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AS5116

Application Information

Datasheet

• PUBLIC

DS000686

• v4-00 • 2022-Feb-18

34

│ 23

9.2

Single Ended Mode

In single-ended configuration, all voltage measurements are reverenced to VSS level. For safety

reasons, it is recommended to check as well the levels of CM_SIN and CM_COS with separate analog

inputs. The measured common mode voltages should be used to calculate the differential sine/cosine

values. Otherwise, the signal common mode level has to be determined in the controller based on one

sine/cosine period. To improve the angle accuracy, a one-time end of line calibration of offset and gain

error is recommended before calculating the angle position.

9.2.1

Minimum Wiring Diagram

Figure 29:

AS5116 Minimum Wiring Diagram, Single Ended Output Mode

(1)

C1=C2=C3=C3=C4=Cout

(2)

Parameters for Cout and Rpu are described in chapter “Electrical Characteristics”

9.2.2

Output Amplitude Calculation

The output amplitude of sine and cosine signals are directly proportional to the selected GAIN setting

and the Bz-Field of the available target magnet. Following equations explain how the calculation is

done based on a typical example. Using that approach, a very convenient estimation of the output

amplitudes is possible.

Controller Unit

CM_SIN

VSS

VDD5

SINP

VDD3

UART

AS5116

C4

C3

C2

C1

C5

C6

CM_COS

COSP

SINP

UART

VDD5

4.5 – 5.5 V

GND

in/out

Angle

Calcualation

100 nF

1 µF

ADC IN1

ADC IN2

ADC IN3

ADC IN4

GND

Recommended

CM_SIN

COSP

CM_COS

Rpu