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Numéro de sérieAS5306
CategorieSensors => Hall Effect Sensors
DescriptionIntegrated Hall ICs For Linear And Off Axis Rotary Motion Detection
The AS5306 is a single-chip IC with integrated Hall elements for measuring linear or rotary motion using multi-pole magnetic strips or rings. This allows the usage of the AS5306 in applications where the Sensor IC cannot be mounted at the end of a rotating device (e.g. at hollow shafts). Instead, the AS5306 is mounted off axis underneath a multi-pole magnetized ring or strip and provides a quadrature incremental output with 40 pulses per pole period at speeds of up to 12 meters/sec. A single index pulse is generated once for every pole pair at the index output.
SociétéAustria Mikro Systeme International AG
DatasheetTélécharger AS5306 datasheet
 
 
  • Description courte
  • AS5304/AS5306 Integrated Hall IC for linear and off-axis rotary motion detection
    / AS5306 Integrated Hall ICs for Linear and Off-Axis Rotary Motion Detection

    Complete system-on-chip High reliability due to non-contact sensing Suitable for the use in harsh environments Robust against external magnetic stray fields

    The AS5304/AS5306 are single-chip IC's with integrated Hall elements for measuring linear or rotary motion using multi-pole magnetic strips or rings. This allows the usage of the AS5304/AS5306 in applications where the Sensor IC cannot be mounted at the end of a rotating device (e.g. at hollow shafts). Instead, the AS5304/AS5306 are mounted off-axis underneath a multipole magnetized ring or strip and provides a quadrature incremental output with 40 pulses per pole period at speeds to 20 meters/sec or 12 meters/sec (AS5306). An single index pulse is generated once for every pole pair at the Index output. Using, for example, a 32pole-pair magnetic ring, the AS5304/AS5306 can provide a resolution of 1280 pulses/rev, which is equivalent to 5120 positions/rev or 12.3bit. The maximum speed at this configuration is 9375 rpm. The pole pair length 4mm (2mm north pole / 2mm south pole) for the AS5304, and 2.4mm (1.2mm north pole / 1.2mm south pole) for the AS5306. The chip accepts a magnetic field strength down to 5mT (peak). Both chips are available with push-pull outputs (AS530xA) or with open drain outputs (AS530xB). The AS5304/AS5306 are available in a small 20-pin TSSOP package and specified for an operating ambient temperature to +125°C.

    High speed, 12m/s (AS5306) Magnetic pole pair length: 2.4mm (AS5306) Resolution: (AS5306) 40 pulses / 160 positions per magnetic period. 1 index pulse per pole pair Linear movement magnetic strips measurement using multi-pole

    Circular off-axis movement measurement using multipole magnetic rings to 5.5V operating voltage Magnetic field strength indicator, magnetic field alarm for end-of-strip or missing magnet

    Applications

    The AS5304/AS5306 is ideal for high speed linear motion and off-axis rotation measurement in applications such as· electrical motors X-Y-stages rotation knobs industrial drives

    Figure AS5304 (AS5306) with multi-pole ring magnet. Revision 1.4

    Figure AS5306 (AS5304) with magnetic multi-pole strip magnet for linear motion measurement Page of 13

    The AS5304/AS5306 require a multi-pole magnetic strip or ring with a pole length 2mm (4mm pole pair length) on the AS5304, and a pole length 1.2mm (2.4mm pole pair length) on the AS5306. The magnetic field strength of the multi-pole magnet should be in the range 60mT at the chip surface. The Hall elements on the AS5304/AS5306 are arranged in a linear array. By moving the multi-pole magnet over the Hall array, a sinusoidal signal (SIN) is generated internally. With proper configuration of the Hall elements, a second 90° phase shifted sinusoidal signal (COS) is obtained. Using an interpolation circuit, the length of a pole pair is divided into 160 positions and further decoded into 40 quadrature pulses. An Automatic Gain Control provides a large dynamic input range of the magnetic field. An Analog output pin (AO) provides an analog voltage that changes with the strength of the magnetic field (see chapter 8).

    VSS A VDDP B TEST AO VDD Index TEST TEST_GND VDDA Hall ZPZmskdis S AIO DO_OD

    Supply ground Incremental quadrature position output A. Short circuit current limitation Peripheral supply pin, connect to VDD Incremental quadrature position output B. Short Circuit Current Limitation test pins, must be left open AGC Analogue Output. (Used to detect low magnetic field strength) Positive supply pin Index output, active HIGH. Short Circuit Current Limitation test pins, must be left open test pin, must be connected to VSS Hall Bias Supply Support (connected to VDD) Test input, connect to VSS during operation

    supply pin AO analogue output analog input / output DI digital input digital output push pull or open drain (programmable)

    20 Lead Thin Shrink Small Outline Package ­ TSSOP20