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AS5043 10-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
Adapter PCB Operation Manual

2 General Description

The AS5043 is a system-on-chip, combining
integrated Hall elements, analog front end and
digital signal processing in a single device. It
provides incremental output signals and the
absolute angular position of a magnet that is placed
either above or below the device.
The AS5043 can be configured to specific customer
requirements by programming the integrated OTP
(one time programmable) register. An internal
voltage regulator allows the AS5043 to operate at
either 3.3 V or 5 V supplies.
Figure 2: Typical arrangement AS5043 and magnet

3 Pin Configuration

Figure 3: Pin configuration SSOP16
Revision A.02, 04. Jul 06

4 Pin Description

P
i
n
S
P
i
n
S
1
MagRngn
2
Mode
3
CSn
4
CLK
5
NC
6
DO
7
VSS
8
Prog_DI
9
DACref
10
DACout
11
FB
12
Vout
13
NC
14
NC
15
VDD3V3
16
VDD5V
www.austriamicrosystems.com
y
m
b
o
l
T
y
p
e
D
e
s
c
r
i
p
t
i
y
m
b
o
l
T
y
p
e
D
e
s
c
r
i
p
t
i
Magnet Field Magnitude RaNGe warning;
active low, indicates that the magnetic
DO_OD
field strength is outside of the
recommended limits.
Mode input. Select between low noise
DI_PD,
(open, low) and high speed (high) mode.
ST
Internal pull-down resistor
DI_PU,
Chip Select, active low; Schmitt-Trigger
ST
input, internal pull-up resistor (~50kΩ)
Clock Input of Synchronous Serial
DI,ST
Interface; Schmitt-Trigger input
-
must be left unconnected
Data Output of Synchronous Serial
DO_T
Interface
S
Negative Supply Voltage (GND)
OTP Programming Input and Data Input
for Daisy Chain mode. Internal pull-down
DI_PD
resistor (~74kΩ).
Should be connected to VSS if not used
DAC Reference voltage input for external
AI
reference
AO
DAC output (unbuffered, Ri ~8kΩ)
AI
Feedback, OPAMP inverting input
AO
OPAMP output
-
Must be left unconnected
-
Must be left unconnected
3V-Regulator Output for internal core,
regulated from VDD5V.Connect to
S
VDD5V for 3V supply voltage. Do not
load externally.
S
Positive Supply Voltage, 3.0 to 5.5 V
Table 1: Pin description SSOP16
o
n
o
n
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