AS5030-ATSU austriamicrosystems, AS5030-ATSU Datasheet - Page 33

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

Specifications of AS5030-ATSU

• 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

AS5030
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
8.7.2 Power Cycling Mode
The power cycling method shown in
This mode provides the least power consumption of all three modes; when the sampling interval is more than 400ms, as the current consumption
in off-mode is zero.
It also has the longest start-up time of all modes, as the chip must always perform a “cold start“ from zero, which takes about 1.9 ms.
The optional filter R1/C1 may again be added to reduce peak currents in the 5V power supply line.
Figure 26. Application Example III: Ultra-low Power Encoder
Figure 26
shows that the Low Power Mode is the best option for sampling intervals <4ms, while the Ultra Low Power Mode is the best option for sampling
intervals between 4~400ms. At sampling intervals >400ms, the power cycling mode is the best method to minimize the average current
consumption. The curves are based on the figures given in
Figure 27. Average Current Consumption of Reduced Power Modes
www.austriamicrosystems.com/AS5030
5 ,0
4 ,5
4 ,0
3 ,5
3 ,0
2 ,5
2 ,0
1 ,5
1 ,0
0 ,5
0 ,0
shows an overview of the average supply currents in the three reduced power modes, depending on the sampling interval. The graphs
1
U ltra L o w P owe r M od e
100n
Figure 26
AS5030
A S5 0 3 0 a v e ra g e c u rr e n t c o ns u m p tio n
VDD
cycles the AS5030 by switching it on and off, using an external PNP transistor high side switch.
S
VSS
I
0
on
1 0
C1 C2
N
t
on
t
Low Power Mode and Ultra Low Power Mode on page
off
CLK
CS
DIO
sam p lin g in terval [m s]
10k
Revision 2.1
Po we r C y c lin g M od e
>1µF
C1
ton
L o w Po we r Mo d e
toff
R1
on/off
1 0 0
Controller
Micro
VDD
VSS
VDD
VSS
+5V
31.
1 0 0 0
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