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參數(shù)資料
| 型號： | LOG104AIDR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOGARITHMIC AND LOG RATIO AMPLIFIER |
| 中文描述： | 對數(shù)和對數(shù)比率放大器 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 273K |
| 代理商： | LOG104AIDR |
FEATURES
G
EASY-TO-USE COMPLETE CORE FUNCTION
G
HIGH ACCURACY: 0.01% FSO Over 5 Decades
G
WIDE INPUT DYNAMIC RANGE:
7.5 Decades, 100pA to 3.5mA
G
LOW QUIESCENT CURRENT: 1mA
G
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 V
OUT
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
G
LOG, LOG RATIO COMPUTATION:
Communication, Analytical, Medical, Industrial,
Test, General Instrumentation
G
PHOTODIODE SIGNAL COMPRESSION AMP
G
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 2002-2004, Texas Instruments Incorporated
SBOS243B – MAY 2002 – REVISED JUNE 2004
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.
LOG104
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
C
I
2
I
1
R
1
R
2
V
–
V
OUT
V+
GND
LOG104
V
OUT
= 0.5 LOG (I
1
/I
2
)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LOG104AIDRE4 | 功能描述:對數(shù)放大器 LOGARITHMIC AMP RoHS:否 制造商:Texas Instruments 通道數(shù)量:3 帶寬:3 dB 共模抑制比（最小值）: 輸入補(bǔ)償電壓:+/- 7 mV 輸入電壓范圍（最大值）:5.5 V 工作電源電壓:4.5 V to 5.5 V 電源電流:+/- 15 mA 工作溫度范圍:- 40 C to +85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| LOG112 | 制造商:BB 制造商全稱:BB 功能描述:Precision, High-Speed Transimpedance Amplifier |
| LOG112AID | 功能描述:對數(shù)放大器 Precision Log & Log Ratio Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:3 帶寬:3 dB 共模抑制比（最小值）: 輸入補(bǔ)償電壓:+/- 7 mV 輸入電壓范圍（最大值）:5.5 V 工作電源電壓:4.5 V to 5.5 V 電源電流:+/- 15 mA 工作溫度范圍:- 40 C to +85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
| LOG112AID | 制造商:Texas Instruments 功能描述:IC AMP LOG SMD SOIC14 112 |
| LOG112AIDE4 | 功能描述:對數(shù)放大器 Precision Log & Log Ratio Amp RoHS:否 制造商:Texas Instruments 通道數(shù)量:3 帶寬:3 dB 共模抑制比（最小值）: 輸入補(bǔ)償電壓:+/- 7 mV 輸入電壓范圍（最大值）:5.5 V 工作電源電壓:4.5 V to 5.5 V 電源電流:+/- 15 mA 工作溫度范圍:- 40 C to +85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-16 封裝:Reel |
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