KMA36 datasheet(5/18 Pages) TEC

Numer części	KMA36

Szczegółowy opis	Contactless Absolute 360째 (180째) angle measurement

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Producent	TEC [TE Connectivity Ltd]

Strona internetowa	http://www.te.com/usa-en/home.html

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KMA36

Contactless Rotational and Linear Encoder

SENSOR SOLUTIONS /// KMA36 Rev 11

4/2016

Page 5



System parameters

Symbol

Parameter

Condition

Min.

Typ.

Max.

Unit

fdata

Update rate1) 2)

24

720

Hz

tstart

Starting time MCU

5

ms

tstart

Starting time PWM output

20

ms

αrd

Resolution digital

H0=25 kA/m, I2C

mode 3)

13 5)

15

Bit

αra

Resolution analog

H0=25 kA/m, PWM

mode 3)

10

Bit

Δα

Accuracy 4)

H0=25 kA/m 3)

Top=25°C, I2C

mode,

Oversampling=32

±0.3

±1

°

ΔαH

Hysteresis error (Repeatability) 4)

H0=25 kA/m 3)

Top=25°C, I2C

mode,

Oversampling=32

±0.1

±0.25

°

Vbwn

Brown-out reset voltage

2.7

V

tbwn

Brown-out reset pulse width

2

µs

Hy

Applied magnetic field

PWR-Bit = 0

15

25

60

kA/m

RCOIL

Internal coil resistance

75

100

150

Ω

ICOIL

Internal coil current

H0=25 kA/m

15

20

40

mA

fPWM

PWM frequency

7.8

kHz

Table 4:

System parameters

1) Maximum is measured in speed mode with minimum oversampling. Minimum is measured with maximum oversampling.

2) When using the analog-output configuration then update rate is fixed at 88Hz

3) System parameters apply only for recommended measurement setup (please refer to the arrangement section)

4) Hysteresis and accuracy are depending nearly inversely proportional on the magnetic field strength.

The accuracy is defined as the max. angular difference between actual field angle and measured angle.

The hysteresis is defined as angular difference between left and right turn

5)

Using higher resolutions than 13 Bit may cause “missing bits” / increased linearity error.

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