AD637 DATASHEET PDF

The AD 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 AD 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.

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Data Sheet. High accuracy. Wide bandwidth. True rms. Mean square. Absolute value. Analog three-state operation. Quiescent current reduction from 2. The AD is a complete, high accuracy, rms-to-dc converter. AD computes the true root mean square, mean square, or. The true rms value of. The rms. Superior crest factor compensation permits measurements. The wide bandwidth of the AD permits the.

Direct dB value of the rms output with a range of 60 dB is. An externally programmed. A chip select connection on the AD permits the user to. This feature. High Precision, Wideband. Figure 1. In addition, when the AD is powered down, the. This allows several. ADs to be tied together to form a wideband true rms. The input circuitry of the AD is protected from overload.

The inputs are not. The AD is laser wafer trimmed to achieve rated performance. The only external component. The value. The on-chip buffer amplifier is used either as an input buffer or. The filter can be used to reduce. All versions are available in hermetically sealed,.

Document Feedback. Information furnished by Analog Devices is believed to be accurate and reliable. However, no. Specifications subject to change without notice. One Technology Way, P. Box , Norwood, MA , U.

Tel: All rights reserved. Technical Support. View a parametric search of comparable parts. Application Notes. Technical Books. Visit the product page to see pricing options. Submit a technical question or find your regional support. Submit feedback for this data sheet. This page is dynamically generated by Analog Devices, Inc. A dynamic change to the content on this page will not.

This dynamic page may be frequently modified. Download AD Datasheet. 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 AD 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. The wide bandwidth of the AD permits the measurement of signals up to kHz with inputs of mV rms and up to 8 MHz when the input levels are above 1 V rms.

Direct dB value of the rms output with a range of 60 dB is available on a separate pin. An externally programmed reference current allows the user to select the 0 dB reference voltage to correspond to any level between 0. A chip select connection on the AD permits the user to decrease the supply current from 2. In addition, when the AD is powered down, the output goes to a high impedance state.

This allows several ADs to be tied together to form a wideband true rms multiplexer. The input circuitry of the AD is protected from overload voltages in excess of the supply levels.

The inputs are not damaged by input signals if the supply voltages are lost. The AD is laser wafer trimmed to achieve rated performance without external trimming. The only external component required is a capacitor that sets the averaging period. The value of this capacitor also determines low frequency accuracy, ripple level, and settling time. The on-chip buffer amplifier is used either as an input buffer or in an active filter configuration.

The filter can be used to reduce the amount of ac ripple, thereby increasing accuracy. However, no responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other rights of third parties that may result from its use.

No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.

A dynamic change to the content on this page will not trigger a change to either the revision number or the content of the product data sheet.

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