AS5045TR View Datasheet(PDF) - austriamicrosystems AG
Part Name
Description
MFG CO.
'AS5045TR' PDF : 34 Pages View PDF
AS5045
Data Sheet
8 Mode Input Pin
The mode input pin activates or deactivates an internal filter that is used to reduce the analog output noise.
Activating the filter (Mode pin = LOW) provides a reduced output noise of 0.03° rms. At the same time, the output
delay is increased to 384µs. This mode is recommended for high precision, low speed applications.
Deactivating the filter (Mode pin = HIGH) reduces the output delay to 96µs and provides an output noise of 0.06°
rms. This mode is recommended for higher speed applications.
The MODE pin should be set at power-up. A change of the mode during operation is not allowed.
lid Switching the Mode pin affects the following parameters:
Table 2. Slow and Fast Mode Parameters 12-bit Absolute Angular Position Output
a Parameter
v Sampling rate
Transition noise (1 sigma)
ill Output delay
Max. speed @ 4096 samples/rev.
t Max. speed @ 1024 samples/rev.
G s Max. speed @ 256 samples/rev.
Max. speed @ 64 samples/rev.
Slow Mode (Mode = low)
2.61 kHz (384 µs)
≤ 0.03° rms
384µs
38 rpm
153 rpm
610 rpm
2441 rpm
Fast Mode (Mode = high, VDD5V)
10.42 kHz (96µs)
≤ 0.06° rms
96µs
153 rpm
610 rpm
2441 rpm
9766 rpm
s A ent 8.1 Synchronous Serial Interface (SSI)
m t Figure 5. Synchronous Serial Interface with Absolute Angular Position Data
a n CSn
o tCLK FE
TCLK/2
1
8
c CLK
tCLK FE
tCSn
18
1
l DO
D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
OCF COF
LIN
Mag Mag
INC DEC
Even
PAR
D11
a tDO active
tDO valid
Angular Position Data
Status Bits
tDO Tristate
nic If CSn changes to logic low, Data Out (DO) will change from high impedance (tri-state) to logic high and the read-out
will be initiated.
h After a minimum time tCLK FE, data is latched into the output shift register with the first falling edge of CLK.
Each subsequent rising CLK edge shifts out one bit of data.
c The serial word contains 18 bits, the first 12 bits are the angular information D[11:0], the subsequent 6 bits
econtain system information, about the validity of data such as OCF, COF, LIN, Parity and Magnetic Field status
T(increase/decrease).
A subsequent measurement is initiated by a “high” pulse at CSn with a minimum duration of tCSn.
www.austriamicrosystems.com
Revision 1.7
13 – 33
Share Link: 
