AS5043

Data Sheet – Programming the AS5043

www.austriamicrosystems.com

Revision 1.80

15 – 36

Figure 14: Analog Output Block Diagram

AS5043

Range

Selector

OR1

OR0

ClampMdEN

0 360° 0

0 180° 1

1 90° 0

1 45° 1

10bit

digital

REF_extEN

0=int

DACref

VDD5V

+

-

0 - 100% VDD5V /2

LDO

3.3V

VDD3V3

916

15

DACout

10

VOUT

12

Rf_int

30k

Rg_int

30k

10bit

analog

FB

11

FB_intEN

1=int

Gain = 2x (int)

<100pF

360°angle

0

Vout

VDD

DAC

1=ext

0=ext

0= 0-100% * Vref (def.)

1= 10-90% * Vref

VDD5V / 2

Vref

VDD

VSS

1-10µF

7

PROG

DO

CLK

CSn

for OTP

programming and

alignment mode

only. Leave open

or connect to VSS

if not used

Digital serial

interface, 10bit/360°.

Leave open if not

used. CSn and CLK

may also be tied to

VSS if not used

34

6

8

MagRngn

Mode

Magnetic field range alarm. Active

low. Leave open or connect to

VSS if not used

Mode pin.

Default = open

(low noise)

OP-Amp feedback pin.

Leave open if not used.

DAC output pin.

Leave open if not used

External DAC reference pin.

Leave open or connect to

VSS if not used

NC

13

Test pins.

Leave open

NC

5

NC

14

2

1

Connect pins 15 and

16 for VDD= 3.0-3.6V.

Do NOT connect for

VDD = 4.5-5.5V !

from

DSP

1

2

3

RLmin

= 4k7

Vout

VSS

Rf

Rg

12.2.1 Angular Range Selector

The Angular Range selector allows a digital pre-selection of the angular range. The AS5043 can be configured for a full

scale angular range of 45°, 90°, 180° or 360°. In addition, the Output voltage versus angle response can be fine-tuned by

setting the gain of the OP-AMP with external resistors and the maximum output voltage can be set in the DAC.

The combination of these options allows to configure the operation range of the AS5043 for all angles up to 360° and

output voltages up to 5.5V.

The response curve for the analog output is linear for the selected range (45°/90°/180°/360°). In addition, the slope is

mirrored at 180° for 45°- and 90°- modes and has a step response at 270° for the 180°-mode. This allows the AS5043 to

output change when the mechanical angle is rotated beyond the selected analog range. In 360°-mode, a jitter between