KMA36 universal magnetic encoder

KMT36 Rev 4

www.meas-spec.com

2012-july

4/16

 System parameters

Symbol

Parameter

Condition

Min.

Typ.

Max.

Unit

Update rate

1) 2)

24

720

Hz

Starting time

5

ms

Resolution

3)

13

Bit

Linearity error

3)

±0.3

±1

°

Hysteresis error

3)

±0.1

±0.25

°

Brown-out reset voltage

2.7

V

Brown-out reset pulse width

2

µs

Applied magnetic field

15

25

60

kA/m

Internal coil resistance

75

100

150

Ω

PWM output resolution

10

bit

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)

SYSTEM OUTPUT

The system has two possible hardware output configurations: two-wire interface or analog output.

 Analog Output

The system has a Pulse Width Modulation unit with 10 bit resolution which can be easily coupled with a first

order low-pass filter

this hardware configuration, all internal registers are loaded with initial values. No digital configuration is

necessary, all available configurations can be set by changing the hardware setup

The KMA36 has an I

Semiconductors) with an 8-bit data bus which can be easily used to retrieve measurement and configuration

information. (Please refer to the two-wire interface section for details)

Update rate

SPD Bit

const

0

1

1

2