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PDF KMA210 Data sheet ( Hoja de datos )
| Número de pieza | KMA210 | |
| Descripción | Programmable angle sensor | |
| Fabricantes | NXP Semiconductors | |
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KMA210
Programmable angle sensor
Rev. 2 — 7 December 2011
Product data sheet
1. Product profile
1.1 General description
The KMA210 is a magnetic angle sensor module. The MagnetoResistive (MR) sensor
bridges, the mixed signal Integrated Circuit (IC) and the required capacitances are
integrated into a single package.
This angular measurement module KMA210 is pre-programmed, pre-calibrated and
therefore, ready to use.
The KMA210 allows user-specific adjustments of angular range, zero angle and clamping
voltages. The settings are stored permanently in a non-volatile memory.
1.2 Features and benefits
High precision sensor for magnetic
High temperature range up to 160 C
angular measurement
Single package sensor module with
Ratiometric analog output voltage
integrated filters for improved
ElectroMagnetic Compatibility (EMC)
Automotive qualified in accordance with Overvoltage protection up to 16 V
AEC-Q100 Rev-G
Programmable user adjustments,
Programming via One-Wire Interface
including zero angle and angular range (OWI)
Fail-safe non-volatile memory with write User-programmable 32-bit identifier
protection using lock bit
Independent from magnetic field
Magnet-loss, power-loss and broken
strength above 35 kA/m
bond wire detection
Ready to use without external
Factory calibrated
components
1 page  
NXP Semiconductors
KMA210
Programmable angle sensor
α
Hext
001aan665
Fig 2. Angular measurement directions
Since the Anisotropic MR (AMR) effect is periodic over 180, the sensor output is also
180-periodic, where the angle is calculated relative to a freely programmable zero angle.
The dashed line indicates the mechanical zero degree position.
6. Analog output
The KMA210 provides one analog output signal on pin OUT/DATA. The measured angle
is converted linearly into a value, which is ratiometric to the supply voltage VDD. Either a
positive or a negative slope is provided for this purpose.
Table 3 describes the analog output behavior for a positive slope. If for example,
a magnetic field angle, above the programmed maximum angle max, but below the clamp
switch angle sw(CL) is applied to the sensor, then analog output is set to the upper
clamping voltage. If the magnetic field angle is larger than the clamp switch angle, the
analog output switches from upper to lower clamping voltage. In the case of a negative
slope, the clamping voltages are changed.
Table 3. Analog output behavior for a positive slope
Magnetic field angle
Analog output
max < < sw(CL)
sw(CL) < < ref + 180
V(CL)u
V(CL)l
The analog output voltage range encodes both angular and diagnostic information. A valid
angle value is between the upper and lower clamping voltage. If the analog output is in the
diagnostic range, that is below 4 %VDD or above 96 %VDD, an error condition has been
detected. The analog output repeats every 180.
KMA210
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 7 December 2011
© NXP B.V. 2011. All rights reserved.
5 of 37
5 Page 
NXP Semiconductors
KMA210
Programmable angle sensor
Table 12. Module performance …continued
Characteristics are valid for the operating conditions, as specified in Section 9.
Symbol Parameter
Conditions
Min
ang
angular error
temperature range
40 C to +160 C
[4][7] 1.35
[10]
temperature range
40 C to +140 C
[4][7] 1.1
[10]
mang
slope of angular error
[4][7] -
[10]
ZO(pl)
power-loss output
impedance
impedance to remaining
supply line in case of lost
supply voltage or lost ground
-
Typ
-
-
-
-
[1] At a nominal output voltage between 5 %VDD and 95 %VDD and a maximum angle of max = 180.
[2] In steps of resolution < 0.022.
[3] Activation is dependent on the programmed diagnostic mode.
[4] At a low-pass filtered analog output with a cut-off frequency of 0.7 kHz.
[5] Settling to these values is limited by 0.7 kHz low-pass filtering of analog output.
[6] In steps of 0.02 %VDD.
[7] Definition of errors is given in Section 12.
[8] Based on a 3 standard deviation.
[9] Room temperature is given for an ambient temperature of 25 C.
[10] Graph of angular error is shown in Figure 5.
Max
+1.35
+1.1
0.04
210
Unit
deg
deg
deg/deg
1.40
1.35
|Δφang|
(deg)
1.10
0.75
0.65
(1)
(2)
0
−20
−16 −12.25
−1 0 1
(1) 40 C to +160 C
(2) 40 C to +140 C
Fig 5. Envelope curve for the magnitude of angular error
12.25
16 20
α1 − α0 (deg)
001aal765
KMA210
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 7 December 2011
© NXP B.V. 2011. All rights reserved.
11 of 37
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet KMA210.PDF ] | |
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