AS5035
Programmable 64 PPR Incremental
Magnetic Rotary Position Sensor
General Description
The AS5035 is a magnetic incremental position sensor with 64
quadrature pulses per revolution (8-bit resolution) and index
output.
Two diagnostic outputs are provided to indicate an
out-of-range condition of the magnetic field as well as
movement of the magnet in Z-axis. In addition a specific
combination of output states indicate a loss of power supply.
The AS5035 is available in a small 16pin SSOP package. It can
be operated at either 3.3V or 5V supplies.
Ordering Information
and
Content Guide
appear at end of
datasheet.
Key Benefits & Features
The benefits and features of AS5035, Programmable 64 PPR
Incremental Magnetic Rotary Position Sensor are listed below:
Figure 1:
Added Value of Using AS5035
Benefits
•
Complete system-on-chip, including analog
front end and digital signal processing, no
calibration required
Features
•
Robust system, tolerant to magnet misalignment, air
gap variations, temperature variations and external
magnetic stray fields
•
Small lead(Pb)-free package: SSOP 16
(5.3mm x 6.2mm)
•
2 quadrature A/B outputs with 64 pulses per
revolution (ppr), 256 edges per revolution,
1.4° per step
•
Index output (one pulse per revolution)
•
Accurate user programmable zero position (0.35°)
•
Failure detection mode for magnet placement
monitoring and loss of power supply
•
Magnetic sensing principle
•
Full turn (360°) contactless angular position sensor
•
Wide temperature range: -40°C to 125°C
•
2-channel quadrature and index outputs
provide an alternative to optical position
sensors
•
User programmable Zero positioning by OTP
allows easy assembly of magnet
•
Diagnostic features for operation safety
•
Ideal for applications in harsh environments
ams Datasheet
[v2-01] 2016-Sep-21
Page 1
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AS5035 −
Pin Assignment
Pin Assignment
Figure 4:
AS5035 Pin Configuration SSOP16
Pin Description
Figure 5:
Pin Description
Pin #
SSOP16
1
2
3
4
5
6
7
8
9
10
Pin Name
MagInc
MagDec
A
B
N.C.
Index
VSS
Prog
OTP_DO
OTP_CLK
Type
DO_OD
DO_OD
DO
DO
Test
DO
Supply
DI, pd
DO_T
DI, ST
Mag. Field Indicator
Mag. Field Indicator
Quadrature Channel A
Quadrature Channel B
Must be left open
Description
Incremental Index Output
Supply Ground
OTP Programming Input.
Internal pull-down resistor (~74kΩ).
Should be connected to VSS if not used
Data Output for Zero Position Programming
Clock Input for Zero Position Programming; Schmitt-Trigger
input. Should be connected to VSS if not used
Page 4
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ams Datasheet
[v2-01] 2016-Sep-21
AS5035 −
Pin Assignment
Pin #
SSOP16
11
12
13
14
15
16
Pin Name
CSn
N.C.
N.C.
N.C.
VDD3V3
VDD5V
Type
DI_ST, pu
Test
Test
Test
Supply
Supply
Description
Enable Outputs A,B,I (see
Output Current).
Connect to VSS for normal operation
Must be left open
Must be left open
Must be left open
3V Regulator Output
5V Positive Supply Input
DO_OD: Digital output, open drain
DO: Digital push/pull output
DI: Digital input
ST: Schmitt-Trigger input
pu: Internal pull-up resistor
pd: Internal pull-down resistor
Test: Pin is used for factory testing, must be left unconnected
Unused Pins
Pins # 5, 8, 12, 13 and 14 are for factory testing and must be left
unconnected
Pins# 8, 9 and 10 are used for OTP Zero Position Programming
only. In normal operation, they can be left open or connected
to VSS (pins 8 and 10 only)
ams Datasheet
[v2-01] 2016-Sep-21
Page 5
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