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AD820ARZ

更新时间： 2024-11-05 04:30:59
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
24页 586K
描述
Single-Supply, Rail-to-Rail, Low Power FET-Input Op Amp

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AD820ARZ 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 36 V  
Dual-supply capability from 2.5 V to 18 V  
Excellent load drive  
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 3.0 V/μs  
NULL  
–IN  
1
2
3
4
8
7
6
5
NC  
+V  
AD820  
S
+IN  
V
OUT  
TOP VIEW  
(Not to Scale)  
–V  
NULL  
S
NC = NO CONNECT  
Figure 1. 8-Lead PDIP  
NC  
–IN  
+IN  
1
2
3
4
8
7
6
5
NC  
AD820  
Excellent dc performance  
+V  
S
800 μV maximum input offset voltage  
1 μV/°C typical offset voltage drift  
25 pA maximum input bias current  
Low noise  
V
OUT  
TOP VIEW  
(Not to Scale)  
–V  
NC  
S
NC = NO CONNECT  
13 nV/√Hz @ 10 kHz  
Figure 2. 8-Lead SOIC  
APPLICATIONS  
Battery-powered precision instrumentation  
Photodiode preamps  
Active filters  
12- 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 5.0 V to 36 V, or dual supplies  
of ±2.5 V to ±±8 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  
±0 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 two 8-lead package  
options: plastic DIP (PDIP) and surface mount (SOIC).  
20µs  
1V  
1V  
100  
90  
Offset voltage of 800 μV maximum, offset voltage drift of  
± μV/°C, typical input bias currents below 25 pA, and low input  
voltage noise provide dc precision with source impedances up  
to ± GΩ. ±.8 MHz unity gain bandwidth, −93 dB THD at  
±0 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  
±5 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. E  
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 from its 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 and registeredtrademarks arethe 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 ©1996–2007 Analog Devices, Inc. All rights reserved.  
 
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AD820ARZ 替代型号

型号 品牌 替代类型 描述 数据表
AD820BRZ ADI

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 Single-Supply, Rail-to-Rail, Low Power FET-Input Op Amp
OP177FSZ ADI

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AD820AR ADI

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 Single Supply, Rail to Rail Low Power FET-Input Op Amp

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