Agilent Targets Industrial Automation with Quadrature Decoder ICs

9/16/2003 - Agilent Technologies Inc. (NYSE: A) introduced a series of integrated circuits (ICs) that perform quadrature decoder, counter and bus interface functions. These devices are specifically designed to meet the stringent performance requirements of industrial automation equipment.

The Agilent ICs are specified for operation from -40 C to +100 C, compared to -25 C to +80 C for competing products. True 33 MHz operation provides compatibility with a greater variety of encoders operating at higher speeds, and the 32-bit counter provides faster data transfer, often eliminating the need for additional system memory registers.

The primary application for the Agilent HCTL-2022 and HCTL-2032 CMOS quadrature decoder/counter ICs is to interface quadrature incremental encoders to a system's microprocessor. Encoders measure position, direction and speed of a motor or positioner. The new ICs also interface digital potentiometers to a data input bus in machine controllers. They can improve the overall performance of digital closed-loop motion control systems by providing all the necessary quadrature decoder functions, reducing the time-intensive calculations in the machine controller itself.

The HCTL-2022 and HCTL-2032 incorporate quadrature decoder logic, a binary up/down state counter and an 8-bit bus interface. The use of Schmitt-triggered CMOS inputs and input noise filters ensures reliable operation in electrically noisy factory environments. Both ICs contain a 32-bit counter and provide LSTTL- (low power Schottky transistor-transistor logic) compatible tri-state output buffers for compatibility with most controller circuits.

The Agilent HCTL-2032 provides dual-axis capability (interfacing to two single-axis encoders) and index channel support, and can be programmed for 4x/2x/1x count mode (selectable resolution). The Agilent HCTL-2022 supports a single-axis encoder and fixed 4x count mode but does not provide decoder output or cascade signals (to support external counter ICs).

The HCTL-2032 is supplied in a 32-pin PDIP (plastic dual inline package), and the HCTL-2032-SC in a 32-pin SOIC (surface-mount IC package). The HCTL-2022 is supplied in a 20-pin PDIP package.

U.S. Pricing and Availability
Agilent's HCTL-2032 quadrature decoder IC is priced at $17.60 each in quantities of 1,000 to 1,499 and is immediately available through Agilent's direct sales channel and worldwide distribution partners. Samples of the surface-mount HCTL-2032-SC and HCTL-2022 are available, with production volumes expected in January 2004.

Further information on Agilent's motion control products is available at

About Agilent Technologies
Agilent Technologies Inc. (NYSE: A) is a global technology leader in communications, electronics, life sciences and chemical analysis. The company's 30,000 employees serve customers in more than 110 countries. Agilent had net revenue of $6 billion in fiscal year 2002. Information about Agilent is available on the Web at

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