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AD820SQ/883B PDF预览

AD820SQ/883B

更新时间： 2024-09-15 20:02:43
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
24页 373K
描述
IC OP-AMP, 1000 uV OFFSET-MAX, 2 MHz BAND WIDTH, CDIP8, HERMETIC SEALED, CERDIP-8, Operational Amplifier

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AD820SQ/883B 数据手册

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Single-Supply, Rail-to-Rail,  
Low Power, FET Input Op Amp  
AD820  
FEATURES  
PIN CONFIGURATIONS  
True single-supply operation  
Output swings rail-to-rail  
Input voltage range extends below ground  
Single-supply capability from 5 V to 30 V  
Dual-supply capability from 2.5 V to 15 V  
Excellent load drive  
NULL  
–IN  
1
2
3
4
8
7
6
5
NC  
AD820  
+V  
S
+IN  
V
OUT  
TOP VIEW  
(Not to Scale)  
–V  
NULL  
S
NC = NO CONNECT  
Capacitive load drive up to 350 pF  
Minimum output current of 15 mA  
Excellent ac performance for low power  
800 μA maximum quiescent current  
Unity-gain bandwidth: 1.8 MHz  
Slew rate of 3 V/μs  
Figure 1. 8-Lead PDIP  
NC  
–IN  
+IN  
1
2
3
4
8
7
6
5
NC  
AD820  
+V  
S
V
OUT  
TOP VIEW  
–V  
NC  
S
Excellent dc performance  
(Not to Scale)  
800 μV maximum input offset voltage  
2 μV/°C typical offset voltage drift  
25 pA maximum input bias current  
Low noise: 13 nV/√Hz @ 10 kHz  
NC = NO CONNECT  
Figure 2. 8-Lead SOIC_N and 8-Lead MSOP  
APPLICATIONS  
Battery-powered precision instrumentation  
Photodiode preamps  
Active filters  
12-bit to 14-bit data acquisition systems  
Medical instrumentation  
Low power references and regulators  
GENERAL DESCRIPTION  
The AD820 is a precision, low power FET input op amp that  
can operate from a single supply of 5 V to 36 V, or dual supplies  
of 2.5 V to 18 V. It has true single-supply capability, with an  
input voltage range extending below the negative rail, allowing  
the AD820 to accommodate input signals below ground in the  
single-supply mode. Output voltage swing extends to within  
10 mV of each rail, providing the maximum output dynamic range.  
The AD820 is available in two performance grades. The A and  
B grades are rated over the industrial temperature range of  
−40°C to +85°C. The AD820 is offered in three 8-lead package  
options: plastic DIP (PDIP), surface mount (SOIC) and (MSOP).  
20µs  
1V  
1V  
100  
90  
Offset voltage of 800 μV maximum, offset voltage drift of  
2 μV/°C, typical input bias currents below 25 pA, and low input  
voltage noise provide dc precision with source impedances up  
to 1 GΩ. 1.8 MHz unity gain bandwidth, −93 dB THD at  
10 kHz, and 3 V/μs slew rate are provided for a low supply  
current of 800 μA. The AD820 drives up to 350 pF of direct  
capacitive load and provides a minimum output current of  
15 mA. This allows the amplifier to handle a wide range of load  
conditions. This combination of ac and dc performance, plus  
the outstanding load drive capability, results in an exceptionally  
versatile amplifier for the single-supply user.  
10  
0%  
1V  
Figure 3. Gain-of-2 Amplifier; VS = 5 V, 0 V, VIN = 2.5 V Sine Centered at 1.25 V  
Rev. H  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result fromits use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks andregisteredtrademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
www.analog.com  
Fax: 781.461.3113 ©1996–2011 Analog Devices, Inc. All rights reserved.  
 
 
 
 
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