AS5046-ASSU austriamicrosystems, AS5046-ASSU Datasheet - Page 22

• 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
12 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.
The MODE pin must be connected to GND or VDD5V depending on the wanted operation mode. Changing the level
of the MODE pin during operation is not allowed.
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.
Switching the MODE pin affects the following parameters:
Table 21 Mode Pin Settings
Pin MODE should be fixed at power-up. A mode change during operation is not recommended.
13 Parallel Mode
The Parallel Mode allows connection of up to 8 AS5046’s in parallel on the SCL and SDA line, maintaining just two
wires for data transmission. This mode is accomplished by connecting all the SDA and SCL inputs/outputs in parallel.
Each AS5046 device can be programmed one address ranging from 0…7 (see Table 14)
Figure 10
www.austriamicrosystems.com
Sampling rate
Transition noise (1 sigma)
Propagation delay
Startup time
Parameter
Parallel Connection of up to 8 Devices
µC
SDA
SCL
(Pin MODE = 0 or open)
2.61 kHz (383µs)
SDA
≤ 0.03° rms
Slow Mode
AS5046
1
Addr. 000
st
384µs
20ms
Device
SCL
CSn
Revision 1.12
SDA
AS5046
2
Addr. 001
nd
10.42 kHz (95.9µs)
Device
(Pin MODE = 1)
≤ 0.06° rms
Fast Mode
SCL
CSn
80ms
96µs
SDA
AS5046
8
Addr. 111
th
Device
SCL
CSn
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