PRODUCT DESCRIPTION

The AD637 is a complete high accuracy monolithic 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. A crest factor compensation scheme in the AD637 permits measurements of signals with crest factors of up to 10 with less than 1 additional error. The circuit’s wide bandwidth permits the measurement of signals up to 600 kHz with inputs of 200 mV rms and up to 8 MHz when the input levels are above 1 V rms.

FEATURES

High Accuracy

0.02 Max Nonlinearity, 0 V to 2 V RMS Input

0.10 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 “3-State” Operation

Quiescent Current Reduction from 2.2 mA to 350 μA

Side-Brazed DIP, Low Cost Cerdip and SOIC

AD637B屬于集成電路（IC） > RMS 至 DC 轉(zhuǎn)換器。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD637BRMS 至 DC 轉(zhuǎn)換器RMS 至 DC 轉(zhuǎn)換器產(chǎn)品族中的產(chǎn)品可用于執(zhí)行測量時變波形的數(shù)學(xué)功能，并返回一個與等效穩(wěn)態(tài) (DC) 值成比例的值，如果將其應(yīng)用于電阻負載，則會產(chǎn)生相同的功率耗散。這些轉(zhuǎn)換器通常用于交流電源相關(guān)應(yīng)用中的測量，它們之間以及它們與用于類似終端的其他技術(shù)之間的區(qū)別在于輸入為非正弦波形時所給出結(jié)果的準(zhǔn)確性。