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AD8221-EVAL PDF预览

AD8221-EVAL

更新时间: 2024-01-04 04:52:01
品牌 Logo 应用领域
亚德诺 - ADI 仪表放大器
页数 文件大小 规格书
20页 1116K
描述
Precision Instrumentation Amplifier

AD8221-EVAL 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Active包装说明:TSSOP,
针数:8Reach Compliance Code:compliant
风险等级:2.14放大器类型:INSTRUMENTATION AMPLIFIER
最大平均偏置电流 (IIB):0.00375 µA标称带宽 (3dB):0.825 MHz
最小共模抑制比:80 dB最大输入失调电流 (IIO):0.00225 µA
最大输入失调电压:150 µVJESD-30 代码:S-PDSO-G8
JESD-609代码:e4长度:3 mm
湿度敏感等级:1负供电电压上限:-18 V
标称负供电电压 (Vsup):-15 V最大非线性:0.005%
功能数量:1端子数量:8
最高工作温度:125 °C最低工作温度:-55 °C
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260座面最大高度:1.1 mm
标称压摆率:2.5 V/us子类别:Instrumentation Amplifier
供电电压上限:18 V标称供电电压 (Vsup):15 V
表面贴装:YES温度等级:MILITARY
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30最大电压增益:1000
最小电压增益:1宽度:3 mm
Base Number Matches:1

AD8221-EVAL 数据手册

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Precision Instrumentation Amplifier  
AD8221  
CONNECTION DIAGRAM  
FEATURES  
Available in space-saving MSOP package  
Gain set with 1 external resistor (gain range 1 to 1000)  
Wide power supply range: ±2.3 V to ±18 V  
Temperature range for specified performance:  
–40°C to +85°C  
1
2
3
4
8
7
6
5
+V  
–IN  
S
R
R
V
OUT  
G
G
REF  
–V  
+IN  
S
AD8221  
TOP VIEW  
Operational up to 125°C1  
EXCELLENT AC SPECIFICATONS  
80 dB min CMRR to 10 kHz ( G = 1)  
825 kHz –3 dB bandwidth (G = 1)  
2 V/µs slew rate  
Figure 1. SOIC and MSOP Connection Diagram  
LOW NOISE  
120  
110  
100  
90  
8 nV/√Hz, @ 1 kHz, max input voltage noise  
0.25 µV p-p input noise (0.1 Hz to 10 Hz)  
HIGH ACCURACY DC PERFORMANCE (AD8221BR)  
90 dB min CMRR (G = 1)  
25 µV max input offset voltage  
0.3 µV/°C max input offset drift  
0.4 nA max input bias current  
AD8221  
COMPETITOR 1  
80  
70  
APPLICATIONS  
Weigh scales  
60  
COMPETITOR 2  
Industrial process controls  
Bridge amplifiers  
50  
40  
Precision data acquisition systems  
Medical instrumentation  
Strain gages  
10  
100  
1k  
10k  
100k  
FREQUENCY (Hz)  
Figure 2. Typical CMRR vs. Frequency for G = 1  
Transducer interfaces  
GENERAL DESCRIPTION  
Programmable gain affords the user design flexibility. A single  
resistor sets the gain from 1 to 1000. The AD8221 operates on  
both single and dual supplies, and is well suited for applications  
where 10 V input voltages are encountered.  
The AD8221 is a gain programmable, high performance instru-  
mentation amplifier that delivers the industrys highest CMRR  
over frequency. The CMRR of instrumentation amplifiers on  
the market today falls off at 200 Hz. In contrast, the AD8221  
maintains a minimum CMRR of 80 dB to 10 kHz for all grades  
at G = 1. High CMRR over frequency allows the AD8221 to  
reject wideband interference and line harmonics, greatly  
simplifying filter requirements. Possible applications include  
precision data acquisition, biomedical analysis, and aerospace  
instrumentation.  
The AD8221 is available in low cost 8-lead SOIC and MSOP  
packages, both of which offer the industrys best performance.  
The MSOP requires half the board space of the SOIC, making it  
ideal for multichannel or space-constrained applications.  
Performance is specified over the entire industrial temperature  
range of –40°C to +85°C for all grades. Furthermore, the  
AD8221 is operational from –40°C to +125°C1.  
Low voltage offset, low offset drift, low gain drift, high gain  
accuracy, and high CMRR make this part an excellent choice in  
applications that demand the best dc performance possible,  
such as bridge signal conditioning.  
1 See Typical Performance Curves for expected operation from 85°C to 125°C.  
Rev. A  
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  
registered trademarks 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  
Fax: 781.326.8703  
www.analog.com  
© 2003 Analog Devices, Inc. All rights reserved.  
 

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