AS5043 Programmable 360° Magnetic Angle Encoder

Revision 1.4, 04-Apr-06

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Page 24 of 26

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.

19.6 Timing Characteristics

Synchronous Serial Interface (SSI)

otherwise 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

375

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

Read-out frequency

>0

1

MHz

Clock frequency to read out serial data

19.7 Programming Conditions

otherwise noted)

P

S

M

M

U

N

Programming enable time

2

µs

Time between rising edge at Prog

pin and rising edge of CSn

Write data start

2

µs

Write data valid

250

ns

Write data at the rising edge of

Load programming data

3

µs

0

µs

0

5

µs

250

kHz

CLK pulse width

1.8

2

2.2

µs

During programming; 16 clock cycles

Hold

time

of

Vprog

after

programming

finished

2

µs

Programmed data is available after

next power-on

Programming voltage

7.3

7.4

7.5

V

Must be switched off after zapping

Programming voltage off level

0

1

V

Line must be discharged to this level

Programming current

130

mA

During programming

Analog read CLK

100

kHz

Analog readback mode

Programmed zener voltage (log.1)

100

mV

Unprogrammed zener voltage (log. 0)

1

V

mode (see 13)