AS5046-ASSU austriamicrosystems, AS5046-ASSU Datasheet - Page 20

• Manufacturer Part Number: AS5046-ASSU
• Description: IC ENCODER PROG 12-BIT 16-SSOP
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary Encoder - Programmabler

Specifications of AS5046-ASSU

• Sensing Range: 45mT ~ 75mT
• Voltage - Supply: 3 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Current - Supply: 21mA
• Current - Output (max): 4mA
• Output Type: Analog, Ratiometric
• Features: Programmable
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS5046
Data Sheet
If the magnetic field strength is further increased above a magnitude value of 32, LIN will be cleared. The AGC will
remain at 255 until the magnitude has reached a value of 63 (yellow range; level B3/B4). The angular data can still be
used in the yellow range, but the noise (=jitter) will be larger than normal.
Once the magnitude is strong enough to reach a value of 63, the AGC will regulate the internal loop gain to maintain
this value. Magnitude will remain at 63 and the AGC will regulate between 0 and 255 (green range; magnetic field
strength between level B3/B4 and B5/B6). This is the recommended operating range.
If the magnetic field strength rises further than B5/B4, the AGC can no longer regulate the loop and will be at its
minimum value of 0. The magnitude value will increase (yellow range; up to B7/B8). In this range, the angular data will
still be valid. Due to the rather strong field, there is no issue with noise, but the magnetic field may be more distorted
than in the normal operating range which may lead to additional errors.
Above level B7/B8 the LIN alarm will be set once the magnitude has exceeded a level of 95 (red range). It is not
recommended to operate in this range. The main contributing part for errors will be a more distorted magnetic field.
If the magnitude exceeds a value of 127, the COF (cordic overflow) alarm will be set. This case can only occur with
very strong magnets and does usually not occur in practice. The angular data will be invalid when the COF bit is set.
Figure 9 Magnitude and AGC Values vs. Magnetic Field Strength
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