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ADR445

更新时间： 2024-01-07 08:01:50
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
20页 532K
描述
2.048 V High Precision, LDO XFET® References for High Performance Sigma-Delta and PulSAR® Converters

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ADR445 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP,针数：8
Reach Compliance Code：unknown风险等级：5.77
Is Samacsys：N其他特性：OUTPUT VOLTAGE CAN BE ADJUSTED OVER A 0.5 PERCENT RANGE USING TRIM PIN
模拟集成电路 - 其他类型：THREE TERMINAL VOLTAGE REFERENCEJESD-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
输出次数：1端子数量：8
最高工作温度：125 °C最低工作温度：-40 °C
最大输出电压：5.006 V最小输出电压：4.994 V
标称输出电压：5 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
座面最大高度：1.75 mm最大供电电压 (Vsup)：18 V
最小供电电压 (Vsup)：5.5 V标称供电电压 (Vsup)：6.5 V
表面贴装：YES最大电压温度系数：10 ppm/ °C
温度等级：AUTOMOTIVE端子面层：MATTE TIN
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：40
微调/可调输出：YES宽度：3.9 mm
Base Number Matches：1

ADR445 数据手册

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Ultralow Noise, LDO XFET® Voltage  
References with Current Sink and Source  
ADR440/ADR441/ADR443/ADR444/ADR445  
FEATURES  
PIN CONFIGURATIONS  
Ultralow noise (0.1 Hz to 10 Hz)  
ADR440: 1 μV p-p  
ADR441: 1.2 μV p-p  
TP  
1
2
3
4
8
7
6
5
TP  
ADR44x  
V
NC  
IN  
TOP VIEW  
NC  
V
OUT  
(Not to Scale)  
GND  
TRIM  
ADR443: 1.4 μV p-p  
ADR444: 1.8 μV p-p  
NC = NO CONNECT  
ADR445: 2.25 μV p-p  
Figure 1. 8-Lead SOIC (R)  
Superb temperature coefficient:  
3 ppm/°C (B Grade)  
10 ppm/°C (A Grade)  
Low dropout operation: 500 mV  
Input range: (VOUT + 500 mV) to 18 V  
High output current: +10 mA/−5 mA  
Wide temperature range: −40°C to +125°C  
TP  
1
2
3
4
8
7
6
5
TP  
NC  
V
ADR44x  
V
IN  
NC  
TOP VIEW  
(Not to Scale)  
OUT  
GND  
TRIM  
NC = NO CONNECT  
Figure 2. 8-Lead MSOP (RM)  
APPLICATIONS  
Precision data acquisition systems  
High resolution data converters  
Battery-powered instrumentations  
Portable medical instruments  
Industrial process control systems  
Precision instruments  
Optical control circuits  
GENERAL DESCRIPTION  
Offered in two electrical grades, the ADR44x family is avail-  
able in the 8-lead SOIC and MSOP packages. All versions  
are specified over the extended industrial temperature range  
(−40oC to +125oC).  
The ADR44x series is a family of XFET® voltage references  
featuring ultralow noise, high accuracy, and low temperature  
drift performance. Using ADI’s patented temperature drift  
curvature correction and XFET (eXtra implanted junction FET)  
technology, the ADR44x family’s voltage change vs. temperature  
nonlinearity is greatly minimized.  
Table 1. Selection Guide  
Temperature  
VOUT (V) Accuracy (mV) Coefficient (ppm/°C)  
Model  
ADR440B 2.048  
ADR440A 2.048  
ADR44±B 2.500  
ADR44±A 2.500  
ADR443B 3.000  
ADR443A 3.000  
ADR444B 4.096  
ADR444A 4.096  
ADR445B 5.000  
ADR445A 5.000  
±±  
±3  
±±  
±3  
±±.2  
±4  
±±.6  
±5  
±2  
±6  
3
±0  
3
±0  
3
±0  
3
±0  
3
±0  
The XFET references offer better noise performance than  
buried-Zener references, and XFET references operate off  
low supply headroom (0.5 V). This combination of features  
makes the ADR44x family ideally suited for precision signal  
conversion applications in high-end data acquisition systems,  
optical networks, and medical requirements.  
The ADR44x family has the capability to source up to 10 mA  
and sink up to 5 mA of output current. It also comes with a  
TRIM terminal to adjust the output voltage over a 0.5% range  
without compromising any performance.  
Rev. 0  
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  
Fax: 781.461.3113  
www.analog.com  
© 2005 Analog Devices, Inc. All rights reserved.  
 
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