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EMS22P Datasheet, PDF (2/4 Pages) Bourns Electronic Solutions – Non-Contacting PWM Encoder | |||
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Applications
â Material handling equipment
â Brushless DC motor commutation
â Robotics
â Automotive
â Industrial automation
â Petroleum reï¬nery
â Medical
â Ofï¬ce equipment
â Audio and broadcast equipment
EMS22P - Non-Contacting PWM Encoder
Output Type Waveform and Variant Table
PWM Output
Angle
PW MIN
Parameter
PWM frequency
MIN pulse with
MAX pulse with
Symbol
fPWM
PWMIN
PWMAX
Type
0.9756
1
1024
Unit
Note
KHz Signal period: 1025 μs
μs Position 0 Angle 0 °
μs Position 1023 Angle 359.65 °
0 deg
(Pos 0)
1
PW MAX
1025
Analog output using an external low pass filter
Vcc
t on
t off
0
512
1025
0V
0°
PWM
Recommended Filter
R1
R2
360 °
359.65 deg
(Pos 1023)
analog out
1/f PWM
Position = t on * 1025/(t on + t off) - 1
C1
C2
VSS
Simple Passive 2nd Order Low Pass Filter
R1, R2 ⥠4.7K Ohms
C1, C2 ⥠1 μF / 6 V
R1 should be ⥠4.7K ohms to avoid loading of the PWM output.
Larger values of Rx and Cx will provide better filtering and less
ripple, but will also slow down the response time.
Speciï¬cations are subject to change without notice.
Customers should verify actual device performance in their speciï¬c applications.
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