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AD737JRZ-5 PDF预览

AD737JRZ-5

更新时间: 2024-01-26 20:22:40
品牌 Logo 应用领域
亚德诺 - ADI 转换器模拟特殊功能转换器光电二极管PC
页数 文件大小 规格书
24页 499K
描述
Low Cost, Low Power, True RMS-to-DC Converter

AD737JRZ-5 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:8542.39.00.01风险等级:5
转换器类型:RMS TO DC CONVERTERJESD-30 代码:R-PDSO-G8
JESD-609代码:e3长度:4.9 mm
湿度敏感等级:1最大负电源电压:-16.5 V
最小负电源电压:-2.5 V标称负供电电压:-5 V
功能数量:1端子数量:8
最大工作频率:0.005 MHz最高工作温度:70 °C
最低工作温度: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:+-5 V
认证状态:Not Qualified座面最大高度:1.75 mm
子类别:Analog Special Function Converters最大压摆率:0.21 mA
最大供电电压:16.5 V最小供电电压:2.5 V
标称供电电压:5 V表面贴装:YES
技术:BIPOLAR温度等级:COMMERCIAL
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

AD737JRZ-5 数据手册

 浏览型号AD737JRZ-5的Datasheet PDF文件第2页浏览型号AD737JRZ-5的Datasheet PDF文件第3页浏览型号AD737JRZ-5的Datasheet PDF文件第4页浏览型号AD737JRZ-5的Datasheet PDF文件第5页浏览型号AD737JRZ-5的Datasheet PDF文件第6页浏览型号AD737JRZ-5的Datasheet PDF文件第7页 
Low Cost, Low Power,  
True RMS-to-DC Converter  
Data Sheet  
AD737  
FEATURES  
Computes  
FUNCTIONAL BLOCK DIAGRAM  
COM  
8kΩ  
8kΩ  
C
True rms value  
C
C
F
Average rectified value  
Absolute value  
Provides  
ABSOLUTE  
VALUE  
CIRCUIT  
OUTPUT  
SQUARER  
DIVIDER  
V
IN  
200 mV full-scale input range (larger inputs with  
input scaling)  
C
AV  
+V  
C
S
AV  
BIAS  
SECTION  
Direct interfacing with 3½ digit CMOS ADCs  
POWER  
DOWN  
–V  
S
High input impedance: 1012  
Low input bias current: 25 pA maximum  
High accuracy: 0.2 mV 0.3% of reading  
Figure 1.  
RMS conversion with signal crest factors up to 5  
Wide power supply range: 2.5 V to 16.5 V  
Low power: 25 µA (typical) standby current  
No external trims needed for specified accuracy  
The AD737 output is negative-going; the AD736 is a positive  
output-going version of the same basic device  
GENERAL DESCRIPTION  
The AD737 is a low power, precision, monolithic, true rms-to-  
dc converter. It is laser trimmed to provide a maximum error of  
0.2 mV 0.3% of reading with sine wave inputs. Furthermore,  
it maintains high accuracy while measuring a wide range of  
input waveforms, including variable duty cycle pulses and  
triac (phase) controlled sine waves. The low cost and small  
physical size of this converter make it suitable for upgrading  
the performance of non-rms precision rectifiers in many  
applications. Compared to these circuits, the AD737 offers  
higher accuracy at equal or lower cost.  
The AD737 has both high (1012 Ω) and low impedance input  
options. The high-Z FET input connects high source impedance  
input attenuators, and a low impedance (8 kΩ) input accepts  
rms voltages to 0.9 V while operating from the minimum power  
supply voltage of 2.5 V. The two inputs can be used either  
single ended or differentially.  
The AD737 achieves 1% of reading error bandwidth, exceeding  
10 kHz for input amplitudes from 20 mV rms to 200 mV rms,  
while consuming only 0.72 mW.  
The AD737 is available in two performance grades. The AD737J  
and AD737K grades operate over the commercial temperature  
range of 0°C to 70°C. The AD737JR-5 is tested with supply  
voltages of 2.5 V dc. The AD737A grade operates over the  
industrial temperature range of −40°C to +85°C. The AD737 is  
available in two low cost, 8­lead packages: PDIP and SOIC_N.  
The AD737 can compute the rms value of both ac and dc input  
voltages. It can also be operated ac-coupled by adding one  
external capacitor. In this mode, the AD737 can resolve input  
signal levels of 100 µV rms or less, despite variations in tem-  
perature or supply voltage. High accuracy is also maintained for  
input waveforms with crest factors of 1 to 3. In addition, crest  
factors as high as 5 can be measured (while introducing only  
2.5% additional error) at the 200 mV full-scale input level.  
PRODUCT HIGHLIGHTS  
1. Computes average rectified, absolute, or true rms value of a  
signal regardless of waveform.  
2. Only one external component, an averaging capacitor, is  
required for the AD737 to perform true rms measurement.  
3. The standby power consumption of 125 μW makes the  
AD737 suitable for battery-powered applications.  
The AD737 has no output buffer amplifier, thereby significantly  
reducing dc offset errors occurring at the output, which makes  
the device highly compatible with high input impedance ADCs.  
Requiring only 160 µA of power supply current, the AD737 is  
optimized for use in portable multimeters and other battery-  
powered applications. In power-down mode, the standby supply  
current in is typically 25 µA.  
Rev. I  
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  
rightsof 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  
Fax: 781.461.3113  
www.analog.com  
©2012 Analog Devices, Inc. All rights reserved.  
 
 
 
 

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