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AD736 PDF预览

AD736

更新时间: 2024-01-30 04:09:59
品牌 Logo 应用领域
亚德诺 - ADI 转换器
页数 文件大小 规格书
8页 220K
描述
Low Cost, Low Power, True RMS-to-DC Converter

AD736 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Not Recommended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:5.07
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
最大线性误差 (EL):0.35%湿度敏感等级:1
最大负电源电压:-16.5 V最小负电源电压:-3.2 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
最大正输入电压:1 V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:0.27 mA
最大供电电压:16.5 V最小供电电压:2.8 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最大总误差:2%
宽度:3.9 mmBase Number Matches:1

AD736 数据手册

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Low Cost, Low Power,  
True RMS-to-DC Converter  
a
AD736  
FUNCTIO NAL BLO CK D IAGRAM  
FEATURES  
COMPUTES  
True RMS Value  
Average Rectified Value  
Absolute Value  
PROVIDES  
200 m V Full-Scale Input Range  
(Larger Inputs w ith Input Attenuator)  
High Input Im pedance of 1012  
Low Input Bias Current: 25 pA m ax  
High Accuracy: ؎0.3 m V ؎0.3% of Reading  
RMS Conversion w ith Signal Crest Factors Up to 5  
Wide Pow er Supply Range: +2.8 V, –3.2 V to ؎16.5 V  
Low Pow er: 200 A m ax Supply Current  
Buffered Voltage Output  
No External Trim s Needed for Specified Accuracy  
AD737—An Unbuffered Voltage Output Version w ith  
Chip Pow er Dow n Is Also Available  
which allows the measurement of 300 mV input levels, while  
operating from the minimum power supply voltage of +2.8 V,  
–3.2 V. The two inputs may be used either singly or differentially.  
T he AD736 achieves a 1% of reading error bandwidth exceeding  
10 kHz for input amplitudes from 20 mV rms to 200 mV rms  
while consuming only 1 mW.  
P RO D UCT D ESCRIP TIO N  
T he AD736 is a low power, precision, monolithic true  
rms-to-dc converter. It is laser trimmed to provide a maximum  
error of ±0.3 mV ±0.3% of reading with sine-wave inputs. Fur-  
thermore, it maintains high accuracy while measuring a wide  
range of input waveforms, including variable duty cycle pulses  
and triac (phase) controlled sine waves. T he low cost and small  
physical size of this converter make it suitable for upgrading the  
performance of non-rms “precision rectifiers” in many applica-  
tions. Compared to these circuits, the AD736 offers higher ac-  
curacy at equal or lower cost.  
T he AD736 is available in four performance grades. T he  
AD736J and AD736K grades are rated over the commercial tem-  
perature range of 0°C to +70°C. T he AD736A and AD736B  
grades are rated over the industrial temperature range of –40°C  
to +85°C.  
T he AD736 is available in three low-cost, 8-pin packages: plastic  
mini-DIP, plastic SO and hermetic cerdip.  
T he AD736 can compute the rms value of both ac and dc input  
voltages. It can also be operated ac coupled by adding one ex-  
ternal capacitor. In this mode, the AD736 can resolve input sig-  
nal levels of 100 µV rms or less, despite variations in  
temperature 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.  
P RO D UCT H IGH LIGH TS  
1. T he AD736 is capable of computing the average rectified  
value, absolute value or true rms value of various input  
signals.  
2. Only one external component, an averaging capacitor, is  
required for the AD736 to perform true rms measurement.  
3. T he low power consumption of 1 mW makes the AD736  
suitable for many battery powered applications.  
4. A high input impedance of 1012  
T he AD736 has its own output buffer amplifier, thereby provid-  
ing a great deal of design flexibility. Requiring only 200 µA of  
power supply current, the AD736 is optimized for use in por-  
table multimeters and other battery powered applications.  
eliminates the need for an  
external buffer when interfacing with input attenuators.  
5. A low impedance input is available for those applications  
requiring up to 300 mV rms input signal operating from low  
power supply voltages.  
T he AD736 allows the choice of two signal input terminals: a  
high impedance (1012 ) FET input which will directly interface  
with high Z input attenuators and a low impedance (8 k) input  
REV. C  
Inform ation furnished by Analog Devices is believed to be accurate and  
reliable. However, no responsibility is assum ed by Analog Devices for its  
use, nor for any infringem ents of patents or other rights of third parties  
which m ay result from its use. No license is granted by im plication or  
otherwise under any patent or patent rights of Analog Devices.  
One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.  
Tel: 617/ 329-4700  
Fax: 617/ 326-8703  

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