Product category:
Analogue and Mixed Signal ICs
News Release from: austriamicrosystems | Subject: AS5305
Edited by the Electronicstalk Editorial
Team on 27 November 2007
Linear encoder IC shrinks sensor
conditioning
Magnetic linear motion encoder IC is a complete system-on-a-chip, combining Hall elements and a signal processor on one silicon chip.
New from austriamicrosystems, the AS5305 is a magnetic linear motion encoder IC aimed at linear motion and off-axis rotational measurements in applications such as industrial drives, x-y stages or electric motors An automotive version, the AS5305A, for applications such as throttle, cam and crankshaft position sensing as well as for high resolution motor control will be available in the first half of 2008
This article was originally published on Electronicstalk on 5 Feb 2008 at 8.00am (UK)
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The AS5305 is a complete system-on-a-chip, combining Hall elements and a signal processor on one silicon chip.
The device provides linear position measurement via a single-track or double-track multipole magnetic strip sliding over the IC.
Using a cost-effective single-track magnetic strip, incremental measurement with a resolution as small as 14um per position step can be obtained.
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The AS5305 supports magnetic strips with pole-pair dimensions between 2.26 and 5.91mm.
An absolute linear displacement can be obtained by operating the AS5305 in conjunction with a double-track magnetic strip.
The IC reads index information from the second magnetic strip, which represents a reference position within the mechanical displacement.
"The AS5305 linear encoder is designed for use in a wide range of applications in the industrial, automotive, medical and consumer markets", says Matjaz Novak, Marketing Director Industry and Medical at austriamicrosystems.
"The AS5305 allows module manufacturers to significantly reduce their product size in form factor critical applications".
"For example, the combination of form factor, high reliability and high resolution makes the AS5305 particularly attractive for portable medical devices".
The AS5305 can also be used as an off-axis device for rotational measurements, in conjunction with a multipole magnetic ring.
When used with a 32 pole-pair magnetic ring, for example, the AS5305 is able to provide a resolution of 5120 positions per revolution.
The device can operate at speeds of up to 9375rev/min with an integrated field strength indicator acting as an additional safety feature.
The AS5305 linear encoder IC adds to austriamicrosystems' highly successful family of magnetic rotary encoders.
Like all austriamicrosystems magnetic rotary encoder ICs, the AS5305 is insensitive to external magnetic stray fields.
The AS5305 is available now in a lead-free TSSOP20 package.
The device operates at 5V supply and is specified for -40 to +125C ambient temperature.
The automotive version AS5305A will be fully qualified to AEC-Q100 and specified for ambient temperatures up to +150C.
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