AS5045 12-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER

Revision 1.5

www.austriamicrosystems.com

Page 3 of 24

3

Electrical Characteristics

3.1

AS5045 Differences to AS5040

All parameters are according to AS5040 datasheet except for the parameters shown below:

Building Block

AS5045

AS5040

Resolution

12bits, 0.088°/step.

10bit, 0.35°/step

Data length

read: 18bits

(12bits data + 6 bits status)

OTP write: 18 bits

(12bits zero position + 6 bits mode selection)

read: 16bits

(10bits data + 6 bits status)

OTP write: 16 bits

(10bits zero position + 6 bits mode

selection)

incremental encoder

Not used

Pin 3: not used

Pin 4:not used

quadrature, step/direction and BLDC

motor commutation modes

Pin 3:incremental output A_LSB_U

Pin 4:incremental output B_DIR_V

Pins 1 and 2

MagINCn, MagDECn: same feature as AS5040,

additional OTP option for red-yellow-green

magnetic range

MagINCn, MagDECn indicate in-range

or out-of-range magnetic field plus

movement of magnet in z-axis

Pin 6

MODE pin, switch between fast and slow mode

Pin 6:Index output

Pin 12

PWM output: frequency selectable by OTP:

1µs / step, 4096 steps per revolution, f=244Hz

2µs/ step, 4096 steps per revolution, f=122Hz

PWM output:

1µs / step, 1024 steps per revolution,

976Hz PWM frequency

sampling frequency

selectable by MODE input pin:

2.5kHz, 10kHz

fixed at 10kHz @10bit resolution

Propagation delay

384µs (slow mode)

96µs (fast mode)

48µs

Transition noise

(rms; 1sigma)

0.03 degrees max. (slow mode)

0.06 degrees max. (fast mode)

0.12 degrees

OTP programming

options

zero position, rotational direction, PWM disable,

2 Magnetic Field indicator modes, 2 PWM

frequencies

zero position, rotational direction,

incremental modes, index bit width

3.2

Absolute Maximum Ratings (non operating)

Stresses beyond those listed under “Absolute Maximum Ratings“ may cause permanent damage to the device. These are stress ratings

only. Functional operation of the device at these or any other conditions beyond those indicated under “Operating Conditions” is not

implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Parameter

Symbol

Min

Max

Unit

Note

DC supply voltage at pin VDD5V

VDD5V

-0.3

7

V

DC supply voltage at pin VDD3V3

VDD3V3

5

V

Input pin voltage

-0.3

VDD5V +0.3

V

Except VDD3V3

Input current (latchup immunity)

-100

100

mA

Norm: JEDEC 78

Electrostatic discharge

ESD

± 2

kV

Norm: MIL 883 E method 3015

Storage temperature

-55

125

°C

Min – 67°F ; Max +257°F

Body temperature (Lead-free

package)

260

°C

t=20 to 40s, Norm: IPC/JEDEC J-Std-020C

Lead finish 100% Sn “matte tin”

Humidity non-condensing

H

5

85

%