AS5043_09 Datasheet, PDF (15/37 Pages) ams AG – Programmable 360 Magnetic Angle Encoder with Absolute SSI and Analog Outputs

AS5043
Data Sheet – Programming the AS5043
Figure 13: Zero Position Programming (shown for 360° mode)
VDD5V
5V
analog
output
voltage
the output can be electrically rotated to
match a given output voltage to any
mechanical position
2V
lid ^0V
0°
90°
180°
270°
Mechanical
360° _angle
a _{12.2 Analog Mode Programming}
v _{The analog output can be configured in many ways:}
ill ^{It consists of three major building blocks,}
a digital range preselector,
a 10-bit Digital-to-Analog-Converter (DAC)
t ^{and an OP-AMP buffer stage.}
G _{s In the default configuration (all OTP bits = 0), the analog output is set for 360° operation, internal DAC reference}
(VDD5V/2), external OPAMP gain, 0-100% ratiometric to VDD5V.
A ^{t Shown below is a typical example for a 0°-360° range, 0-5V output. The complete application requires only one external}
component, a buffer capacitor at VDD3V3 and has only 3 connections VDD, VSS and Vout (connectors 1-3).
s ⁿ _{Note: the default setting for the OPAMP feedback path is:FB_intEn=0=external. The external resistors Rf and Rg must be}
e _{installed. In the programmed state (FB_intEn=1=internal), these resistors do not need to be installed as the feedback}
Technicaaml ^{cont path is internal (Rf_int and Rg_int).}
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