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KMA200

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Product data sheet

Rev. 8 — 7 December 2011

8 of 33

NXP Semiconductors

KMA200

Programmable angle sensor

Outputs of KMA200

The output of the KMA200 is either digital or analog, depending on the control word stored

in the EEPROM. The analog output consists of a standard and a programmable output

stage. The programmable output stage allows four different characteristics; mode 1,

mode 2, mode 3 or none output. The digital output has two different modes; mode 5 and

mode 6.

Analog output

In the analog output mode the measured angle value is converted linear into a value that

is ratiometric to the supply voltage VDD. This voltage is driven by the standard output

stage to pin DATA/OUT1. The same value is fed to a second output stage that is

connected to pin CLK/OUT2. This second output stage is programmable to one of four

different output characteristics; mode 1, mode 2, mode 3 or high-impedance state output.

A valid angle value is nominally mapped to an output voltage range of V(CL)l

(default = 5 %) to V(CL)u (default = 95 %) of VDD at the standard output VOUT1

(see Figure 3).

For mode 1 the valid output voltage range at pin CLK/OUT2 is identical to the output

voltage range of the standard analog voltage but the output characteristic is inverted

(see Figure 4).

In mode 2 (see Figure 5) the valid output range at pin CLK/OUT2 is nominally V(CL)l/2 to

V(CL)u/2 of VDD.

A further possibility is to program the VOUT2 (mode 3, thresh) as a comparator depending

from the angle value (see Figure 6).

When the KMA200 detects an error condition, it switches the analog outputs into

high-impedance state. The outputs are forced to lie in the upper or lower diagnostic range

by the external pull-up or pull-down resistors.

Table 5.

Setting the KMA200 output characteristics

Output characteristics

Pin assignment

Mode setting of EEPROM

(ctrl1)

Mode

Type

DATA/OUT1

CLK/OUT2

OM2

OM1

OM0

Mode 1

analog

standard

inverted

Mode 2

analog

standard

half range

Mode 3

analog

standard

comparator

Mode 4

analog

standard

high-impedance state

Mode 5

digital

serial data (SPI)

(clock)

Mode 6

digital

bit complement

serial data (SPI)

(clock)

001

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