Datasheet > 转换器 > 模拟特殊功能转换器> AD736JR-REEL7

AD736JR-REEL7

更新时间： 2024-02-03 03:40:58

品牌	Logo	应用领域
亚德诺 - ADI		转换器光电二极管
页数	文件大小	规格书
20页	480K
描述
Low Cost, Low Power, True RMS-to-DC Converter

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技术参数
数据手册
替代型号

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AD736JR-REEL7 技术参数

Source Url Status Check Date：	2013-05-01 14:56:17.736	是否无铅：	含铅
是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	MS-012AA, SOIC-8
针数：	8	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.05	Is Samacsys：	N
转换器类型：	RMS TO DC CONVERTER	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e0	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）：	240
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：	Tin/Lead (Sn85Pb15)	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 mm	Base Number Matches：	1

AD736JR-REEL7 数据手册

AD736

Data Sheet

THEORY OF OPERATION

AC COUPLED

10µF

C =

COUPLED

FULL-WAVE

RECTIFIER

AD736

COM

8kΩ

0.1µF

OUTPUT

AMPLIFIER

VIN

+V_S

INPUT

AMPLIFIER

I_B<10pA

8kΩ

OUTPUT

BIAS

SECTION

RMS

TRANSLINEAR

CORE

−VS

CAV

0.1µF

CAV

TO COM PIN

C_F

(OPTIONAL LPF)

Figure 18. AD736 True RMS Circuit

As shown by Figure 18, the AD736 has five functional

subsections: the input amplifier, full-wave rectifier (FWR), rms

core, output amplifier, and bias section. The FET input amplifier

allows both a high impedance, buffered input (Pin 2) and a

low impedance, wide dynamic range input (Pin 1). The high

impedance input, with its low input bias current, is well suited

for use with high impedance input attenuators.

TYPES OF AC MEASUREMENT

The AD736 is capable of measuring ac signals by operating as

either an average responding converter or a true rms-to-dc

converter. As its name implies, an average responding converter

computes the average absolute value of an ac (or ac and dc)

voltage or current by full-wave rectifying and low-pass filtering

the input signal; this approximates the average. The resulting

output, a dc average level, is scaled by adding (or reducing)

gain; this scale factor converts the dc average reading to an rms

equivalent value for the waveform being measured. For example,

the average absolute value of a sine wave voltage is 0.636 times

The output of the input amplifier drives a full-wave precision

rectifier that, in turn, drives the rms core. The essential rms

operations of squaring, averaging, and square rooting are

performed in the core using an external averaging capacitor,

_AV. Without C_AV, the rectified input signal travels through the

_PEAK; the corresponding rms value is 0.707 × V_PEAK. Therefore, for

core unprocessed, as is done with the average responding

connection (see Figure 19).

sine wave voltages, the required scale factor is 1.11 (0.707/0.636).

In contrast to measuring the average value, true rms measurement

is a universal language among waveforms, allowing the magnitudes

of all types of voltage (or current) waveforms to be compared to

one another and to dc. RMS is a direct measure of the power or

heating value of an ac voltage compared to that of a dc voltage;

an ac signal of 1 V rms produces the same amount of heat in a

resistor as a 1 V dc signal.

A final subsection, an output amplifier, buffers the output from

the core and allows optional low-pass filtering to be performed

via the external capacitor, C_F, which is connected across the

feedback path of the amplifier. In the average responding

connection, this is where all of the averaging is carried out.

In the rms circuit, this additional filtering stage helps reduce any

output ripple that was not removed by the averaging capacitor, C_AV.

Rev. I | Page 10 of 20

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AD736JR-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
AD736JNZ	ADI	完全替代	Low Cost, Low Power, True RMS-to-DC Converter
AD736JRZ	ADI	完全替代	Low Cost, Low Power, True RMS-to-DC Converter
AD736JRZ-R7	ADI	完全替代	Low Cost, Low Power, True RMS-to-DC Converter

与AD736JR-REEL7相关器件

型号	品牌	获取价格	描述	数据表
AD736JR-REEL-7	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736JRZ	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736JRZ-R7	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736JRZ-RL	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KN	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KNZ	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KR	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KR-REEL	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KR-REEL-7	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter
AD736KRZ	ADI	获取价格	Low Cost, Low Power, True RMS-to-DC Converter

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