AS5030-ATST austriamicrosystems, AS5030-ATST Datasheet - Page 17

• Manufacturer Part Number: AS5030-ATST
• Description: IC ENCODER ROTARY 8-BIT 16-TSSOP
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary Encoder - Programmabler

Specifications of AS5030-ATST

• Sensing Range: 23.6mT ~ 44.5mT
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 14mA
• Current - Output (max): 4mA
• Output Type: Digital, PWM
• Features: Programmable
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 16-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AS5030-ATSTTR

AS5030
Datasheet - D e t a i l e d D e s c r i p t i o n
The minimum PWM pulse width t
1LSB = nom. 2.26µs.
The PWM pulse width increases with 1LSB per step. At the maximum angle 358.6° (Angle reading = FF
the pulse width t
This leads to a total period (t
Table 6. SSI Read-only Serial Bit Sequence (21-bit read)
This means that the PWM pulse width is (position + 1) LSB, where position is 0….255.
The tolerance of the absolute pulse width and -frequency can be eliminated by calculating the angle with the duty cycle rather than with the
absolute pulse width:
results in an 8-bit value from 00
results in a degree value from 0° ~ 358.6°
Note: The absolute frequency tolerance is eliminated by dividing t
www.austriamicrosystems.com/AS5030
Position
127
128
255
0
and T
OFF
ON
in the same way.
(PWM = high) is 256 LSB and the pause width t
PWM out
358.59°
178.59
Angle
180°
ON +
0°
5 V
0 V
H
ON
t
to FF
OFF
0
2. 26 µs
(PWM = high) is 1 LSB @ 0° (Angle reading = 00
) of 257LSB.
578 . 56 µs
H
,
angle
angle
High
128
129
256
1
[ ]
[
°
8
=
−
bit
360
256
291. 54 µs
287. 02 µs
]
128
=
287.02µs
291.54µs
578.56µs
⎡
⎢
⎣
OFF
2.26µs
t_
⎛
⎜ ⎜
⎝
Revision 2.1
⎛
⎜ ⎜
⎝
ON
257
high
257
(PWM = low) is 1 LSB.
by (t
t
ON
t
ON
ON
+T
t
t
+
OFF
ON
+
ON
t
t
OFF
), as the change of the absolute timing effects both T
H
OFF
).
578. 56 µs
Low
256
129
128
⎞
⎟ ⎟
⎠
⎞
⎟ ⎟
⎠
1
2. 26 µs
−
−
1
1
⎤
⎥
⎦
255
H
t
t
off
),
on
578.56µs
291.54µs
287.02µs
2.26µs
t_
Position
low
Duty-Cycle
0.39%
49.4%
50.2%
99.6%
17 - 44
(EQ 1)
(EQ 2)
ON