as5130 austriamicrosystems, as5130 Datasheet - Page 29
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as5130
Manufacturer Part Number
as5130
Description
8-bit Contactless Magnetic Rotary Encoder For Accurate Angular Measurement Over A Full Turn Of 360?
Manufacturer
austriamicrosystems
Datasheet
1.AS5130.pdf
(41 pages)
- Current page: 29 of 41
- Download datasheet (3Mb)
AS5130
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
Figure 23. 3-Wire Angle Sensor
Application Example III: Low-power encoder
Via SSI, the AS5130 will be able to toggle between active mode and low power mode. In active mode, the current
consumption is ~15mA and in sleep mode 2mA. The fastest possible startup time from low power mode is 150µs. The
AS5130 can be periodically switched between active and low power mode, the average power consumption depends
on the duty cycle. In order to read out the correct data, the active mode time must be larger than 150µs.
Figure 24. Low Power Encoder
Example: sampling period = one measurement every 10ms.
System constants = I
www.austriamicrosystems.com
active
= 15mA, I
100n
I
100n
avg
power_down
=
AS5130
AS5130
15mA ∗ 150μs
------------------------------------------------------------------------- -
I
avg
AS5130
AS5130
AS5130
S
V
V
V
=
DD
SS
S
DD
V
150μs
SS
I
-------------------------------------------------------------------- -
active
= 2 mA, t
N
PROG
N
DCLK
∗ t
CAO
+
DIO
+
CS
Revision 1.00
on
9 85ms
2mA ∗ 9 85ms
,
t
on
+
off
CS
CLK
DIO
I
CAO
PWM
+
powerdown
= 9,85ms, t
t
off
,
LED1
1k
∗ t
= 2.195mA
off
on
on/off
(min) = 150µs (start-up from low power mode):
controller
micro
V
V
DD
SS
PWM out
+5V
V
SS
AV
V
+5V
SS
DD
29 - 41
(EQ 8)
(EQ 9)
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