AS5130-ASSU austriamicrosystems, AS5130-ASSU Datasheet - Page 23

• Manufacturer Part Number: AS5130-ASSU
• Description: IC ENCODER ROTARY 8-BIT 16-SSOP
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary Encoder - Programmabler

Specifications of AS5130-ASSU

• Sensing Range: 32mT ~ 75mT
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 24mA
• 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
• Current - Output (max): -

AS5130
Data Sheet - D e t a i l e d D e s c r i p t i o n
If the AS5130 is cycled between active and reduced current mode, a substantial reduction of the average supply current can be achieved. The
minimum dwelling time in active mode is the wake-up time. The actual active time depends on how much the magnet has moved while the
AS5130 was in reduced power mode. The angle data is valid, when the status bit LOCK has been set
measured, the AS5130 can be put back to reduced power mode. The average power consumption can be calculated as:
Where:
I
I
I
t
t
Reducing Power Supply Peak Currents.
the AS5130 is toggled between active and reduced power mode. Rx must be chosen such that it can maintain a V
all conditions, especially during long active periods when the charge on Cx has expired. Cx should be chosen such that it can support peak
currents during the active operation period. For long active periods, Cx should be large and Rx should be small.
7.8.2 Power Cycling Mode
The power cycling method shown in
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 2ms (Compare with
Figure 17. Power Cycling Mode
The optional filter Rx/Cx may again be added to reduce peak currents in the 5V power supply line
on page
www.austriamicrosystems.com/AS5130
avg
active
power_down
on
off
= Time period during which the chip is operated in active mode
= Time period during which the chip is in reduced power mode
= Average current consumption
= Current consumption in active mode
23).
= Current consumption in reduced power mode
I
avg
100n
Figure 17
=
I
-------------------------------------------------------------------- -
active
AS5130
AS5130
cycles the AS5130 by switching it on and off, using an external PNP transistor high side switch.
∗ t
An optional RC-filter (Rx/Cx) may be added to avoid peak currents in the power supply line when
S
V
on
Low Power Mode on page
V
SS
DD
t
on
+
I
I
on
0
N
+
C1
powerdown
t
off
t
on
t
off
Revision 1.11
∗ t
10k
CS
DIO
DCLK
off
Rx
sampling interval = t
22).
>µF
Cx
t
on
t
off
on/off
controller
on
micro
V
V
(see Reducing Power Supply Peak Currents
DD
+ t
SS
(see Table
off
V
V
+5V
DD
SS
9). Once a valid angle has been
DD
voltage of 4.5 – 5.5V under
(EQ 7)
23 - 41