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AD8557ARZ-REEL7

更新时间： 2024-01-26 10:19:01
品牌 Logo 应用领域
亚德诺 - ADI 传感器放大器
页数 文件大小 规格书
24页 508K
描述
Digitally Programmable Sensor Signal Amplifier

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AD8557ARZ-REEL7 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP, SOP8,.25针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.31.00.01风险等级：0.66
模拟集成电路 - 其他类型：ANALOG CIRCUITJESD-30 代码：R-PDSO-G8
JESD-609代码：e3长度：4.9 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：125 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260电源：2.7/5 V
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Other Analog ICs最大供电电压 (Vsup)：5.5 V
最小供电电压 (Vsup)：2.7 V标称供电电压 (Vsup)：5 V
表面贴装：YES温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3.9 mm
Base Number Matches：1

AD8557ARZ-REEL7 数据手册

 浏览型号AD8557ARZ-REEL7的Datasheet PDF文件第2页浏览型号AD8557ARZ-REEL7的Datasheet PDF文件第3页浏览型号AD8557ARZ-REEL7的Datasheet PDF文件第4页浏览型号AD8557ARZ-REEL7的Datasheet PDF文件第5页浏览型号AD8557ARZ-REEL7的Datasheet PDF文件第6页浏览型号AD8557ARZ-REEL7的Datasheet PDF文件第7页 
Digitally Programmable  
Sensor Signal Amplifier  
AD8557  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
VDD  
Very low offset voltage: 12 μV maximum over temperature  
Very low input offset voltage drift: 65 nV/°C maximum  
High CMRR: 96 dB minimum  
Digitally programmable gain and output offset voltage  
Gain range from 28 to 1300  
Qualified for automotive applications  
Single-wire serial interface  
Stable with any capacitive load  
VCLAMP  
VDD  
A4  
P3  
VNEG  
R4  
R1  
R6  
A1  
VSS  
VDD  
A3  
VSS  
P1  
R3  
P2  
R2  
VOUT  
SOIC_N and LFCSP_VQ packages  
2.7 V to 5.5 V operation  
VDD  
A2  
VSS  
R7  
R5  
APPLICATIONS  
VPOS  
P4  
VDD  
DIGIN  
VSS  
Automotive sensors  
VSS  
Pressure and position sensors  
Precision current sensing  
Thermocouple amplifiers  
Industrial weigh scales  
Strain gages  
Figure 1.  
GENERAL DESCRIPTION  
The AD8557 is a zero drift, sensor signal amplifier with digitally  
programmable gain and output offset. Designed to easily and  
accurately convert variable pressure sensor and strain bridge  
outputs to a well-defined output voltage range, the AD8557  
accurately amplifies many other differential or single-ended  
sensor outputs. The AD8557 uses the Analog Devices, Inc.  
patented low noise auto-zero and DigiTrim® technologies to  
create an accurate and flexible signal processing solution in a  
compact footprint.  
also includes a pull-up current source at the input pins and a  
pull-down current source at the VCLAMP pin. Output  
clamping set via an external reference voltage allows the  
AD8557 to drive lower voltage ADCs safely and accurately.  
When used in conjunction with an ADC referenced to the same  
supply, the system accuracy becomes immune to normal supply  
voltage variations. Output offset voltage can be adjusted with a  
resolution of better than 0.4% of the difference between VDD  
and VSS. A lockout trim after gain and offset adjustment  
further ensures field reliability.  
Gain is digitally programmable in a wide range from 28 to 1300  
through a serial data interface. Gain adjustment can be fully  
simulated in circuit and then permanently programmed with  
reliable polyfuse technology. Output offset voltage is also  
digitally programmable and is ratiometric to the supply voltage.  
The AD8557 is fully specified from −40°C to +125°C.  
Operating from single-supply voltages of 2.7 V to 5.5 V, the  
AD8557 is offered in an 8-lead SOIC_N, and a 4 mm × 4 mm,  
16-lead LFCSP_VQ.  
In addition to extremely low input offset voltage and input  
offset voltage drift and very high dc and ac CMRR, the AD8557  
Rev. C  
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 ©2007–2011 Analog Devices, Inc. All rights reserved.  
 
 
 
 
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