Document Feedback

AS5116

Functional Description

Datasheet

• PUBLIC

DS000686

• v4-00 • 2022-Feb-18

34

│ 11

6

Functional Description

The Hall-based magnetic position sensor, uses an array of planar sensors that convert the magnetic

field component Bz perpendicular to the surface of the chip into a voltage. The signals coming from

the Hall sensors are amplified, filtered and buffered before the information is available as sine and

cosine voltages on the output. Gain respectively sensitivity of the complete signal path, can be defined

by programming the Gain_Code in CONFIG2 register. The sensor is as well programmable to provide

a full differential or single ended signal on the output.

Settings are in system programmable through an UART single wire interface. For achieving a high

ASIL in the application, the sensor is fully supporting the ISO26262 implementation process (Detailed

information on request).

6.1

IC Power Management

The AS5116 can be either powered from a 5.0 V supply using the on-chip low-dropout regulator (LDO)

or from a 3.3 V voltage supply. The LDO (low-dropout) regulator is not intended to power any other

loads, and it needs a 1

μF capacitor to ground located close for decoupling as shown Figure 8.

In 3V3 operation, VDD and VREG tied together.

Figure 8:

Pin Configuration in 5 V Operation Mode

Figure 9:

Pin Configuration in 3V3 Operation Mode

SINN

VSS

VDD5

SINP

VDD3

UART

COSN

COSP

AS5116

LDO

4.5 – 5.5 V

100 nF

1 µF

SINN

VSS

VDD5

SINP

VDD3

UART

COSN

COSP

AS5116

LDO

3.0 – 3.6 V

100 nF