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AD745

更新时间： 2024-11-22 22:49:59
品牌 Logo 应用领域
亚德诺 - ADI 运算放大器
页数 文件大小 规格书
12页 339K
描述
Ultralow Noise, High Speed, BiFET Op Amp

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中文翻译

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AD745 数据手册

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Ultralow Noise,  
High Speed, BiFET Op Amp  
a
AD745  
FEATURES  
ULTRALOW NOISE PERFORMANCE  
2.9 nV/ͱHz at 10 kHz  
CONNECTION DIAGRAM  
16-Lead SOIC (R) Package  
0.38 ꢀV p-p, 0.1 Hz to 10 Hz  
6.9 fA/ͱHz Current Noise at 1 kHz  
EXCELLENT AC PERFORMANCE  
12.5 V/ꢀs Slew Rate  
20 MHz Gain Bandwidth Product  
THD = 0.0002% @ 1 kHz  
Internally Compensated for Gains of +5 (or –4) or  
Greater  
EXCELLENT DC PERFORMANCE  
0.5 mV Max Offset Voltage  
250 pA Max Input Bias Current  
2000 V/mV Min Open Loop Gain  
Available in Tape and Reel in Accordance with  
EIA-481A Standard  
APPLICATIONS  
Sonar  
Photodiode and IR Detector Amplifiers  
Accelerometers  
amplifier for high-speed applications demanding low noise and  
high dc precision. Furthermore, the AD745 does not exhibit an  
output phase reversal.  
The AD745 also has excellent dc performance with 250 pA  
maximum input bias current and 0.5 mV maximum offset voltage.  
Low Noise Preamplifiers  
High Performance Audio  
The internal compensation of the AD745 is optimized for higher  
gains, providing a much higher bandwidth and a faster slew  
rate. This makes the AD745 especially useful as a preamplifier  
where low level signals require an amplifier that provides both  
high amplification and wide bandwidth at these higher gains.  
The AD745 is available in two performance grades. The AD745J  
and AD745K are rated over the commercial temperature range  
of 0°C to 70°C, and are available in the 16-lead SOIC package.  
PRODUCT DESCRIPTION  
The AD745 is an ultralow noise, high-speed, FET input opera-  
tional amplifier. It offers both the ultralow voltage noise and  
high speed generally associated with bipolar input op amps and  
the very low input currents of FET input devices. Its 20 MHz  
bandwidth and 12.5 V/µs slew rate makes the AD745 an ideal  
120  
100  
80  
120  
100  
80  
1000  
R
SOURCE  
OP37 AND  
RESISTOR  
E
PHASE  
GAIN  
O
R
SOURCE  
100  
10  
1
60  
60  
AD745 AND RESISTOR  
OR  
OP37 AND RESISTOR  
AD745 AND  
RESISTOR  
40  
40  
20  
20  
0
0
RESISTOR NOISE ONLY  
1k 10k  
–20  
100M  
–20  
100  
100  
100k  
1M  
10M  
1k  
10k  
100k  
1M  
10M  
SOURCE RESISTANCE – ꢁ  
FREQUENCY – Hz  
Figure 1.  
Figure 2.  
REV. D  
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.  
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  
© Analog Devices, Inc., 2002  
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