC AND LOG RATIO AMPLIFIER
DESCRIPTION
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, dy-
namic 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 tem-
perature range –5
°C to +75°C, with operation over –40°C to
+85
°C.
APPLICATIONS
q LOG, LOG RATIO COMPUTATION:
Communication, Analytical, Medical, Industrial,
Test, General Instrumentation
q PHOTODIODE SIGNAL COMPRESSION AMP
q ANALOG SIGNAL COMPRESSION IN FRONT
OF ANALOG-TO-DIGITAL(A/D) CONVERTER
LOG104
www.ti.com
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 2002-2005, Texas Instruments Incorporated
SBOS243C – MAY 2002 – REVISED APRIL 2005
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.
LOG
104
Note: Protected under US Patent #6,667,650; other patents pending.
A
2
A
1
1
5
8
4
6
3
Q
1
Q
2
C
I
2
I
1
R
1
R
2
V–
V
OUT
V+
GND
LOG104
V
OUT = 0.5 LOG (I1/I2)
All trademarks are the property of their respective owners.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LOG112 | 制造商:BB 制造商全称:BB 功能描述:Precision, High-Speed Transimpedance Amplifier |
| LOG112AID | 功能描述:对数放大器 Precision Log & Log Ratio Amp RoHS:否 制造商:Texas Instruments 通道数量:3 带宽:3 dB 共模抑制比（最小值）: 输入补偿电压:+/- 7 mV 输入电压范围（最大值）:5.5 V 工作电源电压:4.5 V to 5.5 V 电源电流:+/- 15 mA 工作温度范围:- 40 C to +85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
| LOG112AID | 制造商:Texas Instruments 功能描述:IC AMP LOG SMD SOIC14 112 |
| LOG112AIDE4 | 功能描述:对数放大器 Precision Log & Log Ratio Amp RoHS:否 制造商:Texas Instruments 通道数量:3 带宽:3 dB 共模抑制比（最小值）: 输入补偿电压:+/- 7 mV 输入电压范围（最大值）:5.5 V 工作电源电压:4.5 V to 5.5 V 电源电流:+/- 15 mA 工作温度范围:- 40 C to +85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
| LOG112AIDR | 功能描述:对数放大器 Precision Log & Log Ratio Amp RoHS:否 制造商:Texas Instruments 通道数量:3 带宽:3 dB 共模抑制比（最小值）: 输入补偿电压:+/- 7 mV 输入电压范围（最大值）:5.5 V 工作电源电压:4.5 V to 5.5 V 电源电流:+/- 15 mA 工作温度范围:- 40 C to +85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
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