MLX91204 Datasheet, PDF (7/11 Pages) Melexis Microelectronic Systems – 360 Degrees Hi-Speed Rotary Position Sensor

MLX91204
360 Degrees Hi-Speed Rotary Position Sensor
(Sine/Cosine)
8 Application Diagram
8.1 Single Ended Mode
The output voltages X = (X_OUT – GND) and Y = (Y_OUT – GND) are within 0.5V to 4.5V with an
offset of 2.5V (VDD/2)
For reliable operation within the specifications the sensor must be connected as follows:
+5V
100 nF*
3
MLX91204
Vdd
2 _PC
X_Out ⁵
7 _PV
Y_Out ⁴
6 _PD
CO_Out ¹
8 _GND
1 nF
1 nF
CH1
CH2
uC
A
D
1 nF
GND GND
GND
GND
GND
GND
* if the supply voltage is disturbed by EMI it can be useful to place a second capacitor (100 pF
ceramic) parallel to the 100nF capacitor.
8.2 Differential Mode
The output voltages X = (X_OUT – CO_OUT) and Y = (Y_OUT – CO_OUT) are within ±2 V around
“virtual ground” (i.e. CO_OUT = 2.5V = VDD/2)
For reliable operation within the specifications the sensor must be connected as follows:
+5V
100 nF*
3
MLX91204
Vdd
2 _PC
X_Out ⁵
7 _PV
CO_Out 1
6 _PD
Y_Out 4
8 _GND
1 nF
1 nF
uC
CH1+
CH1-
A
CH2+
1 nF
CH2-
D
GND GND
GND
GND
GND
GND
* if the supply voltage is disturbed by EMI it can be useful to place a second capacitor (100pF
ceramic) parallel to the 100 nF capacitor.
3901091204
Rev 003
Page 7 of 11
Data Sheet
16/Jan/12