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AD743AN

更新时间： 2024-11-24 12:54:31
品牌 Logo 应用领域
亚德诺 - ADI 运算放大器放大器电路光电二极管
页数 文件大小 规格书
12页 230K
描述
Ultralow Noise BiFET Op Amp

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中文翻译

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AD743AN 数据手册

 浏览型号AD743AN的Datasheet PDF文件第2页浏览型号AD743AN的Datasheet PDF文件第3页浏览型号AD743AN的Datasheet PDF文件第4页浏览型号AD743AN的Datasheet PDF文件第5页浏览型号AD743AN的Datasheet PDF文件第6页浏览型号AD743AN的Datasheet PDF文件第7页 
Ultralow Noise  
BiFET Op Amp  
AD743  
FEATURES  
Ultralow Noise Performance  
CONNECTION DIAGRAMS  
8-Lead PDIP (N)  
16-Lead SOIC (R)  
2.9 nV/  
0.38 ␮V p-p, 0.1 Hz to 10 Hz  
6.9 fA/ Hz Current Noise at 1 kHz  
√Hz at 10 kHz  
1
2
3
4
NULL  
–IN  
NC  
16  
1
2
3
4
8
NC  
NC  
NC  
+V  
√
AD743  
OFFSET  
NULL  
AD743  
15  
14  
7
6
5
S
Excellent DC Performance  
–IN  
NC  
+IN  
+IN  
0.5 mV Max Offset Voltage  
250 pA Max Input Bias Current  
1000 V/mV Min Open-Loop Gain  
NC  
+V  
OUT  
–V  
S
13  
12  
S
NULL  
TOP VIEW  
OUTPUT  
5
6
NC = NO CONNECT  
AC Performance  
2.8 V/␮s Slew Rate  
4.5 MHz Unity-Gain Bandwidth  
THD = 0.0003% @ 1 kHz  
Available in Tape and Reel in Accordance with  
EIA-481A Standard  
OFFSET  
NULL  
–V  
S
11  
10  
9
NC  
NC  
7
8
NC  
NC  
NC = NO CONNECT  
APPLICATIONS  
Sonar Preamplifiers  
High Dynamic Range Filters (>140 dB)  
Photodiode and IR Detector Amplifiers  
Accelerometers  
2. The combination of low voltage and low current noise make  
the AD743 ideal for charge sensitive applications such as  
accelerometers and hydrophones.  
3. The low input offset voltage and low noise level of the AD743  
provide >140 dB dynamic range.  
4. The typical 10 kHz noise level of 2.9 nV/√Hz permits a three  
op amp instrumentation amplifier, using three AD743s, to be  
built which exhibits less than 4.2 nV/√Hz noise at 10 kHz  
and which has low input bias currents.  
GENERAL DESCRIPTION  
The AD743 is an ultralow noise, precision, FET input, monolithic  
operational amplifier. It offers a combination of the ultralow volt-  
age noise generally associated with bipolar input op amps and  
the very low input current of a FET input device. Furthermore,  
the AD743 does not exhibit an output phase reversal when the  
negative common-mode voltage limit is exceeded.  
1000  
R
OP27 AND  
RESISTOR  
( — )  
SOURCE  
The AD743’s guaranteed, maximum input voltage noise of  
4.0 nV/√Hz at 10 kHz is unsurpassed for a FET input mono-  
lithic op amp, as is the maximum 1.0 µV p-p, 0.1 Hz to 10 Hz  
noise. The AD743 also has excellent dc performance with 250 pA  
maximum input bias current and 0.5 mV maximum offset voltage.  
E
O
R
SOURCE  
100  
AD743 AND RESISTOR  
OR  
OP27 AND RESISTOR  
The AD743 is specifically designed for use as a preamp in capaci-  
tive sensors, such as ceramic hydrophones. The AD743J is rated  
over the commercial temperature range of 0°C to 70°C.  
AD743 AND  
RESISTOR  
(
)
10  
The AD743 is available in a 16-lead SOIC and 8-lead PDIP.  
PRODUCT HIGHLIGHTS  
RESISTOR NOISE ONLY  
(– – –)  
1. The low offset voltage and low input offset voltage drift of the  
AD743 coupled with its ultralow noise performance mean  
that the AD743 can be used for upgrading many applications  
now using bipolar amplifiers.  
1
100  
1k  
10k  
100k  
1M  
10M  
SOURCE RESISTANCE (⍀)  
Figure 1. Input Voltage Noise vs. Source Resistance  
REV. E  
Information furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assumed by Analog Devices for its  
use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat  
may result from its use. No license is granted by implication or otherwise  
under any patent or patent rights of Analog Devices. Trademarks and  
registered trademarks are the property of their respective companies.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781/329-4700  
Fax: 781/326-8703  
www.analog.com  
© 2003 Analog Devices, Inc. All rights reserved.  
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