AD637SD/883B集成电路（IC）的RMS至DC转换器规格书PDF中文资料

AD637SD/883B属于集成电路（IC）的RMS至DC转换器。由亚德诺半导体技术有限公司制造生产的AD637SD/883BRMS 至 DC 转换器RMS 至 DC 转换器产品族中的产品可用于执行测量时变波形的数学功能，并返回一个与等效稳态 (DC) 值成比例的值，如果将其应用于电阻负载，则会产生相同的功率耗散。这些转换器通常用于交流电源相关应用中的测量，它们之间以及它们与用于类似终端的其他技术之间的区别在于输入为非正弦波形时所给出结果的准确性。

GENERAL DESCRIPTION

The AD637 is a complete, high accuracy, rms-to-dc converter that computes the true rms value of any complex waveform. It offers performance that is unprecedented in integrated circuit rms-to-dc converters and comparable to discrete and modular techniques in accuracy, bandwidth, and dynamic range. The AD637 computes the true root mean square, mean square, or absolute value of any complex ac (or ac plus dc) input waveform and gives an equivalent dc output voltage. The true rms value of a waveform is more useful than an average rectified signal because it relates directly to the power of the signal. The rms value of a statistical signal relates to the standard deviation of the signal.

FEATURES

High accuracy

0.02 maximum nonlinearity, 0 V to 2 V rms input

0.1 additional error to crest factor of 3

Wide bandwidth

8 MHz at 2 V rms input

600 kHz at 100 mV rms

Computes

True rms

Square

Mean square

Absolute value

dB output (60 dB range)

Chip select/power-down feature allows

Analog three-state operation

Quiescent current reduction from 2.2 mA to 350 µA