5秒后页面跳转
AD636KDZ PDF预览

AD636KDZ

更新时间: 2024-11-07 12:52:31
品牌 Logo 应用领域
亚德诺 - ADI 转换器模拟特殊功能转换器
页数 文件大小 规格书
16页 444K
描述
Low Level, True RMS-to-DC Converter

AD636KDZ 数据手册

 浏览型号AD636KDZ的Datasheet PDF文件第2页浏览型号AD636KDZ的Datasheet PDF文件第3页浏览型号AD636KDZ的Datasheet PDF文件第4页浏览型号AD636KDZ的Datasheet PDF文件第5页浏览型号AD636KDZ的Datasheet PDF文件第6页浏览型号AD636KDZ的Datasheet PDF文件第7页 
Low Level, True RMS-to-DC Converter  
AD636  
Data Sheet  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
True rms-to-dc conversion  
200 mV full scale  
ABSOLUTE  
VALUE  
V
IN  
Laser-trimmed to high accuracy  
0.5% maximum error (AD636K)  
1.0% maximum error (AD636J)  
Wide response capability  
dB  
SQUARER  
DIVIDER  
COM  
C
AV  
+V  
S
+V  
S
Computes rms of ac and dc signals  
1 MHz, −3 dB bandwidth: V rms > 100 mV  
Signal crest factor of 6 for 0.5% error  
dB output with 50 dB range  
Low power: 800 μA quiescent current  
Single or dual supply operation  
Monolithic integrated circuit  
Low cost  
CURRENT  
MIRROR  
10k  
R
L
+V  
S
I
OUT  
BUFFER IN  
BUF  
10kΩ  
BUFFER OUT  
40kΩ  
AD636  
GENERAL DESCRIPTION  
–V  
S
The AD636 is a low power monolithic IC that performs true  
rms-to-dc conversion on low level signals. It offers performance  
that is comparable or superior to that of hybrid and modular  
converters costing much more. The AD636 is specified for a  
signal range of 0 mV to 200 mV rms. Crest factors up to 6 can  
be accommodated with less than 0.5% additional error, allowing  
accurate measurement of complex input waveforms.  
–V  
S
Figure 1.  
The AD636 is available in two accuracy grades. The total error of the  
J-version is typically less than ±0.5 mV ± ±.0% of reading, while  
the total error of the AD636K is less than ±0.2 mV to ±0.5% of  
reading. Both versions are temperature rated for operation  
between 0°C and 70°C and available in ±4-lead SBDIP and ±0-lead  
TO-±00 metal can.  
The low power supply current requirement of the AD636,  
typically 800 μA, is ideal for battery-powered portable  
The AD636 computes the true root-mean-square of a complex ac  
(or ac plus dc) input signal and gives an equivalent dc output level.  
The true rms value of a waveform is a more useful quantity than  
the average rectified value because it is a measure of the power  
in the signal. The rms value of an ac-coupled signal is also its  
standard deviation.  
instruments. It operates from a wide range of dual and single  
power supplies, from ±2.5 V to ±±6.5 V or from +5 V to +24 V.  
The input and output terminals are fully protected; the input  
signal can exceed the power supply with no damage to the device  
(allowing the presence of input signals in the absence of supply  
voltage), and the output buffer amplifier is short-circuit protected.  
The AD636 includes an auxiliary dB output derived from an  
internal circuit point that represents the logarithm of the rms  
output. The 0 dB reference level is set by an externally supplied  
current and can be selected to correspond to any input level from  
0 dBm (774.6 mV) to −20 dBm (77.46 mV). Frequency response  
ranges from ±.2 MHz at 0 dBm to greater than ±0 kHz at −50 dBm.  
The 200 mV full-scale range of the AD636 is compatible with  
many popular display-oriented ADCs. The low power supply  
current requirement permits use in battery-powered hand-held  
instruments. An averaging capacitor is the only external  
component required to perform measurements to the fully  
specified accuracy is. Its value optimizes the trade-off between  
low frequency accuracy, ripple, and settling time.  
The AD636 is easy to use. The device is factory-trimmed at the  
wafer level for input and output offset, positive and negative  
waveform symmetry (dc reversal error), and full-scale accuracy  
at 200 mV rms. Therefore, no external trims are required to  
achieve full-rated accuracy.  
An optional on-chip amplifier acts as a buffer for the input or the  
output signals. Used in the input, it provides accurate  
performance from standard ±0 MΩ input attenuators. As an  
output buffer, it sources up to 5 mA.  
Rev. E  
Document Feedback  
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  
Technical Support  
©2013 Analog Devices, Inc. All rights reserved.  
www.analog.com  
 
 
 

AD636KDZ 替代型号

型号 品牌 替代类型 描述 数据表
AD536AJQ ADI

类似代替

Integrated Circuit True RMS-to-DC Converter
AD737JRZ ADI

功能相似

Low Cost, Low Power, True RMS-to-DC Converter
AD736JRZ ADI

功能相似

Low Cost, Low Power, True RMS-to-DC Converter

与AD636KDZ相关器件

型号 品牌 获取价格 描述 数据表
AD636KH ADI

获取价格

Low Level, True RMS-to-DC Converter
AD636KHZ ADI

获取价格

Low Level, True RMS-to-DC Converter
AD636KN ETC

获取价格

RMS-to-DC Converter
AD636KQ ETC

获取价格

RMS-to-DC Converter
AD637 ADI

获取价格

High Precision, Wide-Band RMS-to-DC Converter
AD637A ADI

获取价格

High Precision, Wide-Band RMS-to-DC Converter
AD637AQ ADI

获取价格

High Precision, Wide-Band RMS-to-DC Converter
AD637AR ADI

获取价格

High Precision, Wide-Band RMS-to-DC Converter
AD637ARBR ADI

获取价格

RMS TO DC CONVERTER, 0.15MHz, PDSO16
AD637ARZ ADI

获取价格

High Precision, Wideband RMS-to-DC Converter