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AD536ASCHIPS

更新时间： 2024-02-24 13:31:27

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	152K
描述
Integrated Circuit True RMS-to-DC Converter

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技术参数
数据手册

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AD536ASCHIPS 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
Reach Compliance Code：	not_compliant	风险等级：	5.92
转换器类型：	RMS TO DC CONVERTER	JESD-30 代码：	R-XDIP-T14
JESD-609代码：	e0	端子数量：	14
最高工作温度：	125 °C	最低工作温度：	-55 °C
封装主体材料：	CERAMIC	封装代码：	DIP
封装等效代码：	DIP14,.3	封装形状：	RECTANGULAR
封装形式：	IN-LINE	电源：	5/36/+-3/+-18 V
子类别：	Analog Special Function Converters	最大压摆率：	2 mA
表面贴装：	NO	技术：	BIPOLAR
温度等级：	MILITARY	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL	Base Number Matches：	1

AD536ASCHIPS 数据手册

AD536A

FREQUENCY RESPONSE

The AD536A utilizes a logarithmic circuit in performing the

implicit rms computation. As with any log circuit, bandwidth is

proportional to signal level. The solid lines in the graph below

represent the frequency response of the AD536A at input levels

from 10 millivolts to 7 volts rms. The dashed lines indicate the

upper frequency limits for 1%, 10%, and 3 dB of reading addi-

tional error. For example, note that a 1 volt rms signal will pro-

duce less than 1% of reading additional error up to 120 kHz. A

10 millivolt signal can be measured with 1% of reading addi-

tional error (100 µV) up to only 5 kHz.

Figure 12. Error vs. Crest Factor

Figure 11. High Frequency Response

AC MEASUREMENT ACCURACY AND CREST FACTOR

Crest factor is often overlooked in determining the accuracy of

an ac measurement. Crest factor is defined as the ratio of the

peak signal amplitude to the rms value of the signal (CF = V_P/

V rms). Most common waveforms, such as sine and triangle

waves, have relatively low crest factors (<2). Waveforms which

resemble low duty cycle pulse trains, such as those occurring in

switching power supplies and SCR circuits, have high crest

factors. For example, a rectangular pulse train with a 1% duty

Figure 13. AD536A Error vs. Pulsewidth Rectangular

Pulse

cycle has a crest factor of 10 (CF = 1

Figure 12 is a curve of reading error for the AD536A for a 1 volt

rms input signal with crest factors from 1 to 11. A rectangular

pulse train (pulsewidth 100 µs) was used for this test since it is

the worst-case waveform for rms measurement (all the energy is

contained in the peaks). The duty cycle and peak amplitude

were varied to produce crest factors from 1 to 11 while main-

taining a constant 1 volt rms input amplitude.

Figure 14. AD536A Input and Output Voltage Ranges

vs. Supply

REV. B

–7–

1...4 5 678

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