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Product category: Analogue and Mixed Signal ICs
News Release from: Analog Devices | Subject: AD2S1200
Edited by the Electronicstalk Editorial Team on 20 February 2004

RDC solution delivers robust performance

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The AD2S1200 is a complete monolithic resolver-to-digital convertor for variable speed control applications that require additional power

A complete monolithic resolver-to-digital convertor (RDC), the AD2S1200 equips designers with a fast accurate (up to +/-11arc-min), fully integrated, RDC solution for variable speed control applications that require additional power. Automotive applications, such as power-assisted steering systems, and industrial applications where there are large temperature variations, such as glass manufacturing, require robust, resolver-to-digital conversion to ensure stability and precise positioning of mechanical movements in harsh temperature environments.

The convertor contains a 12bit resolution tracking resolver and an onboard programmable sinusoidal oscillator that provides sine wave excitation.

Other key features include a fault-detection circuit that detects any loss of resolver signals, out-of-range input signals, input signal mismatch, or loss of position tracking.

The chip communicates via a 12bit parallel port or three-wire serial interface.

The resolver also provides an incremental encoder emulation output with 1024 pulses per revolution with additional directional pulse, eliminating the need for external A and B directional decode logic.

The device operates from a single 5V supply, with a temperature range of -40 to +125C.

The AD2S1200 is available in a 44-lead LQFP package and is priced starting at $12.00 in 1000-piece quantities.

The part is in full production, with samples now available.

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