AS5046 Programmable 360° Magnetic Angle Encoder – Preliminary Data Sheet

Revision 1.1

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The AS5046 is tolerant to magnet misalignment and unwanted external magnetic fields due to differential measurement

technique and Hall sensor conditioning circuitry.

It is also tolerant to airgap and temperature variations due to Sin-/Cos- signal evaluation.

7 3.3V / 5V Operation

Figure 5: Connections for 5V / 3.3V supply voltages

The AS5046 operates either at 3.3V ±10% or at 5V

±10%. This is made possible by an internal 3.3V Low-

Dropout (LDO) Voltage regulator. The core supply

voltage is always taken from the LDO output, as the

internal blocks are always operating at 3.3V.For 3.3V

operation, the LDO must be bypassed by connecting

VDD3V3 with VDD5V (see Figure 5 ).

For 5V operation, the 5V supply is connected to pin

VDD5V, while VDD3V3 (LDO output) must be buffered by

a 2.2...10µF capacitor, which should be placed close to

the supply pin (see Figure 5).

The VDD3V3 output is intended for internal use only It

should not be loaded with an external load.

The voltage levels of the digital interface I/O’s

correspond to the voltage at pin VDD5V, as the I/O

buffers are supplied from this pin (see Figure 5).

A buffer capacitor of 100nF is recommended in both

cases close to pin VDD5V. Note that pin VDD3V3 must

always be buffered by a capacitor. It must not be left

floating, as this may cause an instable internal 3.3V

supply voltage which may lead to larger than normal jitter

of the measured angle.

LDO

I

N

T

E

R

F

A

C

E

2µ2...10µF

100n

4.5 - 5.5V

DO

Prog

CLK

MODE

VDD3V3

VSS

VDD5V

5V Operation

Internal

VDD

CSn

LDO

100n

3.0 - 3.6V

VDD3V3

VSS

VDD5V

3.3V Operation

Internal

VDD

I

N

T

E

R

F

A

C

E

DO

Prog

CLK

MODE

CSn