EMS22P_14 Datasheet, PDF (2/5 Pages) Bourns Electronic Solutions – Non-Contacting PWM Encoder

Applications
■ Material handling equipment
■ Brushless DC motor commutation
■ Robotics
■ Automotive
■ Industrial automation
■ Petroleum refinery
■ Medical
■ Office equipment
■ 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.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.