AS5040

Data Sheet

www.austriamicrosystems.com

Revision 2.10

7 - 33

Parameter

Symbol

Min

Typ

Max

Unit

Note

System propagation delay

incremental output

192

µs

Calculation over two samples

9.90

10.42

10.94

Sampling rate for absolute

output

9.38

10.42

11.46

kHz

+125°C

Read-out frequency

CLK

1

MHz

Max. clock frequency to read out

serial data

Figure 3: Integral and Differential Non-linearity Example (exaggerated curve)

180°

360 °

0 °

0

512

1023

α

0

1

2

0.35°

INL

Ideal curve

Actual curve

TN

512

1023

DNL+1LSB

[degrees]

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

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

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

Timing Characteristics

Synchronous Serial Interface (SSI)

noted)

Parameter

Symbol

Min

Typ

Max

Unit

Note

Data output activated

(logic high)

100

ns

Time between falling edge of CSn and

data output activated

First data shifted to output

register

500

ns

Time between falling edge of CSn and

first falling edge of CLK

Start of data output

500

ns

Rising edge of CLK shifts out one bit at a

time

Data output valid

357

413

ns

Time between rising edge of CLK and

data output valid

Data output tristate

100

ns

After the last bit DO changes back to

“tristate”

Pulse width of CSn

500

ns

CSn = high; To initiate read-out of next

angular position