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AS5311

Datasheet - E le c t r i ca l C h a ra c t e r is t i c s

6.4 Electrical System Specifications

Notes:

1. Integral Non-Linearity (INL) is the maximum deviation between actual position and indicated position.

2. Differential Non-Linearity (DNL) is the maximum deviation of the step length from one position to the next.

3. Transition Noise (TN) is the repeatability of an indicated position.

Table 9. Electrical System Specifications

Symbol

Parameter

Note

Min

Typ

Max

Units

Resolution, absolute outputs

0.488 um/step (12bit / 2mm pole pair)

12

bit /

polepair

Resolution, incremental outputs

1.95 um/step (10bit / 2mm pole pair)

10

bit /

polepair

Integral non-linearity (optimum)

Maximum error with respect to the best line

fit. Ideal magnet

± 5.6

μm

Integral non-linearity (over

temperature)

Maximum error with respect to the best line

fit. Ideal magnet

± 10

μm

DNL

Differential non-linearity

10bit, no missing codes

± 0.97

μm

TN

Transition noise

1 sigma

0.6

μm RMS

Power-on reset thresholds:

On voltage; 300mV typ. hysteresis

DC supply voltage 3.3V (VDD3V3)

1.37

2.2

2.9

V

Power-on reset thresholds:

Off voltage; 300mV typ. hysteresis

1.08

1.9

2.6

Power-up time

Until status bit OCF = 1

20

ms

System propagation delay absolute

output

Delay of ADC, DSP and absolute interface

96

µs

System propagation delay incremental

output

Including interpolation delay at high speeds

384

µs

Internal sampling rate for absolute

output

9.90

10.42

10.94

kHz

9.38

10.42

11.46

Hyst

Hysteresis, incremental outputs

No Hysteresis at absolute serial outputs

2

LSB

CLK

Read-out frequency

Maximum clock frequency to read out serial

data

1MHz