as5046 austriamicrosystems, as5046 Datasheet - Page 7

• Manufacturer Part Number: as5046
• Description: Programmable 12-bit 360? Magnetic Angle Encoder With Absolute 2-wire Serial And Analog Interfaces
• Manufacturer: austriamicrosystems

AS5046 Programmable 360° Magnetic Angle Encoder – Preliminary Data Sheet
Note: 1) digital interface
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.
5.6
2-wire Serial Interface
(operating conditions: T
otherwise noted)
Revision 1.0
Parameter
Internal sampling rate for absolute
output
Internal sampling rate for absolute
output
Read-out frequency
Parameter
Data output activated (logic high)
First data shifted to output register
Start of data output
Data output valid
Data output tristate
Pulse width of CSn
Read-out frequency
Timing Characteristics
1023
512
0
0 °
amb
α
10bit code
= -40 to +125°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless
2
1
0
Symbol
f
f
CLK
Symbol
t
t
T
t
t
t
f
S,mode0
S,mode1
CLK FE
CLK
Figure 4: Integral and differential Non-Linearity (exaggerated curve)
DO
DO valid
DO tristate
CSn
CLK / 2
active
0.35°
TN
Min
2.48
2.35
9.90
9.38
>0
Min
500
500
357
500
>0
INL
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DNL+1LSB
Typ
2.61
2.61
10.42
10.42
Typ
375
180°
Actual curve
Ideal curve
Max
100
394
100
1
Max
2.74
2.87
10.94
11.46
1
512
Unit
ns
ns
ns
ns
ns
ns
MHz
Unit
kHz
kHz
MHz
Note
Time between falling edge of CSn and data output activated
Time between falling edge of CSn and first falling edge of
CLK
Rising edge of CLK shifts out one bit at a time
Time between rising edge of CLK and data output valid
After the last bit DO changes back to “tristate”
CSn = high; To initiate read-out of next angular position
Clock frequency to read out serial data
Note
T
T
T
T
Max. clock frequency to read out serial data
amb
amb
amb
amb
= 25°C, slow mode (pin MODE=0 or open)
= -40 to +125°C, slow mode (pin MODE=0 or open)
= 25°C, fast mode (pin MODE = 1)
= -40 to +125°C, : fast mode (pin MODE = 1)
360 °
1023
α
[degrees]
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