Knob Sensor. MA750 Datasheet

MA750 Sensor. Datasheet pdf. Equivalent

Part MA750
Description Contactless Turning Knob Sensor
Feature MagAlpha MA750 Contactless Turning Knob Sensor Key features 8 bit digital and 12 bit PWM output 50.
Manufacture MPS
Datasheet
Download MA750 Datasheet



MA750
MagAlpha
MA750
Contactless Turning Knob Sensor
Key features
8 bit digital and 12 bit PWM output
500 kHz refresh rate
7.5 mA supply current
Serial interface for data readout and settings
General Description
The MagAlpha MA750 is a robust contactless angle
encoder suitable for control buttons and knobs. The
IC detects the absolute angular position of a
permanent magnet, typically a diametrically
magnetized cylinder attached to the rotor.
QFN16 3x3mm Package
The output is digital (SPI) or PWM. For usual
potentiometer replacement, the PWM signal can be
filtered to obtain an analog signal.
Figure 1: Functional Block Diagram
Monolithic Power Systems, Inc. | Gland, Switzerland | Tel: +41 22 364 63 50 | euroinfo@monolithicpower.com | www.sensimatech.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 Monolithic Power Systems. All Rights
Reserved. MA700 Rev 1.0 September 2014
1



MA750
MA750
Contactless Turning Knob Sensor
1. Specifications
TABLE 1 OPERATING CONDITIONS
Parameters
Supply voltage
Supply current
Supply voltage for OTP flashing
Supply current for OTP flashing(1)
Operating temperature
Applied magnetic field
Symbol Min Typ Max
VDD
3.0 3.3 3.6
Isup 5.7 6.6 8.0
Vflash
3.6
3.8
Iflash
50
100
Top -40
125
B 30 75 150
(1) See section 11 for more details about the supply circuit for OTP flashing.
TABLE 2 SENSOR OUTPUT SPECIFICATIONS
Measurement conditions: VDD = 3.3 V, 50 mT < B < 100 mT, Temp = -40 .. +125°C, unless otherwise noted
Parameters
Min Typ Max Unit
Remark
Power up time
4 6 ms
INL +/- 0.7 +/- 1.5 +/-2.5 deg
Output drift
Temperature induced
Magnetic field induced
Voltage supply induced
+/-0.005
-0.005
0.0007
+/-0.008
-0.01
0.001
+/-0.05
-0.025
0.003
deg/°C
deg/mT
deg/mV
Absolute output - serial
Data output length
16
16 bit
Refresh rate
500 520 550 kHz
Latency
2 3 4 µs
Resolution (3noise level)
8
8 bit
Absolute output - PWM
Resolution (3noise level)
12
12 bit
Digital I/O
Threshold voltage High
Threshold voltage Low
Rising edge slew rate
Falling edge slew rate
1.75 V
1.05 V
0.7
V/ns
CL = 50 pF
0.7
V/ns
CL = 50 pF
Unit
V
mA
V
mA
°C
mT
Monolithic Power Systems, Inc. | Gland, Switzerland | Tel: +41 22 364 63 50 | euroinfo@monolithicpower.com | www.sensimatech.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2014 Monolithic Power Systems. All Rights
Reserved. MA700 Rev 1.0 September 2014
2





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