as5140 austriamicrosystems, as5140 Datasheet - Page 23

• Manufacturer Part Number: as5140
• Description: 10-bit 360? Programmable Magnetic Rotary Encoder For High Ambient Temperatures Up To 150?c
• Manufacturer: austriamicrosystems

AS5140H 10-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
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.
16.8 Timing Characteristics
Synchronous Serial Interface (SSI)
(operating conditions: T
Pulse Width Modulation Output
(operating conditions: T
Incremental Outputs
(operating conditions: T
Revision 1.1, 02-03-2007
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
Parameter
PWM frequency
Minimum pulse width
Maximum pulse width
Parameter
Incremental outputs valid after
power-up
Directional indication valid
am b
am b
am b
= -40 to +150°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless otherwise noted)
= -40 to +150°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless otherwise noted)
= -40 to +150°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless otherwise noted)
t
Symbol
Symbol
Symbol
t
outputs valid
t
PW
T
t
PW
Incremental
t
t
DO tristate
DO active
f
CLK FE
DO valid
t
Dir valid
f
CLK / 2
CLK
PWM
CSn
MAX
MIN
0.927 0.976
0.878 0.976
Min
Min
0.95
Min
500
500
357
500
973
>0
1024
Typ
Typ
Typ
375
1
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1.024
1.074
Max
Max
1075
Max
1.05
100
394
100
500
500
1
Unit
Unit
Unit
MHz
KHz
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
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
Signal period = 1025µs ±5% at T
=1025µs ±10% at T
Position 0d; angle 0 degree
Position 1023d; angle 359.65 degree
Note
Time between first falling edge of CSn after power-up
and valid incremental outputs
Time between rising or falling edge of LSB output and
valid directional indication
amb
= -40 to +150°C
amb
= 25°C
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