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PDF AS5601 Data sheet ( Hoja de datos )
| Número de pieza | AS5601 | |
| Descripción | 12-bit Programmable Contactless Encoder | |
| Fabricantes | ams | |
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AS5601
12-bit Programmable Contactless
Encoder
General Description
The AS5601 is an easy-to-program magnetic rotary position
sensor with incremental quadrature (A/B) and 12-bit digital
outputs. Additionally, the PUSH output indicates fast airgap
changes between the AS5601 and magnet which can be used
to implement a contactless pushbutton function in which the
knob can be pressed to move the magnet toward the AS5601.
This AS5601 is designed for contactless encoder applications,
and its robust design rejects the influence of any homogenous
external stray magnetic fields.
Based on planar Hall sensor technology, this device measures
the orthogonal component of the flux density (Bz) from an
external magnet.
The industry-standard I²C interface supports user
programming of non-volatile parameters in the AS5601 without
requiring a dedicated programmer.
The AS5601 also provides a smart low-power mode which
automatically reduces power consumption
Ordering Information and Content Guide appear at end of
datasheet.
Figure 1:
Added Value of using AS5601
Key Benefits & Features
The benefits and features of AS5601, 12-bit Programmable
Contactless Encoder are listed below:
Benefits
Features
Highest reliability and durability
Contactless angle measurement insensitive to dust and dirt
Simple programming
Simple user-programmable zero position and device
configuration
Flexible choice of the number of A/B pulses
per revolution
Quadrature output configurable from 8 up to 2048 positions
Contactless pushbutton functionality
Pushbutton output by detecting sudden airgap changes
Low power consumption
Automatic entry into low-power mode
Easy setup
Automatic magnet detection
Small form factor
SOIC-8 package
Robust environmental tolerance
Wide temperature range: -40°C to +125°C
ams Datasheet
[v1-02] 2014-Oct-29
Page 1
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1 page  
AS5601 − Electrical Characteristics
Electrical Characteristics
All limits are guaranteed. The parameters with min and max
values are guaranteed with production tests or SQC (Statistical
Quality Control) methods.
Operating Conditions
Figure 6:
System Electrical Characteristics and Temperature Range
Symbol
Parameter
Conditions
Min Typ Max Units
VDD5V
Positive supply voltage in
5.0V mode
5.0V operation mode
During OTP burn procedure(2)
4.5
5.0
5.5
V
VDD3V3
Positive supply voltage in
3.3V mode
3.3V operation mode
During OTP burn procedure(2)
3.0
3.3
3.3
3.4
3.6
3.5
V
V
IDD Supply current in NOM (1) PM = 00 Always on
6.5 mA
lDD_LPM1
Supply current in LPM1 (1)
PM = 01
Polling time = 5 ms
3.4 mA
lDD_ LPM2
Supply current in LPM2 (1)
PM = 10
Polling time = 20 ms
1.8 mA
lDD_ LPM3
Supply current in LPM3 (1)
PM = 11
Polling time = 100 ms
1.5 mA
IDD_BURN
Supply current per bit for
burn procedure
Initial peak, 1 μs
Steady burning, <30 μs
100 mA
40 mA
TA Operating temperature
TP
Programming
temperature
-40 +125 °C
20 30 °C
Note(s) and/or Footnote(s):
1. For typical magnetic field (60 mT) excluding current delivered to the external load and tolerance on polling times.
2. For OTP burn procedure the supply line source resistance should not exceed 1Ohm.
ams Datasheet
[v1-02] 2014-Oct-29
Page 5
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5 Page 
AS5601 − Detailed Description
Figure 13:
I²C Electrical Specifications
I²C Electrical Specification
Symbol
VIL
VIH
VHYS
VOL
IOL
tOF
tSP
II
CB
CI/O
Parameter
Conditions Min Max
Logic low input voltage
-0.3 0.3 x VDD
Logic high input voltage
0.7 x VDD VDD + 0.3
Hysteresis of Schmitt
trigger inputs
VDD > 2.5V
0.05 x VDD
Logic low output voltage
(open-drain or
open-collector) at 3 mA
sink current
VDD > 2.5V
0.4
Logic low output current VOL = 0.4V
20
Output fall time from
VIHmax to VILmax
10 120 (1)
Pulse width of spikes that
must be suppressed by
the input filter
50 (2)
Input current at each I/O
Pin
Input voltage
between 0.1 x VDD
and 0.9 x VDD
-10
+10 (3)
Total capacitive load for
each bus line
550
I/O capacitance (SDA,
SCL) (4)
10
Units
V
V
V
V
mA
ns
ns
μA
pF
pF
Note(s) and/or Footnote(s):
1. In Fast-mode Plus, fall time is specified the same for both output stage and bus timing. If series resistors are used this has to be
considered for bus timing.
2. Input filters on the SDA and SCL inputs suppress noise spikes of less than 50 ns.
3. I/O pins of Fast-mode and Fast-mode Plus devices must not load or drive the SDA and SCL lines if VDD is switched OFF.
4. Special-purpose devices such as multiplexers and switches may exceed this capacitance because they connect multiple paths
together.
ams Datasheet
[v1-02] 2014-Oct-29
Page 11
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11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AS5601.PDF ] | |
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