AS5046ASSU austriamicrosystems, AS5046ASSU Datasheet - Page 16

• Manufacturer Part Number: AS5046ASSU
• Description: IC, MAGNETIC ROTARY ENCODER 12BIT SSOP16
• Manufacturer: austriamicrosystems
• Type: Magnetic Rotary Encoderr

Specifications of AS5046ASSU

• Ic Function: Encoder IC
• Supply Voltage Range: 3V To 3.6V, 4.5V To 5.5V
• Operating Temperature Range: -40°C To +125°C
• Digital Ic Case Style: SSOP
• No. Of Pins: 16
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS5046 Programmable 360° Magnetic Angle Encoder – Preliminary Data Sheet
9.7
The AS5046 provides several options of detecting movement and distance of the magnet in the vertical (Z-) direction. Signal
indicators MagINC, MagDEC and LIN are available as status bits in the serial data stream, while MagRngn is an open-drain
output that indicates an out-of range status (on in YELLOW or RED range). Additionally, the analog output provides a safety
feature in the form that it will be turned off when the magnetic field is too strong or too weak (RED range).
The serial data is always available, the red/yellow/green status is indicated by the status bits as shown below:
10 Mode Input Pin
The absolute angular position is sampled at a rate of 10.4kHz (t=96µs) in fast mode and at a rate of 2.6kHz (t=384µs) in
slow mode.
These modes are selected by pin MODE (#2). The mode input pin activates or deactivates an internal filter, which is used to
reduce the digital jitter and consequently the analog output noise.
Activating the filter by pulling Mode = LOW or leaving it open reduces the transition noise to <0.03° rms. At the same time,
the sampling rate is reduced to 2.6kHz and the signal propagation delay is increased to 384µs. This mode is recommended
for high precision, low speed and ≤360° applications.
Deactivating the filter by setting Mode = HIGH increases the sampling rate to 10.4kHz and reduces the signal propagation
delay to 96µs. The transition noise will increase to <0.06° rms. This mode is recommended for higher speed and full scale =
360° applications.
Revision 1.1
Parameter
Input Field tolerance level red2yellow B1 - B2
Input Field tolerance level yellow2green B3 - B4
Input Field tolerance level green2yellow B5 - B6
Input Field tolerance level yellow2red B7 – B8
Input Field tolerance level red2yellow B1 - B2
Input Field tolerance level yellow2green B3 - B4
Input Field tolerance level green2yellow B5 - B6
Input Field tolerance level yellow2red B7 – B8
Status Bits
Mag
INC
0
0
1
1
1
Z-Axis Range Indication (Push Button Feature, Red/Yellow/Green Indicator
Mag
DEC
0
1
0
1
1
LIN
0
0
0
0
1
Hardware Pins
Mag
Rngn
Off
Off
Off
On
On
enabled
enabled
Analog
output
enabled
enabled
disabled
No distance change
Magnetic Input Field OK (GREEN range, ~45…75mT)
Distance increase, GREEN range; Pull-function. This state is dynamic and only active while the magnet is
moving away from the chip.
Distance decrease, GREEN range; Push- function. This state is dynamic and only active while the magnet is
moving towards the chip.
YELLOW Range: Magnetic field is ~ 25…45mT or ~75…135mT. The AS5046 may still be operated in this
range, but with slightly reduced accuracy.
RED Range: Magnetic field is ~<25mT or >~135mT. The analog output will be turned off in this range by
default. It can be enabled permanently by OTP programming (see 11.1.2).
It is still possible to use the absolute serial interface in the red range, but not recommended.
B
B
B
B
B
B
B
B
Symbol
Table 7: Magnetic field strength indicators
r2y25
y2g25
g2y25
y2r25
r2y
y2g
g2y
y2r
www.austriamicrosystems.com
16.77
33.01
60.0
90.45
15.64
30.80
55.96
84.39
Min
17.95
35.35
64.24
96.87
17.95
35.35
64.24
96.87
Typ
Description
19.33
38.06
69.15
104.28
22.37
44.05
80.04
120.69
Max
mT
mT
mT
mT
mT
mT
mT
mT
Unit
Note
At 25°C ambient
temperature
Over the full
specified
temperature range
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